diff --git a/app/Http/Controllers/Admin/PlatformOrderController.php b/app/Http/Controllers/Admin/PlatformOrderController.php
index 7113580..9340742 100644
--- a/app/Http/Controllers/Admin/PlatformOrderController.php
+++ b/app/Http/Controllers/Admin/PlatformOrderController.php
@@ -463,7 +463,12 @@ class PlatformOrderController extends Controller
         $expectedPaid = (float) (($order->paid_amount ?? 0) > 0 ? $order->paid_amount : $order->payable_amount);
         $receiptCents = (int) round($receiptTotal * 100);
         $expectedCents = (int) round($expectedPaid * 100);
-        if ($receiptCents > 0 && abs($receiptCents - $expectedCents) >= 1) {
+
+        $tol = (float) config('saasshop.amounts.tolerance', 0.01);
+        $tolCents = (int) round($tol * 100);
+        $tolCents = max(1, $tolCents);
+
+        if ($receiptCents > 0 && abs($receiptCents - $expectedCents) >= $tolCents) {
             return redirect()->back()->with('warning', '当前订单已存在支付回执，但回执总额与订单金额不一致。为避免带病推进，请先补齐/修正支付回执后再执行「标记支付并生效」。');
         }
 
diff --git a/tests/Feature/AdminPlatformOrderMarkPaidAndActivateReconcileMismatchSafetyValveTest.php b/tests/Feature/AdminPlatformOrderMarkPaidAndActivateReconcileMismatchSafetyValveTest.php
index c15b4ad..df0b52b 100644
--- a/tests/Feature/AdminPlatformOrderMarkPaidAndActivateReconcileMismatchSafetyValveTest.php
+++ b/tests/Feature/AdminPlatformOrderMarkPaidAndActivateReconcileMismatchSafetyValveTest.php
@@ -38,7 +38,7 @@ class AdminPlatformOrderMarkPaidAndActivateReconcileMismatchSafetyValveTest exte
             'published_at' => now(),
         ]);
 
-        // 已存在回执汇总，但与订单应付金额不一致
+        // 已存在回执汇总，但与订单应付金额不一致（差 0.02，超过默认容差 0.01）
         $order = PlatformOrder::query()->create([
             'merchant_id' => $merchant->id,
             'plan_id' => $plan->id,
diff --git a/tests/Feature/AdminPlatformOrderMarkPaidAndActivateToleranceConfigTest.php b/tests/Feature/AdminPlatformOrderMarkPaidAndActivateToleranceConfigTest.php
new file mode 100644
index 0000000..4671a5d
--- /dev/null
+++ b/tests/Feature/AdminPlatformOrderMarkPaidAndActivateToleranceConfigTest.php
@@ -0,0 +1,75 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Merchant;
+use App\Models\Plan;
+use App\Models\PlatformOrder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminPlatformOrderMarkPaidAndActivateToleranceConfigTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function loginAsPlatformAdmin(): void
+    {
+        $this->seed();
+
+        $this->post('/admin/login', [
+            'email' => 'platform.admin@demo.local',
+            'password' => 'Platform@123456',
+        ])->assertRedirect('/admin');
+    }
+
+    public function test_mark_paid_and_activate_uses_configured_tolerance_for_receipt_mismatch_safety_valve(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        config(['saasshop.amounts.tolerance' => 0.05]);
+
+        $merchant = Merchant::query()->firstOrFail();
+        $plan = Plan::query()->create([
+            'code' => 'mark_paid_tol_cfg_plan',
+            'name' => '标记支付容差配置测试（月付）',
+            'billing_cycle' => 'monthly',
+            'price' => 30,
+            'list_price' => 30,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        // 订单应付 30.00，已有回执 30.02（差 0.02），在容差 0.05 内，不应阻断
+        $order = PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_no' => 'PO_MARK_PAID_TOL_CFG_0001',
+            'order_type' => 'new_purchase',
+            'status' => 'pending',
+            'payment_status' => 'unpaid',
+            'plan_name' => $plan->name,
+            'billing_cycle' => $plan->billing_cycle,
+            'period_months' => 1,
+            'quantity' => 1,
+            'payable_amount' => 30,
+            'paid_amount' => 0,
+            'placed_at' => now(),
+            'meta' => [
+                'payment_summary' => [
+                    'count' => 1,
+                    'total_amount' => 30.02,
+                ],
+            ],
+        ]);
+
+        $res = $this->post('/admin/platform-orders/' . $order->id . '/mark-paid-and-activate');
+        $res->assertRedirect();
+        $res->assertSessionHas('success');
+
+        $order->refresh();
+        $this->assertSame('paid', $order->payment_status);
+        $this->assertSame('activated', $order->status);
+        $this->assertNotNull($order->site_subscription_id);
+    }
+}