diff --git a/database/migrations/2026_01_28_163000_add_tenant_id_to_credit_inquiries_table.php b/database/migrations/2026_01_28_163000_add_tenant_id_to_credit_inquiries_table.php
new file mode 100644
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+++ b/database/migrations/2026_01_28_163000_add_tenant_id_to_credit_inquiries_table.php
@@ -0,0 +1,26 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('credit_inquiries', function (Blueprint $table) {
+            $table->unsignedBigInteger('tenant_id')->nullable()->after('id');
+            $table->index('tenant_id');
+            $table->index(['tenant_id', 'inquired_at']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('credit_inquiries', function (Blueprint $table) {
+            $table->dropIndex(['tenant_id', 'inquired_at']);
+            $table->dropIndex(['tenant_id']);
+            $table->dropColumn('tenant_id');
+        });
+    }
+};