diff --git a/backend/database/migrations/2025_12_27_192118_backfill_stripe_payments_currency_from_orders.php b/backend/database/migrations/2025_12_27_192118_backfill_stripe_payments_currency_from_orders.php
new file mode 100644
index 000000000..5babc02f1
--- /dev/null
+++ b/backend/database/migrations/2025_12_27_192118_backfill_stripe_payments_currency_from_orders.php
@@ -0,0 +1,23 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        DB::statement(<<<SQL
+            UPDATE stripe_payments sp
+            SET currency = o.currency
+            FROM orders o
+            WHERE sp.order_id = o.id
+            AND sp.currency IS NULL
+        SQL);
+    }
+
+    public function down(): void
+    {
+        // Cannot reverse - we don't know which records had null currency before
+    }
+};