diff --git a/.cursor/skills/today-dashboard/SKILL.md b/.cursor/skills/today-dashboard/SKILL.md
index 8d5cbd1..9f3e541 100644
--- a/.cursor/skills/today-dashboard/SKILL.md
+++ b/.cursor/skills/today-dashboard/SKILL.md
@@ -35,10 +35,21 @@ Use `useRouter` from `@/i18n/navigation` for chart clicks. KPI cards use `Link`/
 ## Charts (LAB examples)
 
 - **Tasks by prosthesis** — `TodayBarChart` + `colorForCode` from prosthesis catalog; `canViewTasks`
-- **Cases due this week** — `casesDueWeek` buckets (next 7 local days); active sent cases with due date + in-progress task; `canViewCases`; empty card still shown
-- **Lab task activity** — stacked week chart; `canViewCases \|\| canViewTasks`
+- **Cases due** — forward day buckets (next 7 / 30); active sent cases with due date + in-progress task; `canViewCases`; empty card still shown
+- **Lab task activity** — stacked lookback day chart (7 / 30); `canViewCases \|\| canViewTasks`
 
-Week day labels: `useTodayDayLabelFormatter` + `mapWeekChartBuckets`.
+Week/month day labels: `useTodayDayLabelFormatter` + `mapWeekChartBuckets`.
+
+## Chart period dropdowns
+
+Seven time-window charts support a compact header `<select>` via `ChartCard` `headerAction` (no taller widgets). Periods persist in `localStorage` (`chart-periods.ts`) and are sent on `GET /today/summary`.
+
+| Chart | Periods | Direction |
+|-------|---------|-----------|
+| Appointments (all / mine), lab task activity, cases due | week, month | lookback (cases due = **forward**) |
+| Treatment mix, case partners, efficiency | week, month, year | lookback |
+
+Do **not** put year on day-series charts. Backend: `daysForChartPeriod` + `buildLocalDayBuckets` in `today.service.ts`.
 
 ## Permissions (task KPIs)
 
diff --git a/backend/src/modules/today/dto/today-summary-query.dto.ts b/backend/src/modules/today/dto/today-summary-query.dto.ts
index 9beef55..1c7cb1a 100644
--- a/backend/src/modules/today/dto/today-summary-query.dto.ts
+++ b/backend/src/modules/today/dto/today-summary-query.dto.ts
@@ -1,7 +1,10 @@
 import { ApiPropertyOptional } from '@nestjs/swagger';
-import { IsISO8601, IsInt, IsOptional, Max, Min } from 'class-validator';
+import { IsIn, IsISO8601, IsInt, IsOptional, Max, Min } from 'class-validator';
 import { Type } from 'class-transformer';
 
+const WEEK_MONTH = ['week', 'month'] as const;
+const WEEK_MONTH_YEAR = ['week', 'month', 'year'] as const;
+
 export class TodaySummaryQueryDto {
   @ApiPropertyOptional({
     description: 'Start of the local day range (ISO 8601). Defaults to UTC midnight today.',
@@ -30,4 +33,39 @@ export class TodaySummaryQueryDto {
   @Min(-840)
   @Max(840)
   utcOffsetMinutes?: number;
+
+  @ApiPropertyOptional({ enum: WEEK_MONTH })
+  @IsOptional()
+  @IsIn(WEEK_MONTH)
+  appointmentsWeekPeriod?: 'week' | 'month';
+
+  @ApiPropertyOptional({ enum: WEEK_MONTH })
+  @IsOptional()
+  @IsIn(WEEK_MONTH)
+  appointmentsWeekMinePeriod?: 'week' | 'month';
+
+  @ApiPropertyOptional({ enum: WEEK_MONTH })
+  @IsOptional()
+  @IsIn(WEEK_MONTH)
+  labTaskActivityPeriod?: 'week' | 'month';
+
+  @ApiPropertyOptional({ enum: WEEK_MONTH })
+  @IsOptional()
+  @IsIn(WEEK_MONTH)
+  casesDuePeriod?: 'week' | 'month';
+
+  @ApiPropertyOptional({ enum: WEEK_MONTH_YEAR })
+  @IsOptional()
+  @IsIn(WEEK_MONTH_YEAR)
+  treatmentMixPeriod?: 'week' | 'month' | 'year';
+
+  @ApiPropertyOptional({ enum: WEEK_MONTH_YEAR })
+  @IsOptional()
+  @IsIn(WEEK_MONTH_YEAR)
+  casePartnersPeriod?: 'week' | 'month' | 'year';
+
+  @ApiPropertyOptional({ enum: WEEK_MONTH_YEAR })
+  @IsOptional()
+  @IsIn(WEEK_MONTH_YEAR)
+  efficiencyPeriod?: 'week' | 'month' | 'year';
 }
diff --git a/backend/src/modules/today/today.service.ts b/backend/src/modules/today/today.service.ts
index 6ec22e4..1410061 100644
--- a/backend/src/modules/today/today.service.ts
+++ b/backend/src/modules/today/today.service.ts
@@ -145,6 +145,7 @@ export class TodayService {
             organizationId,
             to,
             query.utcOffsetMinutes,
+            resolveWeekMonthPeriod(query.appointmentsWeekPeriod, 'week'),
             charts,
           ),
         );
@@ -158,6 +159,7 @@ export class TodayService {
             userId,
             !membership.isOwner,
             to,
+            resolveWeekMonthYearPeriod(query.casePartnersPeriod, 'month'),
             charts,
           ),
         );
@@ -177,7 +179,13 @@ export class TodayService {
         );
         tasks.push(this.loadLabCasesPendingSend(organizationId, widgets));
         tasks.push(
-          this.loadTreatmentMixWeek(organizationId, to, locale, charts),
+          this.loadTreatmentMixWeek(
+            organizationId,
+            to,
+            locale,
+            resolveWeekMonthYearPeriod(query.treatmentMixPeriod, 'week'),
+            charts,
+          ),
         );
       }
 
@@ -197,6 +205,7 @@ export class TodayService {
             userId,
             to,
             query.utcOffsetMinutes,
+            resolveWeekMonthPeriod(query.appointmentsWeekMinePeriod, 'week'),
             charts,
           ),
         );
@@ -234,6 +243,7 @@ export class TodayService {
             organizationId,
             from,
             query.utcOffsetMinutes,
+            resolveWeekMonthPeriod(query.casesDuePeriod, 'week'),
             charts,
           ),
         );
@@ -247,6 +257,7 @@ export class TodayService {
             userId,
             false,
             to,
+            resolveWeekMonthYearPeriod(query.casePartnersPeriod, 'month'),
             charts,
           ),
         );
@@ -266,6 +277,7 @@ export class TodayService {
             organizationId,
             to,
             query.utcOffsetMinutes,
+            resolveWeekMonthPeriod(query.labTaskActivityPeriod, 'week'),
             charts,
           ),
         );
@@ -279,11 +291,19 @@ export class TodayService {
     }
 
