diff --git a/app/modules/expense/router.py b/app/modules/expense/router.py
index 9c894bb..a2a1487 100644
--- a/app/modules/expense/router.py
+++ b/app/modules/expense/router.py
@@ -279,11 +279,15 @@ async def expense_index(request: Request) -> HTMLResponse:
         )
 
     store = _store(request)
-    items = sorted(
+    all_items = sorted(
         store.list_for(user["email"]),
         key=lambda i: (i.get("spent_at", ""), i.get("created_at", "")),
         reverse=True,
     )
+    # 선택한 월(사용일 기준)만 표시. 기본 = 이번 달.
+    _, _, month = _parse_month(request)
+    items = [it for it in all_items if str(it.get("spent_at", ""))[:7] == month]
+    month_total = sum(int(i.get("amount", 0)) for i in items)
     summary = store.summary_for(user["email"])
     pending_count = 0
     is_approver = is_admin(user) or has_module(user, "expense_approver")
@@ -300,6 +304,8 @@ async def expense_index(request: Request) -> HTMLResponse:
             "pending_count": pending_count,
             "items": items,
             "summary": summary,
+            "month": month,
+            "month_total": month_total,
             "categories": _categories(request),
             "methods": list(METHODS),
             "statuses": list(STATUSES),
diff --git a/app/modules/expense/templates/expense/index.html b/app/modules/expense/templates/expense/index.html
index 962f90d..147760d 100644
--- a/app/modules/expense/templates/expense/index.html
+++ b/app/modules/expense/templates/expense/index.html
@@ -5,7 +5,6 @@
 
   <!-- ── 페이지 액션 ── -->
   <div class="erp-page-actions">
-    <a class="erp-btn erp-btn-outline" href="/expense/reports">월별 집계</a>
     {% if is_approver %}
     <a class="erp-btn erp-btn-outline" href="/expense/pending">
       승인 대기 {% if pending_count %}<strong style="margin-left:6px;">{{ pending_count }}</strong>{% endif %}
@@ -85,8 +84,12 @@
   <div class="erp-card-block">
     <div class="erp-card-block-head">
       <h2>경비 내역</h2>
-      <div style="display: flex; align-items: center; gap: var(--sp-12);">
+      <div style="display: flex; align-items: center; gap: var(--sp-12); flex-wrap: wrap;">
+        <form method="get" action="/expense/" id="ex-month-form" style="display:flex; gap:var(--sp-8); align-items:center; margin:0;">
+          <input type="month" name="month" value="{{ month }}" />
+        </form>
         <span class="erp-muted" id="ex-count">{{ items | length }}건</span>
+        <span class="erp-muted">합계 <strong>{{ "{:,}".format(month_total) }}</strong> 원</span>
         {% if supports_workflow %}
         <button id="ex-bulk-submit" class="erp-btn erp-btn-primary erp-btn-sm" disabled>
           선택 항목 제출 (<span id="ex-bulk-count">0</span>)
@@ -412,6 +415,10 @@
     const d = new Date();
     form.spent_at.value = `${d.getFullYear()}-${String(d.getMonth()+1).padStart(2,"0")}-${String(d.getDate()).padStart(2,"0")}`;
   }
+
+  // 월 선택 변경 시 자동 조회
+  const monthInput = document.querySelector('#ex-month-form input[name="month"]');
+  if (monthInput) monthInput.addEventListener("change", () => monthInput.form.submit());
 })();
 </script>
 {% endblock %}