diff --git a/app/Http/Controllers/ConcertOrdersController.php b/app/Http/Controllers/ConcertOrdersController.php
index 6ebf822..ff53004 100644
--- a/app/Http/Controllers/ConcertOrdersController.php
+++ b/app/Http/Controllers/ConcertOrdersController.php
@@ -33,7 +33,7 @@ class ConcertOrdersController extends Controller
 
         try {
             $reservation = $concert->reserveTickets(request('ticket_quantity'), request('email'));
-            $order = $reservation->complete($this->paymentGateway, request('payment_token'));
+            $order = $reservation->complete($this->paymentGateway, request('payment_token'), $concert->user->stripe_account_id);
 
             Mail::to($order->email)->send(new OrderConfirmationEmail($order));
 
diff --git a/app/Reservation.php b/app/Reservation.php
index 7a8e6cc..b3954a6 100644
--- a/app/Reservation.php
+++ b/app/Reservation.php
@@ -28,9 +28,9 @@ class Reservation
         return $this->email;
     }
 
-    public function complete($paymentGateway, $paymentToken)
+    public function complete($paymentGateway, $paymentToken, $destinationAccountId)
     {
-        $charge = $paymentGateway->charge($this->totalCost(), $paymentToken);
+        $charge = $paymentGateway->charge($this->totalCost(), $paymentToken, $destinationAccountId);
 
         return Order::forTickets($this->tickets(), $this->email(), $charge);
     }
diff --git a/database/seeds/DatabaseSeeder.php b/database/seeds/DatabaseSeeder.php
index 6597fe6..f7eb039 100644
--- a/database/seeds/DatabaseSeeder.php
+++ b/database/seeds/DatabaseSeeder.php
@@ -40,7 +40,7 @@ class DatabaseSeeder extends Seeder
             Carbon::setTestNow(Carbon::instance($faker->dateTimeBetween('-2 months')));
 
             $concert->reserveTickets(rand(1, 4), $faker->safeEmail)
-                    ->complete($gateway, $gateway->getValidTestToken($faker->creditCardNumber));
+                    ->complete($gateway, $gateway->getValidTestToken($faker->creditCardNumber), 'test_acct_1234');
         }
 
         Carbon::setTestNow();
diff --git a/tests/Unit/Billing/FakePaymentGatewayTest.php b/tests/Unit/Billing/FakePaymentGatewayTest.php
index bbe1b09..fabcf3a 100644
--- a/tests/Unit/Billing/FakePaymentGatewayTest.php
+++ b/tests/Unit/Billing/FakePaymentGatewayTest.php
@@ -34,11 +34,11 @@ class FakePaymentGatewayTest extends TestCase
 
         $paymentGateway->beforeFirstCharge(function ($paymentGateway) use (&$timesCallbackRan) {
             $timesCallbackRan++;
-            $paymentGateway->charge(2500, $paymentGateway->getValidTestToken());
+            $paymentGateway->charge(2500, $paymentGateway->getValidTestToken(), 'test_acct_1234');
             $this->assertEquals(2500, $paymentGateway->totalCharges());
         });
 
-        $paymentGateway->charge(2500, $paymentGateway->getValidTestToken());
+        $paymentGateway->charge(2500, $paymentGateway->getValidTestToken(), 'test_acct_1234');
         $this->assertEquals(1, $timesCallbackRan);
         $this->assertEquals(5000, $paymentGateway->totalCharges());
     }
diff --git a/tests/Unit/Billing/PaymentGatewayContractTests.php b/tests/Unit/Billing/PaymentGatewayContractTests.php
index 68b478d..667a2cc 100644
--- a/tests/Unit/Billing/PaymentGatewayContractTests.php
+++ b/tests/Unit/Billing/PaymentGatewayContractTests.php
@@ -14,7 +14,7 @@ trait PaymentGatewayContractTests
         $paymentGateway = $this->getPaymentGateway();
 
         $newCharges = $paymentGateway->newChargesDuring(function ($paymentGateway) {
-            $paymentGateway->charge(2500, $paymentGateway->getValidTestToken());
+            $paymentGateway->charge(2500, $paymentGateway->getValidTestToken(), 'test_acct_1234');
         });
 
         $this->assertCount(1, $newCharges);
@@ -40,7 +40,7 @@ trait PaymentGatewayContractTests
 
         $newCharges = $paymentGateway->newChargesDuring(function ($paymentGateway) {
             try {
-                $paymentGateway->charge(2500, 'invalid-payment-token');
+                $paymentGateway->charge(2500, 'invalid-payment-token', 'test_acct_1234');
             } catch (PaymentFailedException $e) {
                 return;
             }
@@ -55,12 +55,12 @@ trait PaymentGatewayContractTests
     function can_fetch_charges_created_during_a_callback()
     {
         $paymentGateway = $this->getPaymentGateway();
-        $paymentGateway->charge(2000, $paymentGateway->getValidTestToken());
-        $paymentGateway->charge(3000, $paymentGateway->getValidTestToken());
+        $paymentGateway->charge(2000, $paymentGateway->getValidTestToken(), 'test_acct_1234');
+        $paymentGateway->charge(3000, $paymentGateway->getValidTestToken(), 'test_acct_1234');
 
         $newCharges = $paymentGateway->newChargesDuring(function ($paymentGateway) {
-            $paymentGateway->charge(4000, $paymentGateway->getValidTestToken());
-            $paymentGateway->charge(5000, $paymentGateway->getValidTestToken());
+            $paymentGateway->charge(4000, $paymentGateway->getValidTestToken(), 'test_acct_1234');
+            $paymentGateway->charge(5000, $paymentGateway->getValidTestToken(), 'test_acct_1234');
         });
 
         $this->assertCount(2, $newCharges);
diff --git a/tests/Unit/ReservationTest.php b/tests/Unit/ReservationTest.php
index e5f3001..e1db36f 100644
--- a/tests/Unit/ReservationTest.php
+++ b/tests/Unit/ReservationTest.php
@@ -76,11 +76,11 @@ class ReservationTest extends TestCase
         $reservation = new Reservation($tickets, 'john@example.com');
         $paymentGateway = new FakePaymentGateway;
 
-        $order = $reservation->complete($paymentGateway, $paymentGateway->getValidTestToken());
+        $order = $reservation->complete($paymentGateway, $paymentGateway->getValidTestToken(), 'test_acct_1234');
 
         $this->assertEquals('john@example.com', $order->email);
         $this->assertEquals(3, $order->ticketQuantity());
         $this->assertEquals(3600, $order->amount);
-        $this->assertEquals(3600, $paymentGateway->totalCharges());
+        $this->assertEquals(3600, $paymentGateway->totalChargesFor('test_acct_1234'));
     }
 }