     if (membership.isOwner) {
+      const efficiencyPeriod = resolveWeekMonthYearPeriod(
+        query.efficiencyPeriod,
+        'month',
+      );
       if (orgType === 'CLINIC') {
-        tasks.push(this.loadClinicEfficiencyReport(organizationId, to, charts));
+        tasks.push(
+          this.loadClinicEfficiencyReport(organizationId, to, efficiencyPeriod, charts),
+        );
       }
       if (orgType === 'LAB') {
-        tasks.push(this.loadLabEfficiencyReport(organizationId, to, charts));
+        tasks.push(
+          this.loadLabEfficiencyReport(organizationId, to, efficiencyPeriod, charts),
+        );
       }
       tasks.push(
         this.buildSubscriptionWidget(organizationId, membership.organization).then(
@@ -318,15 +338,18 @@ export class TodayService {
     organizationId: string,
     rangeEnd: Date,
     locale: CatalogLocale,
+    period: ChartPeriodWeekMonthYear,
     charts: TodayCharts,
   ) {
-    const weekStart = new Date(rangeEnd.getTime() - 7 * 86_400_000);
+    const windowStart = new Date(
+      rangeEnd.getTime() - daysForChartPeriod(period) * 86_400_000,
+    );
     const grouped = await this.prisma.treatmentDetail.groupBy({
       by: ['treatmentType'],
       where: {
         treatment: {
           organizationId,
-          treatmentAt: { gte: weekStart, lt: rangeEnd },
+          treatmentAt: { gte: windowStart, lt: rangeEnd },
         },
       },
       _count: { _all: true },
@@ -647,6 +670,7 @@ export class TodayService {
   private async loadClinicEfficiencyReport(
     organizationId: string,
     rangeEnd: Date,
+    period: ChartPeriodWeekMonthYear,
     charts: TodayCharts,
   ) {
     const members = await this.getActiveEditAccessMembers(
@@ -654,12 +678,14 @@ export class TodayService {
       'TAB_TREATMENT_EDIT',
     );
 
-    const monthStart = new Date(rangeEnd.getTime() - 30 * 86_400_000);
+    const windowStart = new Date(
+      rangeEnd.getTime() - daysForChartPeriod(period) * 86_400_000,
+    );
     const grouped = await this.prisma.treatment.groupBy({
       by: ['providerUserId'],
       where: {
         organizationId,
-        treatmentAt: { gte: monthStart, lt: rangeEnd },
+        treatmentAt: { gte: windowStart, lt: rangeEnd },
         providerUserId: { in: members.map((member) => member.userId) },
       },
       _count: { _all: true },
@@ -681,6 +707,7 @@ export class TodayService {
   private async loadLabEfficiencyReport(
     labOrganizationId: string,
     rangeEnd: Date,
+    period: ChartPeriodWeekMonthYear,
     charts: TodayCharts,
   ) {
     const members = await this.getActiveEditAccessMembers(
@@ -688,12 +715,14 @@ export class TodayService {
       'TAB_TASKS_EDIT',
     );
 
-    const monthStart = new Date(rangeEnd.getTime() - 30 * 86_400_000);
+    const windowStart = new Date(
+      rangeEnd.getTime() - daysForChartPeriod(period) * 86_400_000,
+    );
     const grouped = await this.prisma.labCaseTaskStatusEvent.groupBy({
       by: ['changedByUserId'],
       where: {
         toStatus: LabTaskStatus.COMPLETED,
-        changedAt: { gte: monthStart, lt: rangeEnd },
+        changedAt: { gte: windowStart, lt: rangeEnd },
         changedByUserId: { in: members.map((member) => member.userId) },
         task: {
           labCase: {
@@ -926,9 +955,15 @@ export class TodayService {
     labOrganizationId: string,
     rangeStart: Date,
     utcOffsetMinutes: number | undefined,
+    period: ChartPeriodWeekMonth,
     charts: TodayCharts,
   ) {
-    const dayBuckets = buildNextSevenLocalDayBuckets(rangeStart, utcOffsetMinutes);
+    const dayBuckets = buildLocalDayBuckets(
+      rangeStart,
+      daysForChartPeriod(period),
+      'forward',
+      utcOffsetMinutes,
+    );
     const weekStart = dayBuckets[0]?.start ?? rangeStart;
     const weekEnd = dayBuckets[dayBuckets.length - 1]?.end ?? rangeStart;
     const offsetMs = (utcOffsetMinutes ?? 0) * 60_000;
@@ -1034,12 +1069,14 @@ export class TodayService {
     organizationId: string,
     rangeEnd: Date,
     utcOffsetMinutes: number | undefined,
+    period: ChartPeriodWeekMonth,
     charts: TodayCharts,
   ) {
     charts.appointmentsWeekAll = await this.loadAppointmentsWeekSeries(
       organizationId,
       rangeEnd,
       utcOffsetMinutes,
+      period,
     );
   }
 
@@ -1048,12 +1085,14 @@ export class TodayService {
     providerUserId: string,
     rangeEnd: Date,
     utcOffsetMinutes: number | undefined,
+    period: ChartPeriodWeekMonth,
     charts: TodayCharts,
   ) {
     charts.appointmentsWeekMine = await this.loadAppointmentsWeekSeries(
       organizationId,
       rangeEnd,
       utcOffsetMinutes,
+      period,
       providerUserId,
     );
   }
@@ -1062,9 +1101,15 @@ export class TodayService {
     organizationId: string,
     rangeEnd: Date,
     utcOffsetMinutes: number | undefined,
+    period: ChartPeriodWeekMonth,
     providerUserId?: string,
   ): Promise<ChartBucket[]> {
-    const dayBuckets = buildLastSevenLocalDayBuckets(rangeEnd, utcOffsetMinutes);
+    const dayBuckets = buildLocalDayBuckets(
+      rangeEnd,
+      daysForChartPeriod(period),
+      'lookback',
+      utcOffsetMinutes,
+    );
     const weekStart = dayBuckets[0]?.start ?? rangeEnd;
     const weekEnd = rangeEnd;
 
@@ -1101,9 +1146,15 @@ export class TodayService {
     labOrganizationId: string,
     rangeEnd: Date,
     utcOffsetMinutes: number | undefined,
+    period: ChartPeriodWeekMonth,
     charts: TodayCharts,
   ) {
-    const dayBuckets = buildLastSevenLocalDayBuckets(rangeEnd, utcOffsetMinutes);
+    const dayBuckets = buildLocalDayBuckets(
+      rangeEnd,
+      daysForChartPeriod(period),
+      'lookback',
+      utcOffsetMinutes,
+    );
     const weekStart = dayBuckets[0]?.start ?? rangeEnd;
     const weekEnd = rangeEnd;
     const offsetMs = (utcOffsetMinutes ?? 0) * 60_000;
@@ -1168,9 +1219,12 @@ export class TodayService {
     userId: string,
     scopeToUser: boolean,
     rangeEnd: Date,
+    period: ChartPeriodWeekMonthYear,
     charts: TodayCharts,
   ) {
-    const rangeStart = new Date(rangeEnd.getTime() - 30 * 86_400_000);
+    const rangeStart = new Date(
+      rangeEnd.getTime() - daysForChartPeriod(period) * 86_400_000,
+    );
 
     const cases = await this.prisma.labCase.findMany({
       where: {
@@ -1363,51 +1417,64 @@ function aggregateCount(
 
 type LocalDayBucket = { code: string; label: string; start: Date; end: Date };
 
-function buildLastSevenLocalDayBuckets(
-  rangeEnd: Date,
+type ChartPeriodWeekMonth = 'week' | 'month';
+type ChartPeriodWeekMonthYear = 'week' | 'month' | 'year';
+
+function daysForChartPeriod(period: ChartPeriodWeekMonthYear): 7 | 30 | 365 {
+  switch (period) {
+    case 'month':
+      return 30;
+    case 'year':
+      return 365;
+    default:
+      return 7;
+  }
+}
+
+function resolveWeekMonthPeriod(
+  value: string | undefined,
+  fallback: ChartPeriodWeekMonth,
+): ChartPeriodWeekMonth {
+  return value === 'week' || value === 'month' ? value : fallback;
+}
+
+function resolveWeekMonthYearPeriod(
+  value: string | undefined,
+  fallback: ChartPeriodWeekMonthYear,
+): ChartPeriodWeekMonthYear {
+  return value === 'week' || value === 'month' || value === 'year' ? value : fallback;
+}
+
+function buildLocalDayBuckets(
+  anchor: Date,
+  count: number,
+  direction: 'lookback' | 'forward',
   utcOffsetMinutes?: number,
 ): LocalDayBucket[] {
   const offsetMs = (utcOffsetMinutes ?? 0) * 60_000;
   const dayMs = 86_400_000;
   const buckets: LocalDayBucket[] = [];
 
