diff --git a/app/Http/Controllers/Admin/PlatformOrderController.php b/app/Http/Controllers/Admin/PlatformOrderController.php
index d577e45..e600ebb 100644
--- a/app/Http/Controllers/Admin/PlatformOrderController.php
+++ b/app/Http/Controllers/Admin/PlatformOrderController.php
@@ -651,8 +651,14 @@ class PlatformOrderController extends Controller
         if ((float) $data['amount'] > 0 && in_array($order->payment_status, ['paid', 'partially_refunded'], true)) {
             $paidAmount = (float) ($order->paid_amount ?? 0);
 
-            // 退款总额 >= 已付金额 => 视为已退款；否则视为部分退款
-            if ($paidAmount > 0 && $totalRefunded >= $paidAmount) {
+            // 退款总额 + 容差 >= 已付金额 => 视为已退款；否则视为部分退款（与 refund_inconsistent 口径一致）
+            $tol = (float) config('saasshop.amounts.tolerance', 0.01);
+            $tolCents = (int) round($tol * 100);
+            $tolCents = max(1, $tolCents);
+            $paidCents = (int) round($paidAmount * 100);
+            $refundCents = (int) round($totalRefunded * 100);
+
+            if ($paidCents > 0 && ($refundCents + $tolCents) >= $paidCents) {
                 $order->payment_status = 'refunded';
                 $order->refunded_at = $order->refunded_at ?: now();
             } else {
@@ -680,9 +686,14 @@ class PlatformOrderController extends Controller
             return redirect()->back()->with('warning', '当前订单已是已退款状态，无需重复操作。');
         }
 
-        // 安全阀：仅允许在“退款总额已达到/超过已付金额”时标记为已退款
+        // 安全阀：仅允许在“退款总额已达到/超过已付金额 + 容差”时标记为已退款
         $refundTotal = (float) $this->refundTotalForOrder($order);
-        if (round($refundTotal * 100) + 1 < round($paidAmount * 100)) {
+
+        $tol = (float) config('saasshop.amounts.tolerance', 0.01);
+        $tolCents = (int) round($tol * 100);
+        $tolCents = max(1, $tolCents);
+
+        if (round($refundTotal * 100) + $tolCents < round($paidAmount * 100)) {
             return redirect()->back()->with('warning', '退款总额尚未达到已付金额，无法标记为已退款。请先核对/补齐退款记录。');
         }
 
@@ -724,13 +735,18 @@ class PlatformOrderController extends Controller
             return redirect()->back()->with('warning', '当前订单已是部分退款状态，无需重复操作。');
         }
 
-        // 安全阀：部分退款需要“退款总额>0 且未达到已付金额”
+        // 安全阀：部分退款需要“退款总额>0 且 未达到已付金额 + 容差”
         $refundTotal = (float) $this->refundTotalForOrder($order);
+
+        $tol = (float) config('saasshop.amounts.tolerance', 0.01);
+        $tolCents = (int) round($tol * 100);
+        $tolCents = max(1, $tolCents);
+
         if (round($refundTotal * 100) <= 0) {
             return redirect()->back()->with('warning', '退款总额为 0，无法标记为部分退款。');
         }
-        if (round($refundTotal * 100) + 1 >= round($paidAmount * 100)) {
-            return redirect()->back()->with('warning', '退款总额已达到/超过已付金额，建议标记为已退款。');
+        if (round($refundTotal * 100) + $tolCents >= round($paidAmount * 100)) {
+            return redirect()->back()->with('warning', '退款总额已达到/超过已付金额（考虑容差），建议标记为已退款。');
         }
 
         $now = now();
diff --git a/tests/Feature/AdminPlatformOrderRefundReceiptAccumulateToFullyRefundedTest.php b/tests/Feature/AdminPlatformOrderRefundReceiptAccumulateToFullyRefundedTest.php
index dcc25ef..ac60fe0 100644
--- a/tests/Feature/AdminPlatformOrderRefundReceiptAccumulateToFullyRefundedTest.php
+++ b/tests/Feature/AdminPlatformOrderRefundReceiptAccumulateToFullyRefundedTest.php
@@ -68,11 +68,11 @@ class AdminPlatformOrderRefundReceiptAccumulateToFullyRefundedTest extends TestC
         $order->refresh();
         $this->assertSame('partially_refunded', $order->payment_status);
 
-        // 第二次退款 20 -> 累计 30，应推进到 refunded
+        // 第二次退款 20.01 -> 累计 30.01（超过 tol=0.01），应推进到 refunded
         $this->post('/admin/platform-orders/' . $order->id . '/add-refund-receipt', [
             'type' => 'refund',
             'channel' => 'wechat',
-            'amount' => 20,
+            'amount' => 20.01,
             'refunded_at' => now()->addMinute()->format('Y-m-d H:i:s'),
             'note' => '第二次退款',
         ])->assertRedirect();
@@ -83,6 +83,6 @@ class AdminPlatformOrderRefundReceiptAccumulateToFullyRefundedTest extends TestC
         $this->assertNotNull($order->refunded_at);
 
         $refundSummaryTotal = (float) data_get($order->meta, 'refund_summary.total_amount');
-        $this->assertSame(30.0, $refundSummaryTotal);
+        $this->assertSame(30.01, $refundSummaryTotal);
     }
 }