diff --git a/src/main/java/net/javahippie/fitpub/controller/AnalyticsController.java b/src/main/java/net/javahippie/fitpub/controller/AnalyticsController.java
index e5c40eb..59d87e4 100644
--- a/src/main/java/net/javahippie/fitpub/controller/AnalyticsController.java
+++ b/src/main/java/net/javahippie/fitpub/controller/AnalyticsController.java
@@ -284,6 +284,23 @@ public class AnalyticsController {
         return ResponseEntity.ok(summary);
     }
 
+    /**
+     * Get current year summary.
+     */
+    @GetMapping("/summaries/current-year")
+    public ResponseEntity<ActivitySummary> getCurrentYearSummary(
+            @AuthenticationPrincipal UserDetails userDetails) {
+
+        UUID userId = getUserId(userDetails);
+        ActivitySummary summary = activitySummaryService.getCurrentYearSummary(userId);
+
+        if (summary == null) {
+            return ResponseEntity.notFound().build();
+        }
+
+        return ResponseEntity.ok(summary);
+    }
+
     /**
      * Get form status description.
      */
diff --git a/src/main/java/net/javahippie/fitpub/service/ActivitySummaryService.java b/src/main/java/net/javahippie/fitpub/service/ActivitySummaryService.java
index c41439f..807335e 100644
--- a/src/main/java/net/javahippie/fitpub/service/ActivitySummaryService.java
+++ b/src/main/java/net/javahippie/fitpub/service/ActivitySummaryService.java
@@ -268,6 +268,22 @@ public class ActivitySummaryService {
         );
     }
 
+    /**
+     * Get current year summary.
+     */
+    @Transactional
+    public ActivitySummary getCurrentYearSummary(UUID userId) {
+        LocalDate yearStart = LocalDate.now().with(TemporalAdjusters.firstDayOfYear());
+        LocalDate yearEndExclusive = yearStart.plusYears(1);
+        return getOrBuildCurrentSummary(
+                userId,
+                ActivitySummary.PeriodType.YEAR,
+                yearStart,
+                yearEndExclusive,
+                () -> updateYearlySummary(userId, yearStart)
+        );
+    }
+
     private ActivitySummary getOrBuildCurrentSummary(
             UUID userId,
             ActivitySummary.PeriodType periodType,
@@ -275,16 +291,6 @@ public class ActivitySummaryService {
             LocalDate periodEndExclusive,
             Runnable rebuildAction
     ) {
-        ActivitySummary existingSummary = activitySummaryRepository.findByUserIdAndPeriodTypeAndPeriodStart(
-                userId,
-                periodType,
-                periodStart
-        ).orElse(null);
-
-        if (existingSummary != null) {
-            return existingSummary;
-        }
-
         boolean hasActivitiesInPeriod = activityRepository.existsByUserIdAndStartedAtBetween(
                 userId,
                 periodStart.atStartOfDay(),
@@ -292,7 +298,11 @@ public class ActivitySummaryService {
         );
 
         if (!hasActivitiesInPeriod) {
-            return null;
+            return activitySummaryRepository.findByUserIdAndPeriodTypeAndPeriodStart(
+                    userId,
+                    periodType,
+                    periodStart
+            ).orElse(null);
         }
 
