diff --git a/src/renderer/inbox/App.tsx b/src/renderer/inbox/App.tsx
index 2451227..ae1cdcb 100644
--- a/src/renderer/inbox/App.tsx
+++ b/src/renderer/inbox/App.tsx
@@ -9,6 +9,7 @@ import { PendingBanner } from './components/PendingBanner.js';
 import { OllamaBanner } from './components/OllamaBanner.js';
 import { RecoveryToast } from './components/RecoveryToast.js';
 import { TagUndoToast } from './components/TagUndoToast.js';
+import { ExpiryBanner } from './components/ExpiryBanner.js';
 
 export function App(): React.ReactElement {
   const {
@@ -77,6 +78,7 @@ export function App(): React.ReactElement {
               onDismiss={() => { markRecoveryDismissed(); setRecoveryDismissed(true); }}
             />
             <PendingBanner />
+            <ExpiryBanner />
             {tagFilter !== null && (
               <div style={{
                 background: '#eaf3ff', color: '#0a4b80', padding: '6px 12px',
diff --git a/src/renderer/inbox/components/ExpiryBanner.tsx b/src/renderer/inbox/components/ExpiryBanner.tsx
new file mode 100644
index 0000000..9dcd3b6
--- /dev/null
+++ b/src/renderer/inbox/components/ExpiryBanner.tsx
@@ -0,0 +1,147 @@
+import React, { useEffect, useState } from 'react';
+import { useInbox } from '../store.js';
+
+export function ExpiryBanner(): React.ReactElement | null {
+  const candidates = useInbox((s) => s.expiredCandidates);
+  const snoozeUntilMs = useInbox((s) => s.expiredSnoozeUntilMs);
+  const trashExpiredBatch = useInbox((s) => s.trashExpiredBatch);
+  const snoozeExpired = useInbox((s) => s.snoozeExpired);
+
+  // Q5=A: 0건 / snooze 활성 시 collapse
+  if (candidates.length === 0) return null;
+  if (snoozeUntilMs !== null && Date.now() < snoozeUntilMs) return null;
+
+  return <ExpiryBannerInner
+    candidates={candidates}
+    onTrash={(ids) => void trashExpiredBatch(ids)}
+    onSnooze={() => snoozeExpired()}
+  />;
+}
+
+interface InnerProps {
+  candidates: Array<{
+    id: string;
+    aiTitle: string | null;
+    rawText: string;
+    dueDate: string | null;
+    tags: Array<{ name: string }>
+  }>;
+  onTrash: (ids: string[]) => void;
+  onSnooze: () => void;
+}
+
+function ExpiryBannerInner({ candidates, onTrash, onSnooze }: InnerProps): React.ReactElement {
+  const [expanded, setExpanded] = useState<boolean>(true);
+  const [selected, setSelected] = useState<Set<string>>(new Set());
+
+  // candidates 가 변하면 selected 의 stale id 정리
+  useEffect(() => {
+    const valid = new Set(candidates.map((c) => c.id));
+    setSelected((prev) => {
+      const next = new Set<string>();
+      for (const id of prev) if (valid.has(id)) next.add(id);
+      return next;
+    });
+  }, [candidates]);
+
+  const allSelected = candidates.length > 0 && candidates.every((c) => selected.has(c.id));
+  const someSelected = selected.size > 0 && !allSelected;
+
+  function toggleAll() {
+    if (allSelected) setSelected(new Set());
+    else setSelected(new Set(candidates.map((c) => c.id)));
+  }
+
+  function toggle(id: string) {
+    setSelected((prev) => {
+      const next = new Set(prev);
+      if (next.has(id)) next.delete(id);
+      else next.add(id);
+      return next;
+    });
+  }
+
+  return (
+    <div style={{
+      background: '#fff7e6', border: '1px solid #d99500', borderRadius: 6,
+      padding: '8px 12px', margin: '8px 0', fontSize: 13
+    }}>
+      <div style={{ display: 'flex', alignItems: 'center', gap: 8 }}>
+        <span>⏰ <b>오늘 기준 만료 {candidates.length}개</b></span>
+        <button
+          onClick={() => setExpanded((e) => !e)}
+          style={{ background: 'none', border: 'none', cursor: 'pointer', color: '#946100' }}
+          aria-expanded={expanded}
+        >
+          {expanded ? '▲ 접기' : '▼ 펼치기'}
+        </button>
+        <button
+          onClick={onSnooze}
+          style={{
+            marginLeft: 'auto',
+            background: 'transparent', color: '#946100',
+            border: '1px solid #d99500', borderRadius: 4,
+            padding: '2px 8px', fontSize: 12, cursor: 'pointer'
+          }}
+        >
+          오늘 그만
+        </button>
+      </div>
+      {expanded && (
+        <>
+          <label style={{ display: 'flex', alignItems: 'center', gap: 6, margin: '8px 0 4px', cursor: 'pointer' }}>
+            <input
+              type="checkbox"
+              checked={allSelected}
+              ref={(el) => { if (el) el.indeterminate = someSelected; }}
+              onChange={toggleAll}
+            />
+            <span style={{ color: '#666' }}>전체 선택 ({selected.size}/{candidates.length})</span>
+          </label>
+          <div>
+            {candidates.map((n) => (
+              <label
+                key={n.id}
+                style={{
+                  display: 'flex', alignItems: 'center', gap: 8,
+                  padding: '4px 0', cursor: 'pointer'
+                }}
+              >
+                <input
+                  type="checkbox"
+                  checked={selected.has(n.id)}
+                  onChange={() => toggle(n.id)}
+                />
+                <span style={{ flex: 1, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>
+                  {n.aiTitle ?? n.rawText.slice(0, 60)}
+                </span>
+                <span style={{ color: '#946100', fontSize: 12 }}>due {n.dueDate}</span>
+                {n.tags[0] && (
+                  <span style={{
+                    background: '#fce8b2', color: '#946100', padding: '0 6px',
+                    borderRadius: 10, fontSize: 11
+                  }}>
+                    #{n.tags[0].name}
+                  </span>
+                )}
+              </label>
+            ))}
+          </div>
+          <button
+            onClick={() => onTrash(Array.from(selected))}
+            disabled={selected.size === 0}
+            style={{
+              marginTop: 8,
+              background: selected.size === 0 ? '#999' : '#a33', color: '#fff',
+              border: 'none', borderRadius: 4,
+              padding: '4px 12px', fontSize: 12,
+              cursor: selected.size === 0 ? 'not-allowed' : 'pointer'
+            }}
+          >
+            선택 휴지통 ({selected.size}개)
+          </button>
+        </>
+      )}
+    </div>
+  );
+}