-  for (let index = 0; index < 7; index += 1) {
-    const start = new Date(rangeEnd.getTime() - (7 - index) * dayMs);
-    const end = new Date(start.getTime() + dayMs);
-    const code = localDayKeyFromDate(start, offsetMs);
-    buckets.push({
-      code,
-      label: code,
-      start,
-      end,
-    });
+  if (direction === 'lookback') {
+    for (let index = 0; index < count; index += 1) {
+      const start = new Date(anchor.getTime() - (count - index) * dayMs);
+      const end = new Date(start.getTime() + dayMs);
+      const code = localDayKeyFromDate(start, offsetMs);
+      buckets.push({ code, label: code, start, end });
+    }
+    return buckets;
   }
 
-  return buckets;
-}
-
-function buildNextSevenLocalDayBuckets(
-  rangeStart: Date,
-  utcOffsetMinutes?: number,
-): LocalDayBucket[] {
-  const offsetMs = (utcOffsetMinutes ?? 0) * 60_000;
-  const dayMs = 86_400_000;
-  const localMs = rangeStart.getTime() + offsetMs;
+  const localMs = anchor.getTime() + offsetMs;
   const local = new Date(localMs);
   local.setUTCHours(0, 0, 0, 0);
   const dayStart = new Date(local.getTime() - offsetMs);
-  const buckets: LocalDayBucket[] = [];
 
-  for (let index = 0; index < 7; index += 1) {
+  for (let index = 0; index < count; index += 1) {
     const start = new Date(dayStart.getTime() + index * dayMs);
     const end = new Date(start.getTime() + dayMs);
     const code = localDayKeyFromDate(start, offsetMs);
-    buckets.push({
-      code,
-      label: code,
-      start,
-      end,
-    });
+    buckets.push({ code, label: code, start, end });
   }
 
