diff --git a/Elwig/Windows/PaymentVariantsWindow.xaml b/Elwig/Windows/PaymentVariantsWindow.xaml
index bfada81..3991b8c 100644
--- a/Elwig/Windows/PaymentVariantsWindow.xaml
+++ b/Elwig/Windows/PaymentVariantsWindow.xaml
@@ -85,6 +85,17 @@
 
         <GroupBox Header="Abschluss" Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="2" Margin="10,0,10,10">
             <Grid>
+                <Button x:Name="CommitButton" FontSize="12" Width="160" Height="40" Margin="0,0,10,55"
+                        Click="CommitButton_Click"
+                        VerticalAlignment="Bottom" HorizontalAlignment="Right">
+                    <TextBlock TextAlignment="Center">Traubengutschriften<LineBreak/>erstellen</TextBlock>
+                </Button>
+                <Button x:Name="RevertButton" FontSize="12" Width="160" Height="40" Margin="0,0,10,10"
+                        Click="RevertButton_Click"
+                        VerticalAlignment="Bottom" HorizontalAlignment="Right">
+                    <TextBlock TextAlignment="Center">Traubengutschriften<LineBreak/>löschen</TextBlock>
+                </Button>
+
                 <ProgressBar x:Name="ProgressBar" Margin="10,0,0,74" Height="27" Width="180"
                              VerticalAlignment="Bottom" HorizontalAlignment="Left"/>
                 <Button x:Name="ShowButton" Content="Vorschau" FontSize="14" Width="180" Margin="10,10,10,42" Height="27" Tag="Print" IsEnabled="False"
diff --git a/Elwig/Windows/PaymentVariantsWindow.xaml.cs b/Elwig/Windows/PaymentVariantsWindow.xaml.cs
index 94e8abb..8b3d9bf 100644
--- a/Elwig/Windows/PaymentVariantsWindow.xaml.cs
+++ b/Elwig/Windows/PaymentVariantsWindow.xaml.cs
@@ -30,9 +30,11 @@ namespace Elwig.Windows {
 
         private void Update() {
             if (PaymentVariantList.SelectedItem is PaymentVar v) {
-                var locked = v.TransferDate != null || !v.TestVariant;
+                var locked = !v.TestVariant;
                 DeleteButton.IsEnabled = !locked;
                 CalculateButton.IsEnabled = !locked;
+                CommitButton.IsEnabled = !locked;
+                RevertButton.IsEnabled = locked;
                 CopyButton.IsEnabled = true;
                 EditButton.IsEnabled = true;
                 ShowButton.IsEnabled = true;
@@ -44,6 +46,8 @@ namespace Elwig.Windows {
                 EditButton.IsEnabled = false;
                 CopyButton.IsEnabled = false;
                 CalculateButton.IsEnabled = false;
+                CommitButton.IsEnabled = false;
+                RevertButton.IsEnabled = false;
                 DeleteButton.IsEnabled = false;
                 ShowButton.IsEnabled = false;
                 PrintButton.IsEnabled = false;
@@ -94,6 +98,30 @@ namespace Elwig.Windows {
             await Generate(2);
         }
 
+        private async void CommitButton_Click(object sender, RoutedEventArgs e) {
+            if (PaymentVariantList.SelectedValue is not PaymentVar v)
+                return;
+            CommitButton.IsEnabled = false;
+            Mouse.OverrideCursor = Cursors.AppStarting;
+            var b = new BillingVariant(v.Year, v.AvNr);
+            await b.Commit();
+            Mouse.OverrideCursor = null;
+            RevertButton.IsEnabled = true;
+            await HintContextChange();
+        }
+
+        private async void RevertButton_Click(object sender, RoutedEventArgs e) {
+            if (PaymentVariantList.SelectedValue is not PaymentVar v)
+                return;
+            RevertButton.IsEnabled = false;
+            Mouse.OverrideCursor = Cursors.AppStarting;
+            var b = new BillingVariant(v.Year, v.AvNr);
+            await b.Revert();
+            Mouse.OverrideCursor = null;
+            CommitButton.IsEnabled = true;
+            await HintContextChange();
+        }
+
         private async Task Generate(int mode) {
             if (PaymentVariantList.SelectedItem is not PaymentVar v)
                 return;