         rebuildAction.run();
diff --git a/src/test/java/net/javahippie/fitpub/service/ActivitySummaryServiceTest.java b/src/test/java/net/javahippie/fitpub/service/ActivitySummaryServiceTest.java
index 64ea742..933fed5 100644
--- a/src/test/java/net/javahippie/fitpub/service/ActivitySummaryServiceTest.java
+++ b/src/test/java/net/javahippie/fitpub/service/ActivitySummaryServiceTest.java
@@ -215,4 +215,116 @@ class ActivitySummaryServiceTest {
         assertNull(result);
         verify(activityRepository).existsByUserIdAndStartedAtBetween(userId, startDateTime, endDateTime);
     }
+
+    @Test
+    @DisplayName("Should rebuild stale current month summary when activities exist")
+    void getCurrentMonthSummary_RebuildsExistingStaleSummary() {
+        LocalDate monthStart = LocalDate.now().withDayOfMonth(1);
+        LocalDateTime startDateTime = monthStart.atStartOfDay();
+        LocalDateTime endDateTime = monthStart.plusMonths(1).atStartOfDay();
+
+        Activity activity = Activity.builder()
+                .id(UUID.randomUUID())
+                .userId(userId)
+                .activityType(Activity.ActivityType.RUN)
+                .startedAt(startDateTime.plusDays(3).plusHours(6))
+                .endedAt(startDateTime.plusDays(3).plusHours(7))
+                .totalDistance(BigDecimal.valueOf(12000))
+                .totalDurationSeconds(4200L)
+                .elevationGain(BigDecimal.valueOf(200))
+                .build();
+
+        ActivitySummary rebuiltSummary = ActivitySummary.builder()
+                .userId(userId)
+                .periodType(ActivitySummary.PeriodType.MONTH)
+                .periodStart(monthStart)
+                .periodEnd(monthStart.plusMonths(1).minusDays(1))
+                .activityCount(1)
+                .build();
+
+        when(activityRepository.existsByUserIdAndStartedAtBetween(userId, startDateTime, endDateTime))
+                .thenReturn(true);
+        when(activityRepository.findByUserIdAndStartedAtBetweenOrderByStartedAtDesc(userId, startDateTime, endDateTime))
+                .thenReturn(List.of(activity));
+        when(personalRecordRepository.countByUserIdAndDateRange(userId, startDateTime, endDateTime)).thenReturn(0L);
+        when(achievementRepository.countByUserIdAndActivityStartedDateRange(userId, startDateTime, endDateTime)).thenReturn(0L);
+        when(activitySummaryRepository.findByUserIdAndPeriodTypeAndPeriodStart(
+                userId,
+                ActivitySummary.PeriodType.MONTH,
+                monthStart
+        )).thenReturn(
+                Optional.of(ActivitySummary.builder()
+                        .userId(userId)
+                        .periodType(ActivitySummary.PeriodType.MONTH)
+                        .periodStart(monthStart)
+                        .periodEnd(monthStart.plusMonths(1).minusDays(1))
+                        .activityCount(0)
+                        .build()),
+                Optional.of(rebuiltSummary)
+        );
+        when(activitySummaryRepository.save(any(ActivitySummary.class)))
+                .thenAnswer(invocation -> invocation.getArgument(0));
+
+        ActivitySummary result = activitySummaryService.getCurrentMonthSummary(userId);
+
+        assertNotNull(result);
+        assertEquals(1, result.getActivityCount());
+        verify(activitySummaryRepository).save(any(ActivitySummary.class));
+    }
+
+    @Test
+    @DisplayName("Should rebuild stale current year summary when activities exist")
+    void getCurrentYearSummary_RebuildsExistingStaleSummary() {
+        LocalDate yearStart = LocalDate.now().withDayOfYear(1);
+        LocalDateTime startDateTime = yearStart.atStartOfDay();
+        LocalDateTime endDateTime = yearStart.plusYears(1).atStartOfDay();
+
+        Activity activity = Activity.builder()
+                .id(UUID.randomUUID())
+                .userId(userId)
+                .activityType(Activity.ActivityType.RIDE)
+                .startedAt(startDateTime.plusDays(20).plusHours(9))
+                .endedAt(startDateTime.plusDays(20).plusHours(11))
+                .totalDistance(BigDecimal.valueOf(65000))
+                .totalDurationSeconds(7200L)
+                .elevationGain(BigDecimal.valueOf(900))
+                .build();
+
+        ActivitySummary rebuiltSummary = ActivitySummary.builder()
+                .userId(userId)
+                .periodType(ActivitySummary.PeriodType.YEAR)
+                .periodStart(yearStart)
+                .periodEnd(yearStart.plusYears(1).minusDays(1))
+                .activityCount(1)
+                .build();
+
+        when(activityRepository.existsByUserIdAndStartedAtBetween(userId, startDateTime, endDateTime))
+                .thenReturn(true);
+        when(activityRepository.findByUserIdAndStartedAtBetweenOrderByStartedAtDesc(userId, startDateTime, endDateTime))
+                .thenReturn(List.of(activity));
+        when(personalRecordRepository.countByUserIdAndDateRange(userId, startDateTime, endDateTime)).thenReturn(0L);
+        when(achievementRepository.countByUserIdAndActivityStartedDateRange(userId, startDateTime, endDateTime)).thenReturn(0L);
+        when(activitySummaryRepository.findByUserIdAndPeriodTypeAndPeriodStart(
+                userId,
+                ActivitySummary.PeriodType.YEAR,
+                yearStart
+        )).thenReturn(
+                Optional.of(ActivitySummary.builder()
+                        .userId(userId)
+                        .periodType(ActivitySummary.PeriodType.YEAR)
+                        .periodStart(yearStart)
+                        .periodEnd(yearStart.plusYears(1).minusDays(1))
+                        .activityCount(0)
+                        .build()),
+                Optional.of(rebuiltSummary)
+        );
+        when(activitySummaryRepository.save(any(ActivitySummary.class)))
+                .thenAnswer(invocation -> invocation.getArgument(0));
+
+        ActivitySummary result = activitySummaryService.getCurrentYearSummary(userId);
+
+        assertNotNull(result);
+        assertEquals(1, result.getActivityCount());
+        verify(activitySummaryRepository).save(any(ActivitySummary.class));
+    }
 }