diff --git a/app/Enums/Invoice/InvoiceStep.php b/app/Enums/Invoice/InvoiceStep.php
new file mode 100644
index 0000000..424a844
--- /dev/null
+++ b/app/Enums/Invoice/InvoiceStep.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Enums\Invoice;
+
+enum InvoiceStep: int
+{
+    case STEP_1 = 1;
+    case STEP_2 = 2;
+    case STEP_3 = 3;
+    case STEP_4 = 4;
+    case STEP_5 = 5;
+
+    public function label(): string
+    {
+        return match ($this) {
+            self::STEP_1 => '1 ngày trước khi hết hạn',
+            self::STEP_2 => '3 ngày trước khi hết hạn',
+            self::STEP_3 => '7 ngày trước khi hết hạn',
+            self::STEP_4 => '14 ngày trước khi hết hạn',
+            self::STEP_5 => '30 ngày trước khi hết hạn',
+        };
+    }
+}
diff --git a/database/migrations/2024_01_31_155824_invoice.php b/database/migrations/2024_01_31_155824_invoice.php
index 811fc7a..a20676e 100644
--- a/database/migrations/2024_01_31_155824_invoice.php
+++ b/database/migrations/2024_01_31_155824_invoice.php
@@ -28,6 +28,7 @@ return new class extends Migration {
             $table->string('vm_id')->nullable()->index();
             $table->unsignedInteger('rebuild_count')->nullable()->default(0);
             $table->tinyInteger('invoice_type')->default(1);
+            $table->integer('reminder_step')->default(3);
             $table->tinyInteger('status')->default(0);
 
             $table->timestamps();
diff --git a/database/migrations/2026_03_02_111537_update_column_invoice_table.php b/database/migrations/2026_03_02_111537_update_column_invoice_table.php
new file mode 100644
index 0000000..cc26cea
--- /dev/null
+++ b/database/migrations/2026_03_02_111537_update_column_invoice_table.php
@@ -0,0 +1,29 @@
+<?php
+
+use App\Enums\Invoice\InvoiceStep;
+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('invoice', function (Blueprint $table) {
+            //
+            $table->enum('reminder_step', [InvoiceStep::STEP_1->value, InvoiceStep::STEP_2->value, InvoiceStep::STEP_3->value, InvoiceStep::STEP_4->value, InvoiceStep::STEP_5->value])->default(InvoiceStep::STEP_1->value)->after('auto_renew');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('invoice', function (Blueprint $table) {
+            //
+        });
+    }
+};