diff --git a/Elwig/Documents/PaymentVariantSummary.cshtml b/Elwig/Documents/PaymentVariantSummary.cshtml
index 5c2c9e6..43c4b14 100644
--- a/Elwig/Documents/PaymentVariantSummary.cshtml
+++ b/Elwig/Documents/PaymentVariantSummary.cshtml
@@ -66,6 +66,12 @@
                 <th colspan="2" class="lborder">Automatische Nachzeichnung der GA:</th>
                 <td class="center">@(Model.BillingData.ConsiderAutoBusinessShares ? "Ja" : "Nein")</td>
             </tr>
+            <tr>
+                <th>Berechnung:</th>
+                <td colspan="3" class="center">@($"{Model.Variant.CalcTime:dd.MM.yyyy, HH:mm:ss}")</td>
+                <th colspan="2" class="lborder">Benutzerdef. Zu-/Abschläge pro Mitglied:</th>
+                <td class="center">@(Model.BillingData.ConsiderCustomModifiers ? "Ja" : "Nein")</td>
+            </tr>
             <tr class="sectionheading">
                 <th colspan="4">Beträge</th>
                 <th colspan="3" class="lborder">Statistik</th>
diff --git a/Elwig/Helpers/Billing/BillingData.cs b/Elwig/Helpers/Billing/BillingData.cs
index cf2cc91..6cc6a5d 100644
--- a/Elwig/Helpers/Billing/BillingData.cs
+++ b/Elwig/Helpers/Billing/BillingData.cs
@@ -41,6 +41,10 @@ namespace Elwig.Helpers.Billing {
             get => GetConsider("consider_auto_business_shares");
             set => SetConsider(value, "consider_auto_business_shares");
         }
+        public bool ConsiderCustomModifiers {
+            get => GetConsider("consider_custom_modifiers");
+            set => SetConsider(value, "consider_custom_modifiers");
+        }
 
         public double NetWeightModifier {
             get => GetWeightModifier("net_weight_modifier", "Rebelzuschlag");
diff --git a/Elwig/Models/Entities/PaymentVar.cs b/Elwig/Models/Entities/PaymentVar.cs
index ff28dd1..33abe52 100644
--- a/Elwig/Models/Entities/PaymentVar.cs
+++ b/Elwig/Models/Entities/PaymentVar.cs
@@ -17,7 +17,6 @@ namespace Elwig.Models.Entities {
 
         [Column("date")]
         public required string DateString { get; set; }
-
         [NotMapped]
         public DateOnly Date {
             get => DateOnly.ParseExact(DateString, "yyyy-MM-dd");
@@ -26,7 +25,6 @@ namespace Elwig.Models.Entities {
 
         [Column("transfer_date")]
         public string? TransferDateString { get; set; }
-
         [NotMapped]
         public DateOnly? TransferDate {
             get => TransferDateString != null ? DateOnly.ParseExact(TransferDateString, "yyyy-MM-dd") : null;
@@ -37,7 +35,9 @@ namespace Elwig.Models.Entities {
         public bool TestVariant { get; set; }
 
         [Column("calc_time")]
-        public int? CalcTime { get; set; }
+        public int? CalcTimeUnix { get; set; }
+        [NotMapped]
+        public DateTime? CalcTime => CalcTimeUnix != null ? DateTimeOffset.FromUnixTimeSeconds((long)CalcTimeUnix).UtcDateTime.ToLocalTime() : null;
 
         [Column("comment")]
         public string? Comment { get; set; }
diff --git a/Elwig/Resources/Schemas/PaymentVariantData.json b/Elwig/Resources/Schemas/PaymentVariantData.json
index 1629ebe..20feecd 100644
--- a/Elwig/Resources/Schemas/PaymentVariantData.json
+++ b/Elwig/Resources/Schemas/PaymentVariantData.json
@@ -12,6 +12,7 @@
       "consider_contract_penalties": {"type": "boolean"},
       "consider_total_penalty": {"type": "boolean"},
       "consider_auto_business_shares": {"type": "boolean"},
+      "consider_custom_modifiers": {"type": "boolean"},
       "net_weight_modifier": {"type": "number"},
       "gross_weight_modifier": {"type": "number"},
       "payment": {"$ref": "#/definitions/payment_1"},
diff --git a/Elwig/Windows/MainWindow.xaml b/Elwig/Windows/MainWindow.xaml
index 5db78e6..a37179b 100644
--- a/Elwig/Windows/MainWindow.xaml
+++ b/Elwig/Windows/MainWindow.xaml
@@ -76,25 +76,21 @@
                                     Margin="0,13,0,0" VerticalAlignment="Top" HorizontalAlignment="Center"
                                     TextChanged="SeasonInput_TextChanged"/>
 
