diff --git a/app/Http/Requests/V1/Sale/UpdateSaleRequest.php b/app/Http/Requests/V1/Sale/UpdateSaleRequest.php
index 565632a..11d69b8 100644
--- a/app/Http/Requests/V1/Sale/UpdateSaleRequest.php
+++ b/app/Http/Requests/V1/Sale/UpdateSaleRequest.php
@@ -21,6 +21,8 @@ public function rules(): array
             'total_amount' => ['sometimes', 'numeric', 'min:0'],
             'description' => ['nullable', 'string', 'max:1000'],
             'deposit_id' => ['nullable', 'integer', 'exists:deposits,id'],
+            'tax_invoice_issued' => ['sometimes', 'boolean'],
+            'transaction_statement_issued' => ['sometimes', 'boolean'],
         ];
     }
 
diff --git a/app/Models/Tenants/Sale.php b/app/Models/Tenants/Sale.php
index d285973..0520579 100644
--- a/app/Models/Tenants/Sale.php
+++ b/app/Models/Tenants/Sale.php
@@ -21,6 +21,8 @@ class Sale extends Model
         'total_amount',
         'description',
         'status',
+        'tax_invoice_issued',
+        'transaction_statement_issued',
         'tax_invoice_id',
         'deposit_id',
         'created_by',
@@ -29,11 +31,13 @@ class Sale extends Model
     ];
 
     protected $casts = [
-        'sale_date' => 'date',
+        'sale_date' => 'date:Y-m-d',
         'supply_amount' => 'decimal:2',
         'tax_amount' => 'decimal:2',
         'total_amount' => 'decimal:2',
         'client_id' => 'integer',
+        'tax_invoice_issued' => 'boolean',
+        'transaction_statement_issued' => 'boolean',
         'tax_invoice_id' => 'integer',
         'deposit_id' => 'integer',
     ];
diff --git a/app/Services/SaleService.php b/app/Services/SaleService.php
index 985a3da..3f3f77a 100644
--- a/app/Services/SaleService.php
+++ b/app/Services/SaleService.php
@@ -117,8 +117,12 @@ public function update(int $id, array $data): Sale
                 ->where('tenant_id', $tenantId)
                 ->findOrFail($id);
 
-            // 확정 후에는 수정 불가
-            if (! $sale->canEdit()) {
+            // 토글 필드만 업데이트하는 경우는 canEdit 체크 건너뛰기
+            $toggleOnlyFields = ['tax_invoice_issued', 'transaction_statement_issued'];
+            $isToggleOnly = count(array_diff(array_keys($data), $toggleOnlyFields)) === 0;
+
+            // 확정 후에는 수정 불가 (토글 필드만 업데이트하는 경우 제외)
+            if (! $isToggleOnly && ! $sale->canEdit()) {
                 throw new \Exception(__('error.sale.cannot_edit'));
             }
 
@@ -143,6 +147,12 @@ public function update(int $id, array $data): Sale
             if (array_key_exists('deposit_id', $data)) {
                 $sale->deposit_id = $data['deposit_id'];
             }
+            if (array_key_exists('tax_invoice_issued', $data)) {
+                $sale->tax_invoice_issued = $data['tax_invoice_issued'];
+            }
+            if (array_key_exists('transaction_statement_issued', $data)) {
+                $sale->transaction_statement_issued = $data['transaction_statement_issued'];
+            }
 
             $sale->updated_by = $userId;
             $sale->save();
diff --git a/database/migrations/2025_12_24_151437_add_invoice_flags_to_sales_table.php b/database/migrations/2025_12_24_151437_add_invoice_flags_to_sales_table.php
new file mode 100644
index 0000000..78e9793
--- /dev/null
+++ b/database/migrations/2025_12_24_151437_add_invoice_flags_to_sales_table.php
@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('sales', function (Blueprint $table) {
+            $table->boolean('tax_invoice_issued')->default(false)->after('status')->comment('세금계산서 발행완료');
+            $table->boolean('transaction_statement_issued')->default(false)->after('tax_invoice_issued')->comment('거래명세서 발행완료');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('sales', function (Blueprint $table) {
+            $table->dropColumn(['tax_invoice_issued', 'transaction_statement_issued']);
+        });
+    }
+};