   return buckets;
diff --git a/frontend/messages/en.json b/frontend/messages/en.json
index 5e544af..760b32c 100644
--- a/frontend/messages/en.json
+++ b/frontend/messages/en.json
@@ -224,9 +224,9 @@
     "subscriptionPeriodPercent": "{percent}%",
     "subscriptionPeriodDays": "{elapsed}/{total} days",
     "subscriptionNoPlan": "No active plan",
-    "chartAppointmentsWeekAllTitle": "Appointments This Week",
+    "chartAppointmentsWeekAllTitle": "Appointments",
     "chartAppointmentsWeekAllSubtitle": "All providers — last 7 days",
-    "chartAppointmentsWeekMineTitle": "My Appointments This Week",
+    "chartAppointmentsWeekMineTitle": "My Appointments",
     "chartAppointmentsWeekMineSubtitle": "Your schedule — last 7 days",
     "chartLabTaskActivityTitle": "Lab Task Activity",
     "chartLabTaskActivitySubtitle": "Last 7 days",
@@ -245,7 +245,7 @@
     "chartTreatmentPlanCompletionRatio": "With treatment plan",
     "chartTasksByProsthesisTitle": "In-Progress Tasks by Prosthesis",
     "chartTasksByProsthesisSubtitle": "Current workload mix",
-    "chartCasesDueWeekTitle": "Cases Due This Week",
+    "chartCasesDueWeekTitle": "Cases Due",
     "chartCasesDueWeekSubtitle": "Active cases with a due date in the next 7 days",
     "chartCasePartnersClinicTitle": "Cases by Lab",
     "chartCasePartnersLabTitle": "Cases by Clinic",
@@ -256,6 +256,10 @@
     "chartEfficiencyReportSubtitleClinic": "Treatments created by staff — last 30 days",
     "chartEfficiencyReportSubtitleLab": "Tasks completed by staff — last 30 days",
     "chartEmpty": "No data for this period yet.",
+    "periodWeek": "Week",
+    "periodMonth": "Month",
+    "periodYear": "Year",
+    "periodSelectAria": "Chart time period",
     "upcomingAppointmentsTitle": "Upcoming Today",
     "upcomingAppointmentsSubtitle": "Appointments not yet finished",
     "viewAllAppointments": "View schedule",
diff --git a/frontend/messages/fa.json b/frontend/messages/fa.json
index cdf27d3..17ea3d7 100644
--- a/frontend/messages/fa.json
+++ b/frontend/messages/fa.json
@@ -224,9 +224,9 @@
     "subscriptionPeriodPercent": "{percent}٪",
     "subscriptionPeriodDays": "{elapsed}/{total} روز",
     "subscriptionNoPlan": "اشتراک فعال نیست",
-    "chartAppointmentsWeekAllTitle": "نوبت‌های این هفته",
+    "chartAppointmentsWeekAllTitle": "نوبت‌ها",
     "chartAppointmentsWeekAllSubtitle": "همه ارائه‌دهندگان — ۷ روز گذشته",
-    "chartAppointmentsWeekMineTitle": "نوبت‌های من این هفته",
+    "chartAppointmentsWeekMineTitle": "نوبت‌های من",
     "chartAppointmentsWeekMineSubtitle": "برنامه شما — ۷ روز گذشته",
     "chartLabTaskActivityTitle": "فعالیت وظایف آزمایشگاه",
     "chartLabTaskActivitySubtitle": "۷ روز گذشته",
@@ -245,7 +245,7 @@
     "chartTreatmentPlanCompletionRatio": "دارای طرح درمان",
     "chartTasksByProsthesisTitle": "وظایف در حال انجام بر اساس پروتز",
     "chartTasksByProsthesisSubtitle": "ترکیب بار کاری فعلی",
-    "chartCasesDueWeekTitle": "پرونده‌های موعددار این هفته",
+    "chartCasesDueWeekTitle": "پرونده‌های موعددار",
     "chartCasesDueWeekSubtitle": "پرونده‌های فعال با موعد تحویل در ۷ روز آینده",
     "chartCasePartnersClinicTitle": "کیس‌ها بر اساس لابراتوار",
     "chartCasePartnersLabTitle": "کیس‌ها بر اساس کلینیک",
@@ -256,6 +256,10 @@
     "chartEfficiencyReportSubtitleClinic": "درمان‌های ثبت‌شده توسط کارکنان — ۳۰ روز گذشته",
     "chartEfficiencyReportSubtitleLab": "وظایف تکمیل‌شده توسط کارکنان — ۳۰ روز گذشته",
     "chartEmpty": "هنوز داده‌ای برای این بازه وجود ندارد.",
+    "periodWeek": "هفته",
+    "periodMonth": "ماه",
+    "periodYear": "سال",
+    "periodSelectAria": "بازه زمانی نمودار",
     "upcomingAppointmentsTitle": "نوبت‌های پیش رو",
     "upcomingAppointmentsSubtitle": "نوبت‌های باقی‌مانده امروز",
     "viewAllAppointments": "مشاهده برنامه",
diff --git a/frontend/messages/nl.json b/frontend/messages/nl.json
index b6ced7d..bc00c67 100644
--- a/frontend/messages/nl.json
+++ b/frontend/messages/nl.json
@@ -224,9 +224,9 @@
     "subscriptionPeriodPercent": "{percent}%",
     "subscriptionPeriodDays": "{elapsed}/{total} dagen",
     "subscriptionNoPlan": "Geen actief abonnement",
-    "chartAppointmentsWeekAllTitle": "Afspraken deze week",
+    "chartAppointmentsWeekAllTitle": "Afspraken",
     "chartAppointmentsWeekAllSubtitle": "Alle behandelaars — afgelopen 7 dagen",
-    "chartAppointmentsWeekMineTitle": "Mijn afspraken deze week",
+    "chartAppointmentsWeekMineTitle": "Mijn afspraken",
     "chartAppointmentsWeekMineSubtitle": "Uw planning — afgelopen 7 dagen",
     "chartLabTaskActivityTitle": "Labtaakactiviteit",
     "chartLabTaskActivitySubtitle": "Afgelopen 7 dagen",
@@ -245,7 +245,7 @@
     "chartTreatmentPlanCompletionRatio": "Met behandelplan",
     "chartTasksByProsthesisTitle": "Lopende taken per prothese",
     "chartTasksByProsthesisSubtitle": "Huidige werklastmix",
-    "chartCasesDueWeekTitle": "Cases met deadline deze week",
+    "chartCasesDueWeekTitle": "Cases met deadline",
     "chartCasesDueWeekSubtitle": "Actieve cases met een deadline in de komende 7 dagen",
     "chartCasePartnersClinicTitle": "Cases per lab",
     "chartCasePartnersLabTitle": "Cases per kliniek",
@@ -256,6 +256,10 @@
     "chartEfficiencyReportSubtitleClinic": "Behandelingen aangemaakt door medewerkers — afgelopen 30 dagen",
     "chartEfficiencyReportSubtitleLab": "Taken voltooid door medewerkers — afgelopen 30 dagen",
     "chartEmpty": "Nog geen gegevens voor deze periode.",
+    "periodWeek": "Week",
+    "periodMonth": "Maand",
+    "periodYear": "Jaar",
+    "periodSelectAria": "Tijdvak grafiek",
     "upcomingAppointmentsTitle": "Komende afspraken vandaag",
     "upcomingAppointmentsSubtitle": "Afspraken die nog niet zijn afgerond",
     "viewAllAppointments": "Bekijk planning",
diff --git a/frontend/src/components/today/chart-day-labels.ts b/frontend/src/components/today/chart-day-labels.ts
index 2186d95..1ebe7b3 100644
--- a/frontend/src/components/today/chart-day-labels.ts
+++ b/frontend/src/components/today/chart-day-labels.ts
@@ -30,3 +30,44 @@ export function mapWeekChartBuckets<T extends { code: string; label: string }>(
     label: formatTodayChartDayLabel(bucket.code, formatter),
   }));
 }
+
+/**
+ * Recharts XAxis spacing for dense day-series (e.g. 30-day month view).
+ * `preserveStartEnd` keeps first/last ticks; `minTickGap` skips overlaps.
+ */
+export function todayChartDenseXAxisProps(pointCount: number): {
+  interval: number | 'preserveStartEnd';
+  minTickGap?: number;
+  fontSize: number;
+} {
+  if (pointCount <= 8) {
+    return { interval: 0, fontSize: 11 };
+  }
+  if (pointCount <= 14) {
+    return { interval: 1, fontSize: 10 };
+  }
+  return { interval: 'preserveStartEnd', minTickGap: 36, fontSize: 10 };
+}
+
+/**
+ * Category bar charts (prosthesis / treatment mix) — fewer bars but longer labels.
+ */
+export function todayChartCategoryXAxisProps(pointCount: number): {
+  interval: number | 'preserveStartEnd';
+  minTickGap?: number;
+  fontSize: number;
+  truncateMax: number;
+} {
+  if (pointCount <= 4) {
+    return { interval: 0, fontSize: 11, truncateMax: 12 };
+  }
+  if (pointCount <= 6) {
+    return { interval: 1, fontSize: 10, truncateMax: 9, minTickGap: 28 };
+  }
+  return {
+    interval: 'preserveStartEnd',
+    minTickGap: 40,
+    fontSize: 10,
+    truncateMax: 8,
+  };
+}
diff --git a/frontend/src/components/today/chart-periods.ts b/frontend/src/components/today/chart-periods.ts
new file mode 100644
index 0000000..0833145
--- /dev/null
+++ b/frontend/src/components/today/chart-periods.ts
@@ -0,0 +1,103 @@
+'use client';
+
+export type TodayChartPeriod = 'week' | 'month' | 'year';
+
+export type TodayChartPeriodKey =
+  | 'appointmentsWeekAll'
+  | 'appointmentsWeekMine'
+  | 'labTaskActivity'
+  | 'casesDue'
+  | 'treatmentMix'
+  | 'casePartners'
+  | 'efficiency';
+
+export type TodayChartPeriods = Record<TodayChartPeriodKey, TodayChartPeriod>;
+
+export const TODAY_CHART_PERIOD_KEYS: TodayChartPeriodKey[] = [
+  'appointmentsWeekAll',
+  'appointmentsWeekMine',
+  'labTaskActivity',
+  'casesDue',
+  'treatmentMix',
+  'casePartners',
+  'efficiency',
+];
+
+export const TODAY_CHART_PERIOD_DEFAULTS: TodayChartPeriods = {
+  appointmentsWeekAll: 'week',
+  appointmentsWeekMine: 'week',
+  labTaskActivity: 'week',
+  casesDue: 'week',
+  treatmentMix: 'week',
+  casePartners: 'month',
+  efficiency: 'month',
+};
+
+/** Aggregate charts that support year; day-series charts are week/month only. */
+export const TODAY_CHART_PERIODS_WITH_YEAR: ReadonlySet<TodayChartPeriodKey> = new Set([
+  'treatmentMix',
+  'casePartners',
+  'efficiency',
+]);
+
+export function daysForTodayChartPeriod(period: TodayChartPeriod): 7 | 30 | 365 {
+  switch (period) {
+    case 'month':
+      return 30;
+    case 'year':
+      return 365;
+    default:
+      return 7;
+  }
+}
+
+export function allowedPeriodsForChart(
+  key: TodayChartPeriodKey,
+): readonly TodayChartPeriod[] {
+  return TODAY_CHART_PERIODS_WITH_YEAR.has(key)
+    ? (['week', 'month', 'year'] as const)
+    : (['week', 'month'] as const);
+}
+
+function storageKey(organizationId: string): string {
+  return `dyolink:today-chart-periods:${organizationId}`;
+}
+
+function normalizePeriod(
+  key: TodayChartPeriodKey,
+  value: unknown,
+): TodayChartPeriod {
+  const allowed = allowedPeriodsForChart(key);
+  if (typeof value === 'string' && (allowed as readonly string[]).includes(value)) {
+    return value as TodayChartPeriod;
+  }
+  return TODAY_CHART_PERIOD_DEFAULTS[key];
+}
+
+export function loadTodayChartPeriods(organizationId: string): TodayChartPeriods {
+  if (typeof window === 'undefined') return { ...TODAY_CHART_PERIOD_DEFAULTS };
+  try {
+    const raw = window.localStorage.getItem(storageKey(organizationId));
+    if (!raw) return { ...TODAY_CHART_PERIOD_DEFAULTS };
+    const parsed = JSON.parse(raw) as Partial<Record<TodayChartPeriodKey, unknown>>;
+    const next = { ...TODAY_CHART_PERIOD_DEFAULTS };
+    for (const key of TODAY_CHART_PERIOD_KEYS) {
+      next[key] = normalizePeriod(key, parsed[key]);
+    }
+    return next;
+  } catch {
+    return { ...TODAY_CHART_PERIOD_DEFAULTS };
+  }
+}
+
+export function saveTodayChartPeriods(
+  organizationId: string,
+  periods: TodayChartPeriods,
+): void {
+  if (typeof window === 'undefined') return;
+  try {
+    window.localStorage.setItem(storageKey(organizationId), JSON.stringify(periods));
+  } catch {
+    // ignore quota / private mode
+  }
+}
diff --git a/frontend/src/components/ui/today/ChartCard.tsx b/frontend/src/components/ui/today/ChartCard.tsx
index ba7dd83..9f669cd 100644
--- a/frontend/src/components/ui/today/ChartCard.tsx
+++ b/frontend/src/components/ui/today/ChartCard.tsx
@@ -5,25 +5,48 @@ import { ChartCardSkeleton } from '@/components/ui/today/TodaySkeleton';
 interface ChartCardProps {
   title: string;
   subtitle?: string;
+  /** Compact control in the title row (e.g. period select) — does not grow card height. */
+  headerAction?: ReactNode;
   children: ReactNode;
   emptyMessage?: string;
   isEmpty?: boolean;
   loading?: boolean;
   /**
-   * Two-column layout: left 2/3 (header + children), right 1/3 (chartPanel).
-   * Chart column is independent and vertically centered.
+   * Three-column layout for chart + legend gadgets:
+   * 1) title + legends, 2) centered chart panel, 3) header action (period select).
+   * Column order is grid flow — RTL reverses naturally with `dir`.
    */
   sidePanelLayout?: boolean;
   chartPanel?: ReactNode;
 }
 