-                <Button x:Name="DeliveryConfirmationButton" Content="Anlieferungsbestätigung"
-                        Click="DeliveryConfirmationButton_Click"
-                        Margin="0,50,195,10" Width="190"/>
-
-                <Button x:Name="PaymentButton" Content="Auszahlung"
-                        Click="PaymentButton_Click"
-                        Margin="195,50,0,10" Width="190"/>
-
                 <Button x:Name="OverUnderDeliveryButton" Content="Über-/Unterlieferungen"
                         Click="OverUnderDeliveryButton_Click"
-                        Margin="0,90,195,10" Width="190"/>
+                        Margin="0,50,195,10" Width="190"/>
 
-                <Button x:Name="PaymentAdjustmentButton" Content="Anpassung"
-                        Click="PaymentAdjustmentButton_Click" IsEnabled="False"
-                        Margin="195,90,0,10" Width="190"/>
+                <Button x:Name="DeliveryConfirmationButton" Content="Anlieferungsbestätigung"
+                        Click="DeliveryConfirmationButton_Click"
+                        Margin="195,50,0,10" Width="190"/>
 
                 <Button x:Name="BreakdownButton" Content="Sorten-/Qual.aufteilung"
                         Click="BreakdownButton_Click"
-                        Margin="0,130,195,10" Width="190"/>
+                        Margin="0,90,195,10" Width="190"/>
+
+                <Button x:Name="PaymentButton" Content="Auszahlung"
+                        Click="PaymentButton_Click"
+                        Margin="195,90,0,10" Width="190"/>
             </Grid>
         </Expander>
     </Grid>
diff --git a/Elwig/Windows/MainWindow.xaml.cs b/Elwig/Windows/MainWindow.xaml.cs
index a89c574..916a013 100644
--- a/Elwig/Windows/MainWindow.xaml.cs
+++ b/Elwig/Windows/MainWindow.xaml.cs
@@ -153,7 +153,7 @@ namespace Elwig.Windows {
         }
 
         private void SeasonFinish_Expanded(object sender, RoutedEventArgs evt) {
-            Height = 570;
+            Height = 530;
         }
 
         private void SeasonFinish_Collapsed(object sender, RoutedEventArgs evt) {
@@ -166,7 +166,6 @@ namespace Elwig.Windows {
             var valid = (s0 != null);
             DeliveryConfirmationButton.IsEnabled = valid;
             OverUnderDeliveryButton.IsEnabled = valid;
-            PaymentAdjustmentButton.IsEnabled = valid && false;
             PaymentButton.IsEnabled = valid;
             BreakdownButton.IsEnabled = valid;
         }
@@ -211,27 +210,6 @@ namespace Elwig.Windows {
             Mouse.OverrideCursor = null;
         }
 
-        private async void PaymentAdjustmentButton_Click(object sender, RoutedEventArgs evt) {
-            if (SeasonInput.Value is not int year)
-                return;
-            if (false && App.Client.IsMatzen) {
-                PaymentAdjustmentButton.IsEnabled = false;
-                Mouse.OverrideCursor = Cursors.AppStarting;
-
-                var b = new Billing(year);
-                await b.AutoAdjustBusinessShare();
-
-                Mouse.OverrideCursor = null;
-                PaymentAdjustmentButton.IsEnabled = true;
-            } else {
-                MessageBox.Show(
-                    "Es ist kein automatisches Nachzeichnen der Geschäftsanteile\n" +
-                    "für diese Genossenschaft eingestellt!\n" +
-                    "Bitte wenden Sie sich an die Programmierer!", "Fehler",
-                    MessageBoxButton.OK, MessageBoxImage.Information);
-            }
-        }
-
         private void PaymentButton_Click(object sender, RoutedEventArgs evt) {
             if (SeasonInput.Value is not int year)
                 return;
diff --git a/Elwig/Windows/PaymentVariantsWindow.xaml b/Elwig/Windows/PaymentVariantsWindow.xaml
index 634172f..3fec6e8 100644
--- a/Elwig/Windows/PaymentVariantsWindow.xaml
+++ b/Elwig/Windows/PaymentVariantsWindow.xaml
@@ -6,8 +6,7 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:Elwig.Windows"
         xmlns:ctrl="clr-namespace:Elwig.Controls"
-        mc:Ignorable="d"
-        Title="Auszahlungsvarianten - Elwig" Height="450" Width="820" MinHeight="380" MinWidth="820">
+        Title="Auszahlungsvarianten - Elwig" Height="480" Width="850" MinHeight="400" MinWidth="830">
     <Window.Resources>
         <Style TargetType="Label">
             <Setter Property="HorizontalAlignment" Value="Left"/>
@@ -142,9 +141,12 @@
             <CheckBox x:Name="ConsiderAutoInput" Content="Automatische Nachzeichnungen der GA"
                       Margin="110,155,10,10" Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Top"
                       Checked="ConsiderAutoInput_Changed" Unchecked="ConsiderAutoInput_Changed"/>
-            <Label Content="&#xF0AE;" FontFamily="Segoe MDL2 Assets" FontSize="16" Grid.Row="0" Grid.Column="1" Margin="108,175,10,10"/>
+            <CheckBox x:Name="ConsiderCustomInput" Content="Benutzerdefinierte Zu-/Abschläge pro Mitglied"
+                      Margin="110,175,10,10" Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Top"
+                      Checked="ConsiderCustomInput_Changed" Unchecked="ConsiderCustomInput_Changed"/>
+            <Label Content="&#xF0AE;" FontFamily="Segoe MDL2 Assets" FontSize="16" Grid.Row="0" Grid.Column="1" Margin="108,195,10,10"/>
 
