diff --git a/resources/views/finance/journal-entries.blade.php b/resources/views/finance/journal-entries.blade.php
index 96a5f6cc..e695a65f 100644
--- a/resources/views/finance/journal-entries.blade.php
+++ b/resources/views/finance/journal-entries.blade.php
@@ -59,6 +59,7 @@
 const Calendar = createIcon('calendar');
 const CreditCard = createIcon('credit-card');
 const Lock = createIcon('lock');
+const Copy = createIcon('copy');
 
 const CSRF_TOKEN = document.querySelector('meta[name="csrf-token"]')?.getAttribute('content');
 
@@ -1463,6 +1464,9 @@ className="p-1 text-stone-300 group-hover:text-emerald-500 hover:bg-emerald-50 r
     const [existingEntryNo, setExistingEntryNo] = useState('');
     const [showAddPartnerModal, setShowAddPartnerModal] = useState(false);
     const [addPartnerLineIndex, setAddPartnerLineIndex] = useState(null);
+    const [isCopyMode, setIsCopyMode] = useState(false);
+    const [showCopyDialog, setShowCopyDialog] = useState(false);
+    const [copyDate, setCopyDate] = useState(getKoreanDate());
 
     const getDefaultLines = () => [
         { key: Date.now(), dc_type: 'debit', account_code: '', account_name: '', trading_partner_id: null, trading_partner_name: '', debit_amount: 0, credit_amount: 0, description: '' },
@@ -1481,8 +1485,8 @@ className="p-1 text-stone-300 group-hover:text-emerald-500 hover:bg-emerald-50 r
     };
 
     useEffect(() => {
-        if (!isEditMode) fetchPreviewEntryNo(entryDate);
-    }, [entryDate]);
+        if (!isEditMode || isCopyMode) fetchPreviewEntryNo(entryDate);
+    }, [entryDate, isCopyMode]);
 
     // 수정 모드: 기존 전표 로드
     useEffect(() => {
@@ -1558,8 +1562,8 @@ className="p-1 text-stone-300 group-hover:text-emerald-500 hover:bg-emerald-50 r
                 })),
             };
 
-            const url = isEditMode ? `/finance/journal-entries/${entryId}` : '/finance/journal-entries/store';
-            const method = isEditMode ? 'PUT' : 'POST';
+            const url = (isEditMode && !isCopyMode) ? `/finance/journal-entries/${entryId}` : '/finance/journal-entries/store';
+            const method = (isEditMode && !isCopyMode) ? 'PUT' : 'POST';
 
             const res = await fetch(url, {
                 method, headers: { 'Content-Type': 'application/json', 'Accept': 'application/json', 'X-CSRF-TOKEN': CSRF_TOKEN },
@@ -1579,7 +1583,7 @@ className="p-1 text-stone-300 group-hover:text-emerald-500 hover:bg-emerald-50 r
             const data = await res.json();
 
             if (data.success) {
-                notify(data.message || (isEditMode ? '전표가 수정되었습니다.' : '전표가 저장되었습니다.'), 'success');
+                notify(data.message || (isCopyMode ? '전표가 복사되었습니다.' : isEditMode ? '전표가 수정되었습니다.' : '전표가 저장되었습니다.'), 'success');
                 onSaved();
             } else {
                 notify(data.message || '저장 실패', 'error');
@@ -1609,13 +1613,25 @@ className="p-1 text-stone-300 group-hover:text-emerald-500 hover:bg-emerald-50 r
         }
     };
 
+    const handleCopyClick = () => {
+        setShowCopyDialog(true);
+        setCopyDate(getKoreanDate());
+    };
+
+    const confirmCopy = () => {
+        setIsCopyMode(true);
+        setShowCopyDialog(false);
+        setEntryDate(copyDate);
+        fetchPreviewEntryNo(copyDate);
+    };
+
     return (
         <div className="fixed inset-0 bg-black/50 flex items-center justify-center z-50">
             <div className="bg-white rounded-2xl shadow-2xl w-full max-w-6xl mx-4 min-h-[80vh] max-h-[95vh] flex flex-col overflow-hidden">
                 {/* 헤더 */}
                 <div className="px-6 py-4 border-b border-stone-100 flex items-center justify-between flex-shrink-0">
                     <h3 className="text-lg font-bold text-stone-900">
-                        {isEditMode ? `전표 수정 (${existingEntryNo})` : '수동 전표 생성'}
+                        {isCopyMode ? `전표 복사 (원본: ${existingEntryNo})` : isEditMode ? `전표 수정 (${existingEntryNo})` : '수동 전표 생성'}
                     </h3>
                     <button onClick={onClose} className="p-2 hover:bg-stone-100 rounded-lg transition-colors">
                         <X className="w-5 h-5 text-stone-500" />
@@ -1642,7 +1658,7 @@ className="w-full px-3 py-2 text-sm border border-stone-200 rounded-lg focus:rin
                                     <div>
                                         <label className="block text-xs font-medium text-stone-500 mb-1">전표번호</label>
                                         <div className="w-full px-3 py-2 text-sm bg-white border border-stone-200 rounded-lg text-stone-500 font-mono">
-                                            {isEditMode ? existingEntryNo : (previewEntryNo || '자동 생성')}
+                                            {isCopyMode ? (previewEntryNo || '자동 생성') : isEditMode ? existingEntryNo : (previewEntryNo || '자동 생성')}
                                         </div>
                                     </div>
                                     <div>
@@ -1773,19 +1789,25 @@ className={`p-1 rounded ${lines.length <= 2 ? 'text-stone-200 cursor-not-allowed
 