-function ChartCardHeader({
+function ChartCardTitleBlock({
   title,
   subtitle,
 }: Pick<ChartCardProps, 'title' | 'subtitle'>) {
   return (
     <div className="mb-3 shrink-0">
-      <h2 className="text-base font-semibold text-card-foreground">{title}</h2>
+      <h2 className="min-w-0 truncate text-base font-semibold text-card-foreground">
+        {title}
+      </h2>
+      {subtitle ? <p className="mt-1 text-xs text-text-muted">{subtitle}</p> : null}
+    </div>
+  );
+}
+
+function ChartCardHeader({
+  title,
+  subtitle,
+  headerAction,
+}: Pick<ChartCardProps, 'title' | 'subtitle' | 'headerAction'>) {
+  return (
+    <div className="mb-3 shrink-0">
+      <div className="flex items-center justify-between gap-2">
+        <h2 className="min-w-0 truncate text-base font-semibold text-card-foreground">
+          {title}
+        </h2>
+        {headerAction ? <div className="shrink-0">{headerAction}</div> : null}
+      </div>
       {subtitle ? <p className="mt-1 text-xs text-text-muted">{subtitle}</p> : null}
     </div>
   );
@@ -32,6 +55,7 @@ function ChartCardHeader({
 export function ChartCard({
   title,
   subtitle,
+  headerAction,
   children,
   emptyMessage,
   isEmpty = false,
@@ -45,9 +69,10 @@ export function ChartCard({
 
   if (sidePanelLayout) {
     return (
-      <Card className="grid h-full min-h-0 grid-cols-[2fr_1fr] gap-x-3 overflow-hidden">
+      <Card className="grid h-full min-h-0 grid-cols-[minmax(0,1.1fr)_minmax(0,1.4fr)_auto] gap-x-3 overflow-hidden">
+        {/* Col 1 — title + legends (unchanged stacking) */}
         <div className="flex min-h-0 flex-col overflow-hidden">
-          <ChartCardHeader title={title} subtitle={subtitle} />
+          <ChartCardTitleBlock title={title} subtitle={subtitle} />
           {isEmpty ? (
             <div className="flex min-h-0 flex-1 items-center justify-center">
               <div className="flex w-full items-center justify-center rounded-[var(--radius-md)] border border-dashed border-border/50 bg-background-secondary/20 py-8">
@@ -59,20 +84,28 @@ export function ChartCard({
           )}
         </div>
 
+        {/* Col 2 — pie / chart, centered */}
         {!isEmpty && chartPanel ? (
           <div className="flex min-h-0 items-center justify-center overflow-hidden py-1">
             <div className="aspect-square h-full max-h-full w-full max-w-full">
               {chartPanel}
             </div>
           </div>
-        ) : null}
+        ) : (
+          <div className="min-h-0" aria-hidden />
+        )}
+
+        {/* Col 3 — period select at top, aligned to the outer end like other gadgets */}
+        <div className="flex shrink-0 flex-col items-end self-start pt-0.5">
+          {headerAction}
+        </div>
       </Card>
     );
   }
 
   return (
     <Card className="flex h-full min-h-0 flex-col overflow-hidden">
-      <ChartCardHeader title={title} subtitle={subtitle} />
+      <ChartCardHeader title={title} subtitle={subtitle} headerAction={headerAction} />
 
       {isEmpty ? (
         <div className="flex min-h-0 flex-1 items-center justify-center rounded-[var(--radius-md)] border border-dashed border-border/50 bg-background-secondary/20">
diff --git a/frontend/src/components/ui/today/TodayAreaChart.tsx b/frontend/src/components/ui/today/TodayAreaChart.tsx
index bf8d448..a7a9c72 100644
--- a/frontend/src/components/ui/today/TodayAreaChart.tsx
+++ b/frontend/src/components/ui/today/TodayAreaChart.tsx
@@ -17,6 +17,7 @@ import {
   TODAY_CHART_PRIMARY_COLOR,
   TODAY_CHART_TOOLTIP_STYLE,
 } from '@/components/today/chart-theme';
+import { todayChartDenseXAxisProps } from '@/components/today/chart-day-labels';
 
 interface TodayAreaChartProps {
   data: TodayChartBucket[];
@@ -31,10 +32,12 @@ export function TodayAreaChart({
   gradientId = 'todayAreaFill',
   showXAxis = true,
 }: TodayAreaChartProps) {
+  const xAxis = todayChartDenseXAxisProps(data.length);
+
   return (
     <TodayChartFrame>
       <ResponsiveContainer width="100%" height="100%">
-        <AreaChart data={data} margin={{ top: 8, right: 8, left: -12, bottom: showXAxis ? 0 : -4 }}>
+        <AreaChart data={data} margin={{ top: 8, right: 8, left: -12, bottom: showXAxis ? 2 : -4 }}>
           <defs>
             <linearGradient id={gradientId} x1="0" y1="0" x2="0" y2="1">
               <stop offset="0%" stopColor={color} stopOpacity={0.45} />
@@ -45,10 +48,11 @@ export function TodayAreaChart({
           {showXAxis ? (
             <XAxis
               dataKey="label"
-              tick={{ fill: TODAY_CHART_AXIS_COLOR, fontSize: 11 }}
+              tick={{ fill: TODAY_CHART_AXIS_COLOR, fontSize: xAxis.fontSize }}
               axisLine={{ stroke: TODAY_CHART_GRID_COLOR }}
               tickLine={false}
-              interval={1}
+              interval={xAxis.interval}
+              minTickGap={xAxis.minTickGap}
             />
           ) : (
             <XAxis dataKey="label" hide />
@@ -71,7 +75,7 @@ export function TodayAreaChart({
             stroke={color}
             strokeWidth={2}
             fill={`url(#${gradientId})`}
-            dot={{ r: 3, fill: color, strokeWidth: 0 }}
+            dot={data.length <= 14 ? { r: 3, fill: color, strokeWidth: 0 } : false}
             activeDot={{ r: 5, fill: color }}
           />
         </AreaChart>
diff --git a/frontend/src/components/ui/today/TodayBarChart.tsx b/frontend/src/components/ui/today/TodayBarChart.tsx
index 3934e2b..d1721f1 100644
--- a/frontend/src/components/ui/today/TodayBarChart.tsx
+++ b/frontend/src/components/ui/today/TodayBarChart.tsx
@@ -20,6 +20,7 @@ import {
   TODAY_CHART_TOOLTIP_BG,
   TODAY_CHART_TOOLTIP_BORDER,
 } from '@/components/today/chart-theme';
+import { todayChartCategoryXAxisProps } from '@/components/today/chart-day-labels';
 