-            <Grid Grid.Column="0" Grid.ColumnSpan="2" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="50,180,10,10">
+            <Grid Grid.Column="0" Grid.ColumnSpan="2" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="50,200,10,10">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="110"/>
                     <ColumnDefinition Width="27"/>
@@ -156,6 +158,8 @@
                     <RowDefinition Height="27"/>
                     <RowDefinition Height="5"/>
                     <RowDefinition Height="27"/>
+                    <RowDefinition Height="5"/>
+                    <RowDefinition Height="27"/>
                 </Grid.RowDefinitions>
 
                 <Grid.Resources>
@@ -184,6 +188,16 @@
                 <Button x:Name="EditButton" Content="Bearbeiten" Grid.Column="0" Grid.Row="2"
                         Click="EditButton_Click"/>
                 <Label Content="&#xF0AF;" FontFamily="Segoe MDL2 Assets" FontSize="16" Grid.Row="2" Grid.Column="1"/>
+                <Button x:Name="PaymentAdjustmentButton" Content="Anpassen" Grid.Column="0" Grid.Row="4"
+                        Click="PaymentAdjustmentButton_Click"/>
+                <Label Content="&#xF0AF;" FontFamily="Segoe MDL2 Assets" FontSize="16" Grid.Row="4" Grid.Column="1" RenderTransformOrigin="0.5,0.5" >
+                    <Label.RenderTransform>
+                        <TransformGroup>
+                            <RotateTransform Angle="-45"/>
+                            <TranslateTransform Y="-5"/>
+                        </TransformGroup>
+                    </Label.RenderTransform>
+                </Label>
                 <Button x:Name="CalculateButton" Content="Berechnen" Grid.Column="2" Grid.Row="2"
                         Click="CalculateButton_Click"/>
                 <Label Content="&#xF0AF;" FontFamily="Segoe MDL2 Assets" FontSize="16" Grid.Row="2" Grid.Column="3" x:Name="Arrow3"/>
diff --git a/Elwig/Windows/PaymentVariantsWindow.xaml.cs b/Elwig/Windows/PaymentVariantsWindow.xaml.cs
index dcb7062..9956b49 100644
--- a/Elwig/Windows/PaymentVariantsWindow.xaml.cs
+++ b/Elwig/Windows/PaymentVariantsWindow.xaml.cs
@@ -91,6 +91,7 @@ namespace Elwig.Windows {
                     ConsiderPenaltiesInput.IsChecked = BillingData.ConsiderContractPenalties;
                     ConsiderPenaltyInput.IsChecked = BillingData.ConsiderTotalPenalty;
                     ConsiderAutoInput.IsChecked = BillingData.ConsiderAutoBusinessShares;
+                    ConsiderCustomInput.IsChecked = BillingData.ConsiderCustomModifiers;
                     if (BillingData.NetWeightModifier != 0) {
                         WeightModifierInput.Text = $"{Math.Round(BillingData.NetWeightModifier * 100.0, 8)}";
                     } else if (BillingData.GrossWeightModifier != 0) {
@@ -105,6 +106,7 @@ namespace Elwig.Windows {
                     ConsiderPenaltiesInput.IsChecked = false;
                     ConsiderPenaltyInput.IsChecked = false;
                     ConsiderAutoInput.IsChecked = false;
+                    ConsiderCustomInput.IsChecked = false;
                     WeightModifierInput.Text = "";
                     DataInput.Text = v.Data;
                 }
@@ -113,6 +115,7 @@ namespace Elwig.Windows {
                 ConsiderPenaltiesInput.IsEnabled = !locked;
                 ConsiderPenaltyInput.IsEnabled = !locked;
                 ConsiderAutoInput.IsEnabled = !locked;
+                ConsiderCustomInput.IsEnabled = !locked;
                 DataInput.IsReadOnly = locked;
             } else {
                 EditButton.Content = "Bearbeiten";
@@ -153,6 +156,8 @@ namespace Elwig.Windows {
                 ConsiderPenaltyInput.IsEnabled = false;
                 ConsiderAutoInput.IsChecked = false;
                 ConsiderAutoInput.IsEnabled = false;
+                ConsiderCustomInput.IsChecked = false;
+                ConsiderCustomInput.IsEnabled = false;
                 DataInput.Text = "";
                 DataInput.IsReadOnly = true;
             }
@@ -168,6 +173,7 @@ namespace Elwig.Windows {
                 (ConsiderPenaltiesInput.IsChecked != BillingData?.ConsiderContractPenalties) ||
                 (ConsiderPenaltyInput.IsChecked != BillingData?.ConsiderTotalPenalty) ||
                 (ConsiderAutoInput.IsChecked != BillingData?.ConsiderAutoBusinessShares) ||
+                (ConsiderCustomInput.IsChecked != BillingData?.ConsiderCustomModifiers) ||
                 WeightModifierChanged);
             CalculateButton.IsEnabled = !SaveButton.IsEnabled && PaymentVariantList.SelectedItem is PaymentVar { TestVariant: true };
             CommitButton.IsEnabled = CalculateButton.IsEnabled;
@@ -295,6 +301,26 @@ namespace Elwig.Windows {
             App.FocusChartWindow(v.Year, v.AvNr);
         }
 
