diff --git a/Framework/YLErp.Core/DBModels/SwapEvent.cs b/Framework/YLErp.Core/DBModels/SwapEvent.cs
index 4b0af775..311c25d1 100644
--- a/Framework/YLErp.Core/DBModels/SwapEvent.cs
+++ b/Framework/YLErp.Core/DBModels/SwapEvent.cs
@@ -183,5 +183,8 @@ namespace YLErp.DBModels
         /// 支付日
         /// </summary>
         public DateTime? PayDate { get; set; }
+
+        [NotMapped]
+        public DateTime? TradeStartDate { get; set; }
     }
 }
diff --git a/Framework/YLErp.Core/DBModels/underlying_manager.cs b/Framework/YLErp.Core/DBModels/underlying_manager.cs
index 5edecdac..38138af3 100644
--- a/Framework/YLErp.Core/DBModels/underlying_manager.cs
+++ b/Framework/YLErp.Core/DBModels/underlying_manager.cs
@@ -326,6 +326,7 @@ namespace YLErp.DBModels
         ///  债券增值税
         /// </summary>
         [Column("value_added_tax")]
+        [DisplayName("增值税率")]
         public decimal? ValueAddedTax  { get; set; }
 
         public override string ToString()
diff --git a/YLErpDAL/Modules/EodModule/BondPaymentService.cs b/YLErpDAL/Modules/EodModule/BondPaymentService.cs
index 05f5a1cf..eda780f8 100644
--- a/YLErpDAL/Modules/EodModule/BondPaymentService.cs
+++ b/YLErpDAL/Modules/EodModule/BondPaymentService.cs
@@ -96,11 +96,19 @@ namespace YLErp.Modules.EodModule
         /// <param name="startDate"></param>
         /// <param name="endDate"></param>
         /// <returns></returns>
-        public List<BondPayment> GetBondPayments(string underylingCode, DateTime startDate, DateTime endDate)
+        public List<BondPayment> GetBondPayments(string underlyingCode, DateTime startDate, DateTime endDate)
         {
-            var result = DbContext.bondPayment.Where(x => x.underlyingCode == underylingCode && x.payment_date > startDate && x.payment_date <= endDate).AsNoTracking().ToList();
+            var result = DbContext.bondPayment.Where(x => x.underlyingCode == underlyingCode && x.payment_date > startDate && x.payment_date <= endDate).AsNoTracking().ToList();
             return result;
         }
+
+
+        public List<BondPayment> GetTargetDatePayments(string underlyingCode, DateTime targetDate)
+        {
+            var startDate = targetDate.Date;
+            var endDate = startDate.AddDays(1);
+            return DbContext.bondPayment.AsNoTracking().Where(x => x.underlyingCode == underlyingCode && x.payment_date >= startDate && x.payment_date < endDate).ToList();
+        }
         /// <summary>
         /// 计算某债券某段时间的期间付息
         /// </summary>
@@ -111,9 +119,9 @@ namespace YLErp.Modules.EodModule
         /// <param name="longRatio">多空方向</param>
         /// <param name="payDirection">收支方向</param>
         /// <returns></returns>
-        public decimal CalcPayment(string underylingCode, DateTime startDate, DateTime endDate, decimal qty, decimal longRatio, decimal payDirection)
+        public decimal CalcPayment(string underlyingCode, DateTime startDate, DateTime endDate, decimal qty, decimal longRatio, decimal payDirection)
         {
-            var payments = GetBondPayments(underylingCode, startDate, endDate);
+            var payments = GetBondPayments(underlyingCode, startDate, endDate);
             return CalcPayment(payments, qty, longRatio, payDirection);
         }
         /// <summary>
diff --git a/YLErpDAL/Modules/SwapModule/SwapDealService.cs b/YLErpDAL/Modules/SwapModule/SwapDealService.cs
index 28689a31..19775965 100644
--- a/YLErpDAL/Modules/SwapModule/SwapDealService.cs
+++ b/YLErpDAL/Modules/SwapModule/SwapDealService.cs
@@ -71,6 +71,7 @@ namespace YLErp.Modules.SwapModule
             }
             else
             {
+                unwindData.TradeStartDate = td.StartDate;
                 unwindData.CloseType = commodity ? 1 : 2;
                 unwindData.StartDate = td.TradeDate.Value;
                 if (preDealDate.HasValue)
@@ -880,13 +881,15 @@ namespace YLErp.Modules.SwapModule
                 floatEvent.TradingFeePending = position.PosiTradingFeePending * unwindData.ClosePercent;
                 floatEvent.TradingFeePending = Math.Round(floatEvent.TradingFeePending, ConsGlobal.MoneyRound, MidpointRounding.AwayFromZero);
                 floatEvent.TradingFee = closeFee;
+
                 BondPaymentService bondPaymentService = new BondPaymentService(UserInfo);
                 var tax = GetUnderlyingTax(floatEvent.UnderlyingCode);
-                var payments = bondPaymentService.GetBondPayments(floatEvent.UnderlyingCode, td.StartDate.Value, floatEvent.UnwindDate.Value);
-                var payment = bondPaymentService.CalcPayment(payments, unwindQty, longRatio, floatRatio);
-                floatEvent.DividendIn = payment / (1 + tax) * (1 - tax);
+                // 只计算事件日期当天的分红收益
+                var payments = bondPaymentService.GetTargetDatePayments(floatEvent.UnderlyingCode, floatEvent.EventDate);
+                floatEvent.DividendIn = bondPaymentService.CalcPayment(payments, unwindQty, longRatio, floatRatio) / (1 + tax) * (1 - tax);
                 floatEvent.DividendIn = Math.Round(floatEvent.DividendIn, 2, MidpointRounding.AwayFromZero);
-                floatEvent.DividendPending = bondPaymentService.CalcPayment(payments, floatEvent.PositionQty ?? 0, longRatio, floatRatio);
+                floatEvent.DividendPending = bondPaymentService.CalcPayment(payments, floatEvent.PositionQty ?? 0, longRatio, floatRatio) / (1 + tax) * (1 - tax);
+
 