                 {/* 하단 버튼 */}
                 <div className="px-6 py-4 border-t border-stone-100 flex justify-between flex-shrink-0">
-                    <div>
-                        {isEditMode && (
+                    <div className="flex gap-2">
+                        {isEditMode && !isCopyMode && (
                             <button onClick={handleDelete} disabled={saving}
                                 className="px-4 py-2 bg-red-50 text-red-600 rounded-lg text-sm font-medium hover:bg-red-100 transition-colors disabled:opacity-50">
                                 <Trash2 className="w-4 h-4 inline mr-1" /> 삭제
                             </button>
                         )}
+                        {isEditMode && !isCopyMode && (
+                            <button onClick={handleCopyClick} disabled={saving}
+                                className="px-4 py-2 bg-blue-50 text-blue-600 rounded-lg text-sm font-medium hover:bg-blue-100 transition-colors disabled:opacity-50">
+                                <Copy className="w-4 h-4 inline mr-1" /> 복사
+                            </button>
+                        )}
                     </div>
                     <div className="flex gap-2">
                         <button onClick={onClose} className="px-4 py-2 text-sm text-stone-600 bg-stone-100 rounded-lg hover:bg-stone-200 transition-colors">취소</button>
                         <button onClick={handleSave} disabled={!isBalanced || saving}
                             className={`px-6 py-2 text-sm font-medium rounded-lg flex items-center gap-1 transition-colors ${isBalanced && !saving ? 'bg-emerald-600 text-white hover:bg-emerald-700' : 'bg-stone-200 text-stone-400 cursor-not-allowed'}`}>
-                            <Save className="w-4 h-4" /> {saving ? '저장 중...' : isEditMode ? '수정' : '저장'}
+                            <Save className="w-4 h-4" /> {saving ? '저장 중...' : isCopyMode ? '복사 저장' : isEditMode ? '수정' : '저장'}
                         </button>
                     </div>
                 </div>
@@ -1809,6 +1831,25 @@ className={`px-6 py-2 text-sm font-medium rounded-lg flex items-center gap-1 tra
                     setAddPartnerLineIndex(null);
                 }}
             />
+
+            {/* 전표 복사 일자 선택 다이얼로그 */}
+            {showCopyDialog && (
+                <div className="fixed inset-0 bg-black/30 flex items-center justify-center" style={{ zIndex: 60 }}>
+                    <div className="bg-white rounded-xl shadow-lg p-6" style={{ width: '320px' }}>
+                        <h4 className="text-sm font-bold text-stone-800 mb-1">전표 복사</h4>
+                        <p className="text-xs text-stone-500 mb-4">복사할 전표의 일자를 선택하세요. 전표번호는 해당 일자 기준으로 자동 생성됩니다.</p>
+                        <label className="block text-xs font-medium text-stone-500 mb-1">복사 일자</label>
+                        <input type="date" value={copyDate} onChange={(e) => setCopyDate(e.target.value)}
+                            className="w-full px-3 py-2 text-sm border border-stone-200 rounded-lg focus:ring-2 focus:ring-blue-500 outline-none mb-4" />
+                        <div className="flex justify-end gap-2">
+                            <button onClick={() => setShowCopyDialog(false)}
+                                className="px-4 py-2 text-sm text-stone-600 bg-stone-100 rounded-lg hover:bg-stone-200 transition-colors">취소</button>
+                            <button onClick={confirmCopy} disabled={!copyDate}
+                                className="px-4 py-2 text-sm font-medium bg-blue-600 text-white rounded-lg hover:bg-blue-700 transition-colors disabled:opacity-50">복사하기</button>
+                        </div>
+                    </div>
+                </div>
+            )}
         </div>
     );
 };