diff --git a/src/Parbad/src/Gateway/Melli/Internal/MelliHelper.cs b/src/Parbad/src/Gateway/Melli/Internal/MelliHelper.cs
index 2286f3ab..37aa765d 100644
--- a/src/Parbad/src/Gateway/Melli/Internal/MelliHelper.cs
+++ b/src/Parbad/src/Gateway/Melli/Internal/MelliHelper.cs
@@ -18,6 +18,7 @@ internal static class MelliHelper
     {
         private const int SuccessCode = 0;
         private const int DuplicateTrackingNumberCode = 1011;
+        public const string CumulativeAccountsKey="MultiplexingData";
 
         public static object CreateRequestData(Invoice invoice, MelliGatewayAccount account, IMelliGatewayCrypto crypto)
         {
@@ -25,15 +26,42 @@ public static object CreateRequestData(Invoice invoice, MelliGatewayAccount acco
 
             var signedData = crypto.Encrypt(account.TerminalKey, data);
 
-            return CreateRequestObject(
+            if (invoice.Properties == null || !invoice.Properties.ContainsKey(CumulativeAccountsKey))
+            {
+                return CreateRequestObject(
+                    account.TerminalId,
+                    account.MerchantId,
+                    invoice.Amount,
+                    signedData,
+                    invoice.CallbackUrl,
+                    invoice.TrackingNumber);
+                
+            }
+
+            var melliCumulativeAccount = (MelliCumulativeAccount)invoice.Properties[CumulativeAccountsKey];
+            return CreateRequestMultiplexingDataObject(
                 account.TerminalId,
                 account.MerchantId,
                 invoice.Amount,
                 signedData,
                 invoice.CallbackUrl,
-                invoice.TrackingNumber);
+                invoice.TrackingNumber,
+                melliCumulativeAccount);
+        }
+        private static object CreateRequestMultiplexingDataObject(string terminalId, string merchantId, long amount, string signedData, string callbackUrl, long orderId, MelliCumulativeAccount melliCumulativeAccount)
+        {
+            return new
+            {
+                TerminalId = terminalId,
+                MerchantId = merchantId,
+                Amount = amount,
+                SignData = signedData,
+                ReturnUrl = callbackUrl,
+                LocalDateTime = DateTime.Now,
+                OrderId = orderId.ToString(),
+                MultiplexingData=melliCumulativeAccount
+            };
         }
-
         public static PaymentRequestResult CreateRequestResult(
             MelliApiRequestResult result,
             HttpContext httpContext,
diff --git a/src/Parbad/src/Gateway/Melli/MelliCumulativeAccount.cs b/src/Parbad/src/Gateway/Melli/MelliCumulativeAccount.cs
new file mode 100644
index 00000000..36d09648
--- /dev/null
+++ b/src/Parbad/src/Gateway/Melli/MelliCumulativeAccount.cs
@@ -0,0 +1,42 @@
+using System.Collections.Generic;
+
+namespace Parbad.Gateway.Melli;
+
+public class MelliCumulativeAccount
+{
+    public enum Types
+    {
+        /// <summary>
+        /// تسهیم با ارسال مبلغ
+        /// </summary>
+        Amount,
+        
+        /// <summary>
+        /// تسهیم با ارسال درصد
+        /// </summary>
+        Percentage
+    }
+
+    public class MultiplexingRow
+    {
+        /// <summary>
+        /// ردیف یا شماره شبای حساب
+        /// </summary>
+        public string IbanNumber { get; set; }
+        
+        /// <summary>
+        /// مبلغ یا درصد
+        /// </summary>
+        public int Value { get; set; }
+    }
+    
+    /// <summary>
+    /// نوع تسهیم
+    /// </summary>
+    public Types Type { get; set; }
+    
+    /// <summary>
+    /// مقدار تسهیم
+    /// </summary>
+    public List<MultiplexingRow> MultiplexingRows { get; set; }
+}
\ No newline at end of file
diff --git a/src/Parbad/src/Gateway/Melli/MelliGatewayBuilderExtensions.cs b/src/Parbad/src/Gateway/Melli/MelliGatewayBuilderExtensions.cs
index 0d7d6fe8..731f5b20 100644
--- a/src/Parbad/src/Gateway/Melli/MelliGatewayBuilderExtensions.cs
+++ b/src/Parbad/src/Gateway/Melli/MelliGatewayBuilderExtensions.cs
@@ -5,6 +5,7 @@
 using Microsoft.Extensions.DependencyInjection;
 using Parbad.Gateway.Melli.Internal;
 using Parbad.GatewayBuilders;
+using Parbad.InvoiceBuilder;
 
 namespace Parbad.Gateway.Melli
 {
@@ -53,5 +54,23 @@ public static IGatewayConfigurationBuilder<MelliGateway> WithOptions(
 
             return builder;
         }
+        
+        /// <summary>
+        /// اضافه کردن اطلاعات تسهیم بانک سداد ملی به درخواست
+        /// </summary>
+        /// <exception cref="ArgumentNullException"></exception>
+        public static IInvoiceBuilder AddMelliCumulativeAccounts(this IInvoiceBuilder builder, MelliCumulativeAccount data)
+        {
+            if (data == null) throw new ArgumentNullException(nameof(data));
+            if (data.MultiplexingRows==null || data.MultiplexingRows.Count==0)  throw new ArgumentNullException(nameof(data.MultiplexingRows));
+            
+            builder.ChangeProperties(properties =>
+            {
+                properties[MelliHelper.CumulativeAccountsKey] = data;
+            });
+
+            return builder;
+        }
+        
     }
 }