diff --git a/mac/Sources/CodeBurnMenubar/Views/AgentTabStrip.swift b/mac/Sources/CodeBurnMenubar/Views/AgentTabStrip.swift
index e4522dd..cb0ad1c 100644
--- a/mac/Sources/CodeBurnMenubar/Views/AgentTabStrip.swift
+++ b/mac/Sources/CodeBurnMenubar/Views/AgentTabStrip.swift
@@ -25,9 +25,9 @@ struct AgentTabStrip: View {
         }
     }
 
-    /// Drive tab visibility and per-tab cost labels from the *all-provider* payload (today),
-    /// not the currently selected provider's payload. Without this, switching to Codex (which
-    /// has no data) would hide every other tab including Claude.
+    /// Drive tab VISIBILITY from the all-provider today payload so tabs don't disappear
+    /// when switching periods or to a provider with no data. Cost values come from
+    /// store.payload (the selected period) via cost(for:).
     private var allProvidersToday: MenubarPayload {
         store.todayPayload ?? store.payload
     }
@@ -46,13 +46,16 @@ struct AgentTabStrip: View {
         }
     }
 
+    /// Cost for the selected period, not pinned to today. The hero shows payload.current.cost,
+    /// so these tabs must match. Tab VISIBILITY is still driven by todayPayload (via
+    /// visibleFilters) so that tabs don't disappear when switching periods.
     private func cost(for filter: ProviderFilter) -> Double? {
         switch filter {
         case .all:
-            return allProvidersToday.current.cost
+            return store.payload.current.cost
         default:
             let key = filter.rawValue.lowercased()
-            return allProvidersToday.current.providers[key]
+            return store.payload.current.providers[key]
         }
     }
 }