diff --git a/ReportImp/SPZRatingen/Calculations/CustomDurationCalculator.cs b/ReportImp/SPZRatingen/Calculations/CustomDurationCalculator.cs
new file mode 100644
index 000000000..ab22ca5bb
--- /dev/null
+++ b/ReportImp/SPZRatingen/Calculations/CustomDurationCalculator.cs
@@ -0,0 +1,49 @@
+using System;
+using BeWo.Data.Entities;
+using BeWo.Service.Plugins;
+using BS.Shared.DataContracts;
+
+namespace SpzRatingen
+{
+	public class CustomDurationCalculator : ServiceRecordDurationCalculator
+	{
+        public override void CalculateRoundedDuration(ServiceRecord sr)
+        {
+			if (sr.CostBearer2SupportConcept != null && sr.ServiceDescription.ServiceCategory != null &&
+					sr.ServiceDescription.ServiceCategory.IsBillable && sr.ServiceDescription.ServiceCategory.Name == "Soziotherapie")
+			{
+				var durationInMinutes = (decimal)sr.End.Value.Subtract(sr.Start.Value).TotalMinutes;
+
+				decimal lRoundedDuration = durationInMinutes;
+				lRoundedDuration = durationInMinutes % 25 != 0
+										? durationInMinutes + (25 - (durationInMinutes % 25))
+										: durationInMinutes;
+
+				sr.RoundedDuration = (int)Math.Round(lRoundedDuration, 0, MidpointRounding.AwayFromZero);
+			}
+			else
+			{
+				base.CalculateRoundedDuration(sr);
+			}
+		}
+
+		public override void CalculateRoundedDuration(ServiceRecordDC sr)
+		{
+			if (sr.ServiceDescription.Category != null && sr.ServiceDescription.Category.IsBillable && sr.ServiceDescription.Category.Name == "Soziotherapie")
+			{
+				var durationInMinutes = (decimal)sr.End.Value.Subtract(sr.Start.Value).TotalMinutes;
+
+				decimal lRoundedDuration = durationInMinutes;
+				lRoundedDuration = durationInMinutes % 25 != 0
+										? durationInMinutes + (25 - (durationInMinutes % 25))
+										: durationInMinutes;
+
+				sr.RoundedDuration = (int)Math.Round(lRoundedDuration, 0, MidpointRounding.AwayFromZero);
+			}
+			else
+			{
+				base.CalculateRoundedDuration(sr);
+			}
+		}
+	}
+}
\ No newline at end of file
diff --git a/ReportImp/SPZRatingen/Properties/licenses.licx b/ReportImp/SPZRatingen/Properties/licenses.licx
index e69de29bb..d59547a61 100644
--- a/ReportImp/SPZRatingen/Properties/licenses.licx
+++ b/ReportImp/SPZRatingen/Properties/licenses.licx
@@ -0,0 +1 @@
+DevExpress.XtraReports.UI.XtraReport, DevExpress.XtraReports.v23.2, Version=23.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
diff --git a/ReportImp/SPZRatingen/SPZRatingen.csproj b/ReportImp/SPZRatingen/SPZRatingen.csproj
index 97d7cbbdb..b6940fb32 100644
--- a/ReportImp/SPZRatingen/SPZRatingen.csproj
+++ b/ReportImp/SPZRatingen/SPZRatingen.csproj
@@ -58,6 +58,7 @@
     <Reference Include="System.Windows.Forms" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Calculations\CustomDurationCalculator.cs" />
     <Compile Include="CustomReportCreator.cs" />
     <Compile Include="InvoiceCustomerReport.cs">
       <SubType>Component</SubType>