 interface TodayBarChartProps {
   data: TodayChartBucket[];
@@ -28,9 +29,10 @@ interface TodayBarChartProps {
 }
 
 export function TodayBarChart({ data, colorForCode, onBarClick }: TodayBarChartProps) {
+  const xAxis = todayChartCategoryXAxisProps(data.length);
   const chartData = data.map((item) => ({
     ...item,
-    shortLabel: truncateLabel(item.label),
+    shortLabel: truncateLabel(item.label, xAxis.truncateMax),
   }));
 
   return (
@@ -61,20 +63,21 @@ export function TodayBarChart({ data, colorForCode, onBarClick }: TodayBarChartP
                     <text
                       x={x}
                       y={y}
-                      dy={16}
+                      dy={14}
                       textAnchor="middle"
                       fill={fill}
-                      fontSize={11}
+                      fontSize={xAxis.fontSize}
                     >
                       {payload.value}
                     </text>
                   );
                 }
-              : { fill: TODAY_CHART_AXIS_COLOR, fontSize: 11 }
+              : { fill: TODAY_CHART_AXIS_COLOR, fontSize: xAxis.fontSize }
           }
           axisLine={{ stroke: TODAY_CHART_GRID_COLOR }}
           tickLine={false}
-          interval={0}
+          interval={xAxis.interval}
+          minTickGap={xAxis.minTickGap}
         />
         <YAxis
           allowDecimals={false}
diff --git a/frontend/src/components/ui/today/TodayChartPeriodSelect.tsx b/frontend/src/components/ui/today/TodayChartPeriodSelect.tsx
new file mode 100644
index 0000000..4ce3148
--- /dev/null
+++ b/frontend/src/components/ui/today/TodayChartPeriodSelect.tsx
@@ -0,0 +1,51 @@
+'use client';
+
+import { useTranslations } from 'next-intl';
+import { FORM_SELECT_CLASS } from '@/components/shared/formSelectStyles';
+import type { TodayChartPeriod } from '@/components/today/chart-periods';
+
+type TodayChartPeriodSelectProps = {
+  value: TodayChartPeriod;
+  options: readonly TodayChartPeriod[];
+  onChange: (period: TodayChartPeriod) => void;
+  disabled?: boolean;
+  id?: string;
+};
+
+export function TodayChartPeriodSelect({
+  value,
+  options,
+  onChange,
+  disabled = false,
+  id,
+}: TodayChartPeriodSelectProps) {
+  const t = useTranslations('today');
+
+  const labelFor = (period: TodayChartPeriod) => {
+    switch (period) {
+      case 'month':
+        return t('periodMonth');
+      case 'year':
+        return t('periodYear');
+      default:
+        return t('periodWeek');
+    }
+  };
+
+  return (
+    <select
+      id={id}
+      value={value}
+      disabled={disabled}
+      aria-label={t('periodSelectAria')}
+      className={`${FORM_SELECT_CLASS} max-w-[7.5rem] shrink-0 py-0.5 text-xs`}
+      onChange={(event) => onChange(event.target.value as TodayChartPeriod)}
+    >
+      {options.map((period) => (
+        <option key={period} value={period}>
+          {labelFor(period)}
+        </option>
+      ))}
+    </select>
+  );
+}
diff --git a/frontend/src/components/ui/today/TodayDashboard.tsx b/frontend/src/components/ui/today/TodayDashboard.tsx
index f7a920a..021c3e8 100644
--- a/frontend/src/components/ui/today/TodayDashboard.tsx
+++ b/frontend/src/components/ui/today/TodayDashboard.tsx
@@ -16,6 +16,13 @@ import {
 } from '@/components/shared/permissions';
 import { KpiCard } from '@/components/ui/today/KpiCard';
 import { ChartCard } from '@/components/ui/today/ChartCard';
+import { TodayChartPeriodSelect } from '@/components/ui/today/TodayChartPeriodSelect';
+import {
+  allowedPeriodsForChart,
+  type TodayChartPeriod,
+  type TodayChartPeriodKey,
+  type TodayChartPeriods,
+} from '@/components/today/chart-periods';
 import { TodayAreaChart } from '@/components/ui/today/TodayAreaChart';
 import { TodayBarChart } from '@/components/ui/today/TodayBarChart';
 import {
@@ -62,6 +69,8 @@ interface TodayDashboardProps {
   charts: TodaySummaryCharts;
   actions: TodaySummaryActions;
   subscription?: TodaySubscriptionSnapshot;
+  chartPeriods: TodayChartPeriods;
+  onChartPeriodChange: (key: TodayChartPeriodKey, period: TodayChartPeriod) => void;
   loading?: boolean;
   isInitialLoad?: boolean;
   hasError?: boolean;
@@ -72,6 +81,8 @@ export function TodayDashboard({
   charts,
   actions,
   subscription,
+  chartPeriods,
+  onChartPeriodChange,
   loading = false,
   isInitialLoad = false,
   hasError = false,
@@ -161,6 +172,8 @@ export function TodayDashboard({
       charts,
       actions,
       subscription,
+      chartPeriods,
+      onChartPeriodChange,
       kpiDefinitions,
       showSubscriptionCard: showSubscriptionCard && Boolean(subscription),
       showCaseCompletionCard:
@@ -195,6 +208,8 @@ export function TodayDashboard({
     orgType,
     isOwner,
     charts,
+    chartPeriods,
+    onChartPeriodChange,
     t,
     dayLabelFormatter,
     widgets,
@@ -314,6 +329,8 @@ function buildDashboardCells(options: {
   charts: TodaySummaryCharts;
   actions: TodaySummaryActions;
   subscription?: TodaySubscriptionSnapshot;
+  chartPeriods: TodayChartPeriods;
+  onChartPeriodChange: (key: TodayChartPeriodKey, period: TodayChartPeriod) => void;
   kpiDefinitions: ReturnType<typeof getVisibleTodayKpis>;
   showSubscriptionCard: boolean;
   showCaseCompletionCard: boolean;
@@ -348,6 +365,8 @@ function buildDashboardCells(options: {
               canEditCases(options.currentOrganization))),
         dayLabelFormatter: options.dayLabelFormatter,
         prosthesisCatalog: options.prosthesisCatalog,
+        chartPeriods: options.chartPeriods,
+        onChartPeriodChange: options.onChartPeriodChange,
         onTasksProsthesisClick: options.onTasksProsthesisClick,
         onCasePartnerClick: options.onCasePartnerClick,
       }),
@@ -438,10 +457,21 @@ function buildChartCells(options: {
   showCasePartnersChart: boolean;
   dayLabelFormatter: ReturnType<typeof useTodayDayLabelFormatter>;
   prosthesisCatalog: ProsthesisCatalogEntry[];
+  chartPeriods: TodayChartPeriods;
+  onChartPeriodChange: (key: TodayChartPeriodKey, period: TodayChartPeriod) => void;
   onTasksProsthesisClick?: (code: string) => void;
   onCasePartnerClick?: (code: string) => void;
 }): TodayDashboardCell[] {
-  const { t, charts, orgType, isOwner, showMyAppointmentsWeekChart } = options;
+  const { t, charts, orgType, isOwner, showMyAppointmentsWeekChart, chartPeriods } = options;
+
+  const periodSelect = (key: TodayChartPeriodKey) => (
+    <TodayChartPeriodSelect
+      value={chartPeriods[key]}
+      options={allowedPeriodsForChart(key)}
+      onChange={(period) => options.onChartPeriodChange(key, period)}
+    />
+  );
+
   const cells: TodayDashboardCell[] = [];
   const areaChart = TODAY_DASHBOARD_LAYOUT.chartArea;
   const barChart = TODAY_DASHBOARD_LAYOUT.chartBar;
@@ -467,7 +497,7 @@ function buildChartCells(options: {
       content: (
         <ChartCard
           title={t('chartAppointmentsWeekAllTitle')}
-          subtitle={t('chartAppointmentsWeekAllSubtitle')}
+          headerAction={periodSelect('appointmentsWeekAll')}
           isEmpty={appointmentsWeekAllData.every((row) => row.count === 0)}
           emptyMessage={t('chartEmpty')}
         >
@@ -488,7 +518,7 @@ function buildChartCells(options: {
       content: (
         <ChartCard
           title={t('chartAppointmentsWeekMineTitle')}
-          subtitle={t('chartAppointmentsWeekMineSubtitle')}
+          headerAction={periodSelect('appointmentsWeekMine')}
           isEmpty={appointmentsWeekMineData.every((row) => row.count === 0)}
           emptyMessage={t('chartEmpty')}
         >
@@ -505,7 +535,7 @@ function buildChartCells(options: {
       content: (
         <ChartCard
           title={t('chartLabTaskActivityTitle')}
-          subtitle={t('chartLabTaskActivitySubtitle')}
+          headerAction={periodSelect('labTaskActivity')}
           isEmpty={labTaskActivityData.every(
             (row) => row.completed === 0 && row.received === 0,
           )}
@@ -533,11 +563,7 @@ function buildChartCells(options: {
       content: (
         <ChartCard
           title={t('chartEfficiencyReportTitle')}
-          subtitle={
-            orgType === 'CLINIC'
-              ? t('chartEfficiencyReportSubtitleClinic')
-              : t('chartEfficiencyReportSubtitleLab')
-          }
+          headerAction={periodSelect('efficiency')}
           isEmpty={efficiencyReportData.every((row) => row.count === 0)}
           emptyMessage={t('chartEmpty')}
           sidePanelLayout
@@ -588,7 +614,7 @@ function buildChartCells(options: {
       content: (
         <ChartCard
           title={t('chartTreatmentMixTitle')}
-          subtitle={t('chartTreatmentMixSubtitle')}
+          headerAction={periodSelect('treatmentMix')}
           isEmpty={treatmentData.length === 0}
           emptyMessage={t('chartEmpty')}
         >
@@ -638,7 +664,7 @@ function buildChartCells(options: {
       content: (
         <ChartCard
           title={t('chartCasesDueWeekTitle')}
-          subtitle={t('chartCasesDueWeekSubtitle')}
+          headerAction={periodSelect('casesDue')}
           isEmpty={casesDueWeekData.every((row) => row.count === 0)}
           emptyMessage={t('chartEmpty')}
         >
@@ -660,7 +686,7 @@ function buildChartCells(options: {
               ? t('chartCasePartnersClinicTitle')
               : t('chartCasePartnersLabTitle')
           }
-          subtitle={t('chartCasePartnersSubtitle')}
+          headerAction={periodSelect('casePartners')}
           isEmpty={casePartnersData.every(
             (row) => row.completed === 0 && row.pending === 0,
           )}
diff --git a/frontend/src/components/ui/today/TodayLabTaskActivityChart.tsx b/frontend/src/components/ui/today/TodayLabTaskActivityChart.tsx
index 2c5d9d2..92da160 100644
--- a/frontend/src/components/ui/today/TodayLabTaskActivityChart.tsx
+++ b/frontend/src/components/ui/today/TodayLabTaskActivityChart.tsx
@@ -17,6 +17,7 @@ import {
   TODAY_CHART_RECEIVED_COLOR,
   TODAY_CHART_TOOLTIP_STYLE,
 } from '@/components/today/chart-theme';
+import { todayChartDenseXAxisProps } from '@/components/today/chart-day-labels';
 import type { TodayStackedDayBucket } from '@/types/today';
 
