diff --git a/frontend/src/pages/Dashboard.tsx b/frontend/src/pages/Dashboard.tsx
index 6a7a3fe..c3c9b6f 100644
--- a/frontend/src/pages/Dashboard.tsx
+++ b/frontend/src/pages/Dashboard.tsx
@@ -227,7 +227,9 @@ export default function Dashboard() {
   useEffect(() => {
     load()
     loadStats()
-    const id = setInterval(load, REFRESH_MS)
+    // Both on the same timer — an installed PWA left open for a while previously left the
+    // week/month tiles frozen at whatever they were on first load (only the AI insight refreshed).
+    const id = setInterval(() => { load(); loadStats() }, REFRESH_MS)
     return () => clearInterval(id)
   }, [load, loadStats])
 
diff --git a/frontend/src/pages/Monthly.tsx b/frontend/src/pages/Monthly.tsx
index 8e586bf..50874d6 100644
--- a/frontend/src/pages/Monthly.tsx
+++ b/frontend/src/pages/Monthly.tsx
@@ -23,6 +23,7 @@ function budgetColour(pct: number): string {
   return pct <= 100 ? 'var(--app-primary)' : pct <= 110 ? '#b45309' : '#dc2626'
 }
 const DEPT_COLORS = ['#065f46','#059669','#0891b2','#7c3aed','#c2410c','#b45309','#0f766e','#4338ca','#be185d','#15803d']
+const REFRESH_MS = 5 * 60_000
 
 export default function Monthly() {
   const today        = new Date()
@@ -144,7 +145,14 @@ export default function Monthly() {
     }
   }, [fromStr, toStr, actualsFromStr, pyFromStr, pyToStr, pmFromStr, pmToStr, isCurrentMonth, yesterdayStr, year, month, pyDim])
 
-  useEffect(() => { load() }, [load])
+  useEffect(() => {
+    load()
+    // Only worth polling while viewing the in-progress month — the forecast is the only
+    // thing that moves; past months are static once loaded.
+    if (!isCurrentMonth) return
+    const id = setInterval(load, REFRESH_MS)
+    return () => clearInterval(id)
+  }, [load, isCurrentMonth])
 
   useEffect(() => {
     if (!modal) { setModalEmps(null); return }