diff --git a/YLErpDAL/Modules/SwapModule/SwapDealService.cs b/YLErpDAL/Modules/SwapModule/SwapDealService.cs
index 152c0176..ba511cd9 100644
--- a/YLErpDAL/Modules/SwapModule/SwapDealService.cs
+++ b/YLErpDAL/Modules/SwapModule/SwapDealService.cs
@@ -13,6 +13,7 @@ using YLErp.Modules.TradeModule;
 using YLErp.Modules.TradeModule.DealModule;
 using YLErp.Modules.SwapModule.FundingLegs;
 using YLErp.Modules.SwapModule.Margin;
+using YLErp.Modules.SwapModule.ReturnLegs;
 using YLErp.QdpModule;
 
 namespace YLErp.Modules.SwapModule
@@ -1803,7 +1804,7 @@ namespace YLErp.Modules.SwapModule
             var dividendIn = servie.CalcPayment(payments, unwindQty, shortRatio, directionRatio);
             var um = DataCacheProvider.GetUnderlyingDataSource().GetData(flowEvent.UnderlyingCode);
             decimal tax = um.ValueAddedTax ?? 0;
-            dividendIn = dividendIn / (1 + tax) * (1 - tax);
+            dividendIn = DividendCalc.AfterTaxRaw(dividendIn, tax);
 
             flowEvent.DividendIn = Math.Round(dividendIn, 2, MidpointRounding.AwayFromZero);
         }