 export type LabTaskActivityChartRow = {
@@ -36,12 +37,15 @@ export function TodayLabTaskActivityChart({
   completedLabel,
   receivedLabel,
 }: TodayLabTaskActivityChartProps) {
+  const xAxis = todayChartDenseXAxisProps(data.length);
+  const showDots = data.length <= 14;
+
   return (
     <TodayChartFrame>
       <div className="flex h-full min-h-0 flex-col">
         <div className="min-h-0 flex-1">
           <ResponsiveContainer width="100%" height="100%">
-            <AreaChart data={data} margin={{ top: 8, right: 8, left: -12, bottom: 0 }}>
+            <AreaChart data={data} margin={{ top: 8, right: 8, left: -12, bottom: 2 }}>
               <defs>
                 <linearGradient id="labTaskCompletedFill" x1="0" y1="0" x2="0" y2="1">
                   <stop offset="0%" stopColor={TODAY_CHART_COMPLETED_COLOR} stopOpacity={0.4} />
@@ -55,10 +59,11 @@ export function TodayLabTaskActivityChart({
               <CartesianGrid stroke={TODAY_CHART_GRID_COLOR} vertical={false} />
               <XAxis
                 dataKey="label"
-                tick={{ fill: TODAY_CHART_AXIS_COLOR, fontSize: 11 }}
+                tick={{ fill: TODAY_CHART_AXIS_COLOR, fontSize: xAxis.fontSize }}
                 axisLine={{ stroke: TODAY_CHART_GRID_COLOR }}
                 tickLine={false}
-                interval={1}
+                interval={xAxis.interval}
+                minTickGap={xAxis.minTickGap}
               />
               <YAxis
                 allowDecimals={false}
@@ -79,7 +84,7 @@ export function TodayLabTaskActivityChart({
                 stroke={TODAY_CHART_COMPLETED_COLOR}
                 strokeWidth={2}
                 fill="url(#labTaskCompletedFill)"
-                dot={{ r: 3, fill: TODAY_CHART_COMPLETED_COLOR, strokeWidth: 0 }}
+                dot={showDots ? { r: 3, fill: TODAY_CHART_COMPLETED_COLOR, strokeWidth: 0 } : false}
                 activeDot={{ r: 5, fill: TODAY_CHART_COMPLETED_COLOR }}
               />
               <Area
@@ -89,7 +94,7 @@ export function TodayLabTaskActivityChart({
                 stroke={TODAY_CHART_RECEIVED_COLOR}
                 strokeWidth={2}
                 fill="url(#labTaskReceivedFill)"
-                dot={{ r: 3, fill: TODAY_CHART_RECEIVED_COLOR, strokeWidth: 0 }}
+                dot={showDots ? { r: 3, fill: TODAY_CHART_RECEIVED_COLOR, strokeWidth: 0 } : false}
                 activeDot={{ r: 5, fill: TODAY_CHART_RECEIVED_COLOR }}
               />
             </AreaChart>
diff --git a/frontend/src/components/ui/today/TodayPage.tsx b/frontend/src/components/ui/today/TodayPage.tsx
index 0d294dd..ecc55f1 100644
--- a/frontend/src/components/ui/today/TodayPage.tsx
+++ b/frontend/src/components/ui/today/TodayPage.tsx
@@ -18,7 +18,15 @@ export function TodayPage() {
   const tErrors = useTranslations('errors');
   const { currentOrganization } = useAuth();
   const orgId = currentOrganization?.id;
-  const { data, loading, isInitialLoad, error, reload } = useTodaySummary(orgId);
+  const {
+    data,
+    loading,
+    isInitialLoad,
+    error,
+    chartPeriods,
+    setChartPeriod,
+    reload,
+  } = useTodaySummary(orgId);
 