                 floatEvent.MarkClosePnl = (unwindPrice - position.PosiGrossPrice) * unwindQty * floatRatio * longRatio;
                 floatEvent.MarkClosePnl = Math.Round(floatEvent.MarkClosePnl + ((floatEvent.TradingFeePending+ closeFee) * floatRatio * -1) + floatEvent.DividendIn, ConsGlobal.MoneyRound, MidpointRounding.AwayFromZero);
diff --git a/YLErpWeb/Views/underlying_manager/underlying_managerEdit.cshtml b/YLErpWeb/Views/underlying_manager/underlying_managerEdit.cshtml
index e1280475..db4e13a7 100644
--- a/YLErpWeb/Views/underlying_manager/underlying_managerEdit.cshtml
+++ b/YLErpWeb/Views/underlying_manager/underlying_managerEdit.cshtml
@@ -308,6 +308,10 @@
             <label class='formlabel'>描述</label>
             <input id='Desc' class='text-box' type='text' value='@(underlying.UnderlyingDesc)' name='Desc' />
         </div>
+        <div class='form-group col-6'>
+            <label class='formlabel'>增值税率</label>
+            <input id='ValueAddedTax' class='text-box' type='number' value='@(underlying.ValueAddedTax)' name='ValueAddedTax' />
+        </div>
     </div>
 
     <div class="Stock" style="padding-left:130px;">
diff --git a/YLErpWeb/Views/underlying_manager/underlying_managerView.cshtml b/YLErpWeb/Views/underlying_manager/underlying_managerView.cshtml
index 07953c86..f22e7837 100644
--- a/YLErpWeb/Views/underlying_manager/underlying_managerView.cshtml
+++ b/YLErpWeb/Views/underlying_manager/underlying_managerView.cshtml
@@ -170,6 +170,11 @@
                     @Html.MyDisplayFor(m => m.Price)
                 </tr>
             }
+            
+            <tr>
+                <th class="tdRight">增值税率</th>
+                <td>@(Model.ValueAddedTax.OtcFormatPercent())</td>
+            </tr> 
         </tbody>
     </table>
 </div>
diff --git a/YLErpWeb/wwwroot/Scripts/app/swaptrade/unwindSwapTrade.js b/YLErpWeb/wwwroot/Scripts/app/swaptrade/unwindSwapTrade.js
index 1eff09c5..fe235911 100644
--- a/YLErpWeb/wwwroot/Scripts/app/swaptrade/unwindSwapTrade.js
+++ b/YLErpWeb/wwwroot/Scripts/app/swaptrade/unwindSwapTrade.js
@@ -51,6 +51,7 @@ const vue = new Vue({
             });
             this.ratio = this.floatPosition.PayDirection == 1 ? -1 : 1;
             this.shortRatio = this.floatPosition.PositionType == 1 ? 1 : -1;
+            this.TradeStartDate = model.TradeStartDate;
         },
         IsBond(instType) {
             return tradeHelper.IsBond(instType);
@@ -269,7 +270,7 @@ const vue = new Vue({
             var thisObj = this;
             let ratio = this.floatPosition.PositionType == 1 ? 1 : -1;
             let floatRatio = this.floatPosition.PayDirection == 1 ? 1 : -1;
-            var postData = { startDate: thisObj.floatPosition.PosiStartDate, endDate: thisObj.deal.UnwindDate, underlyingCode: thisObj.floatPosition.UnderlyingCode }
+            var postData = { startDate: thisObj.TradeStartDate, endDate: thisObj.deal.UnwindDate, underlyingCode: thisObj.floatPosition.UnderlyingCode }
             main.post("/BondPayment/GetBondPayMentInterest", postData, { async: false }).done(function (resp) {
                 thisObj.floatPosition.DividendIn = parseFloat(thisObj.deal.CloseQty) * resp.obj * ratio * floatRatio;
                 var posiQty = parseFloat(thisObj.floatPosition.Quantity) - parseFloat(thisObj.deal.CloseQty);