+        private async void PaymentAdjustmentButton_Click(object sender, RoutedEventArgs evt) {
+            if (false && App.Client.IsMatzen) {
+                PaymentAdjustmentButton.IsEnabled = false;
+                Mouse.OverrideCursor = Cursors.AppStarting;
+
+                var b = new Billing(Year);
+                await b.AutoAdjustBusinessShare();
+
+                Mouse.OverrideCursor = null;
+                PaymentAdjustmentButton.IsEnabled = true;
+            } else {
+                MessageBox.Show(
+                    "Es ist kein automatisches Nachzeichnen der Geschäftsanteile\n" +
+                    "für diese Genossenschaft eingestellt!\n" +
+                    "Bitte wenden Sie sich an die Programmierer!", "Fehler",
+                    MessageBoxButton.OK, MessageBoxImage.Information);
+            }
+        }
+
+
         private async void MailButton_Click(object sender, RoutedEventArgs evt) {
             if (PaymentVariantList.SelectedItem is not PaymentVar pv)
                 return;
@@ -471,6 +497,7 @@ namespace Elwig.Windows {
                 d.ConsiderContractPenalties = ConsiderPenaltiesInput.IsChecked ?? false;
                 d.ConsiderTotalPenalty = ConsiderPenaltyInput.IsChecked ?? false;
                 d.ConsiderAutoBusinessShares = ConsiderAutoInput.IsChecked ?? false;
+                d.ConsiderCustomModifiers = ConsiderCustomInput.IsChecked ?? false;
                 var modVal = WeightModifierInput.Text.Length > 0 ? double.Parse(WeightModifierInput.Text) : 0;
                 d.NetWeightModifier = modVal > 0 ? modVal / 100.0 : 0;
                 d.GrossWeightModifier = modVal < 0 ? modVal / 100.0 : 0;
@@ -488,6 +515,7 @@ namespace Elwig.Windows {
                 ConsiderPenaltiesInput_Changed(null, null);
                 ConsiderPenaltyInput_Changed(null, null);
                 ConsiderAutoInput_Changed(null, null);
+                ConsiderCustomInput_Changed(null, null);
                 WeightModifierInput_TextChanged(null, null);
             } catch (Exception exc) {
                 await HintContextChange();
@@ -630,6 +658,19 @@ namespace Elwig.Windows {
             UpdateSaveButton();
         }
 
+        private void ConsiderCustomInput_Changed(object? sender, RoutedEventArgs? evt) {
+            if (BillingData == null) {
+                ControlUtils.ClearInputState(ConsiderCustomInput);
+                return;
+            }
+            if (BillingData.ConsiderCustomModifiers != ConsiderCustomInput.IsChecked) {
+                ControlUtils.SetInputChanged(ConsiderCustomInput);
+            } else {
+                ControlUtils.ClearInputState(ConsiderCustomInput);
+            }
+            UpdateSaveButton();
+        }
+
         private void WeightModifierInput_TextChanged(object? sender, TextChangedEventArgs? evt) {
             var res = Validator.CheckDecimal(WeightModifierInput, false, 3, 2, true);
             if (BillingData == null) {