   const showNoSubscriptionNotice = useMemo(
     () => Boolean(currentOrganization?.isOwner) && !currentOrganization?.plan,
@@ -69,6 +77,8 @@ export function TodayPage() {
           charts={data?.charts ?? {}}
           actions={data?.actions ?? {}}
           subscription={data?.subscription}
+          chartPeriods={chartPeriods}
+          onChartPeriodChange={setChartPeriod}
           loading={loading}
           isInitialLoad={isInitialLoad}
           hasError={Boolean(error)}
diff --git a/frontend/src/components/ui/today/TodayPartnerCasesStackedBarChart.tsx b/frontend/src/components/ui/today/TodayPartnerCasesStackedBarChart.tsx
index ffe6042..9e4a4e3 100644
--- a/frontend/src/components/ui/today/TodayPartnerCasesStackedBarChart.tsx
+++ b/frontend/src/components/ui/today/TodayPartnerCasesStackedBarChart.tsx
@@ -55,7 +55,8 @@ export function TodayPartnerCasesStackedBarChart({
                 tick={{ fill: TODAY_CHART_AXIS_COLOR, fontSize: 11 }}
                 axisLine={{ stroke: TODAY_CHART_GRID_COLOR }}
                 tickLine={false}
-                interval={0}
+                interval={chartData.length <= 8 ? 0 : 'preserveStartEnd'}
+                minTickGap={chartData.length > 8 ? 28 : undefined}
               />
               <YAxis
                 allowDecimals={false}
diff --git a/frontend/src/lib/api/today.ts b/frontend/src/lib/api/today.ts
index 34889a7..1d3e73c 100644
--- a/frontend/src/lib/api/today.ts
+++ b/frontend/src/lib/api/today.ts
@@ -1,15 +1,33 @@
 import { apiClient } from './client';
 import type { TodaySummaryResponse } from '@/types/today';
+import type { TodayChartPeriods } from '@/components/today/chart-periods';
 
 export interface TodaySummaryParams {
   from: string;
   to: string;
   utcOffsetMinutes?: number;
+  chartPeriods?: TodayChartPeriods;
+}
+
+function chartPeriodQuery(periods?: TodayChartPeriods) {
+  if (!periods) return {};
+  return {
+    appointmentsWeekPeriod: periods.appointmentsWeekAll,
+    appointmentsWeekMinePeriod: periods.appointmentsWeekMine,
+    labTaskActivityPeriod: periods.labTaskActivity,
+    casesDuePeriod: periods.casesDue,
+    treatmentMixPeriod: periods.treatmentMix,
+    casePartnersPeriod: periods.casePartners,
+    efficiencyPeriod: periods.efficiency,
+  };
 }
 
 export const todayApi = {
   summary: async (params: TodaySummaryParams): Promise<TodaySummaryResponse> => {
-    const response = await apiClient.get('/today/summary', { params });
+    const { chartPeriods, ...range } = params;
+    const response = await apiClient.get('/today/summary', {
+      params: { ...range, ...chartPeriodQuery(chartPeriods) },
+    });
     return response.data;
   },
 };
diff --git a/frontend/src/lib/hooks/useTodaySummary.ts b/frontend/src/lib/hooks/useTodaySummary.ts
index 2fe78ea..ea874b8 100644
--- a/frontend/src/lib/hooks/useTodaySummary.ts
+++ b/frontend/src/lib/hooks/useTodaySummary.ts
@@ -2,6 +2,14 @@
 
 import { useCallback, useEffect, useState } from 'react';
 import { getLocalDayIsoRange } from '@/components/appointments/appointmentTime';
+import {
+  loadTodayChartPeriods,
+  saveTodayChartPeriods,
+  type TodayChartPeriod,
+  type TodayChartPeriodKey,
+  type TodayChartPeriods,
+  TODAY_CHART_PERIOD_DEFAULTS,
+} from '@/components/today/chart-periods';
 import { todayApi } from '@/lib/api/today';
 import type { TodaySummaryData } from '@/types/today';
 import type { ApiError } from '@/types/api';
@@ -11,6 +19,8 @@ interface UseTodaySummaryResult {
   loading: boolean;
   isInitialLoad: boolean;
   error: ApiError | null;
+  chartPeriods: TodayChartPeriods;
+  setChartPeriod: (key: TodayChartPeriodKey, period: TodayChartPeriod) => void;
   reload: () => Promise<void>;
 }
 
@@ -19,6 +29,17 @@ export function useTodaySummary(organizationId?: string | null): UseTodaySummary
   const [data, setData] = useState<TodaySummaryData | null>(null);
   const [loading, setLoading] = useState(enabled);
   const [error, setError] = useState<ApiError | null>(null);
+  const [chartPeriods, setChartPeriods] = useState<TodayChartPeriods>(() =>
+    organizationId ? loadTodayChartPeriods(organizationId) : TODAY_CHART_PERIOD_DEFAULTS,
+  );
+
+  useEffect(() => {
+    if (!organizationId) {
+      setChartPeriods(TODAY_CHART_PERIOD_DEFAULTS);
+      return;
+    }
+    setChartPeriods(loadTodayChartPeriods(organizationId));
+  }, [organizationId]);
 
   const reload = useCallback(async () => {
     if (!organizationId) {
@@ -34,14 +55,18 @@ export function useTodaySummary(organizationId?: string | null): UseTodaySummary
     try {
       const range = getLocalDayIsoRange(new Date());
       const utcOffsetMinutes = -new Date().getTimezoneOffset();
-      const response = await todayApi.summary({ ...range, utcOffsetMinutes });
+      const response = await todayApi.summary({
+        ...range,
+        utcOffsetMinutes,
+        chartPeriods,
+      });
       setData(response.data);
     } catch (err) {
       setError(err as ApiError);
     } finally {
       setLoading(false);
     }
-  }, [organizationId]);
+  }, [organizationId, chartPeriods]);
 
   useEffect(() => {
     setData(null);
@@ -54,11 +79,25 @@ export function useTodaySummary(organizationId?: string | null): UseTodaySummary
     void reload();
   }, [organizationId, reload]);
 
+  const setChartPeriod = useCallback(
+    (key: TodayChartPeriodKey, period: TodayChartPeriod) => {
+      setChartPeriods((prev) => {
+        if (prev[key] === period) return prev;
+        const next = { ...prev, [key]: period };
+        if (organizationId) saveTodayChartPeriods(organizationId, next);
+        return next;
+      });
+    },
+    [organizationId],
+  );
+
   return {
     data,
     loading,
     isInitialLoad: loading && !data,
     error,
+    chartPeriods,
+    setChartPeriod,
     reload,
   };
 }