diff --git a/YLErpDAL/Modules/SwapModule/SwapEodPositionService.cs b/YLErpDAL/Modules/SwapModule/SwapEodPositionService.cs
index 8c15c222..1fa4c2ad 100644
--- a/YLErpDAL/Modules/SwapModule/SwapEodPositionService.cs
+++ b/YLErpDAL/Modules/SwapModule/SwapEodPositionService.cs
@@ -831,7 +831,10 @@ namespace YLErp.Modules.SwapModule
             newEodPayPosition.TdCloseInterestFee = newEodPayPosition.TdInterestFee;
             //持仓内容-利息腿-损益统计(本方视角）
             newEodPayPosition.TdInterestIncome = newEodPayPosition.TdCloseInterest;
-            newEodPayPosition.InterestIncomeSum = eodPayPosition.InterestIncomeSum + newEodPayPosition.TdInterestIncome - newEodPayPosition.TdCloseInterest;
+            // 互换日待实现应扣减当日实现的全程利息(TdCloseInterest)。
+            // 原公式 pre + TdInterestIncome - TdCloseInterest 中 TdInterestIncome==TdCloseInterest 会抵消，
+            // 导致待实现不变(互换结清后没归零)。改为直接 pre - TdCloseInterest。
+            newEodPayPosition.InterestIncomeSum = eodPayPosition.InterestIncomeSum - newEodPayPosition.TdCloseInterest;
             newEodPayPosition.InterestFeeSum = eodPayPosition.InterestFeeSum + newEodPayPosition.TdInterestFee - newEodPayPosition.TdCloseInterestFee;
             newEodPayPosition.InterestProfitSum = newEodPayPosition.InterestIncomeSum + newEodPayPosition.InterestFeeSum;
             //持仓价值