diff --git a/Elwig/Documents/CreditNote.cs b/Elwig/Documents/CreditNote.cs
index 4a8ac16..7a15b12 100644
--- a/Elwig/Documents/CreditNote.cs
+++ b/Elwig/Documents/CreditNote.cs
@@ -40,8 +40,14 @@ namespace Elwig.Documents {
             Payment = p;
             Credit = p.Credit;
             var season = p.Variant.Season;
+            if (considerCustomModifiers) {
+                CustomPayment = ctx.CustomPayments.Find(p.Year, p.MgNr);
+            }
+
             var mod = App.Client.IsMatzen ? ctx.Modifiers.Where(m => m.Year == season.Year && m.Name.StartsWith("Treue")).FirstOrDefault() : null;
-            if (mod != null) {
+            if (CustomPayment?.ModComment != null) {
+                MemberModifier = CustomPayment.ModComment;
+            } else if (mod != null) {
                 MemberModifier = $"{mod.Name} ({mod.ValueStr})";
             } else {
                 MemberModifier = "Sonstige Zu-/Abschläge";
@@ -88,8 +94,5 @@ namespace Elwig.Documents {
                     .Where(u => u.Item3 != 0)
                     .ToList();
             }
-            if (considerCustomModifiers) {
-                CustomPayment = ctx.CustomPayments.Find(p.Year, p.MgNr);
-            }
         }
     }}
diff --git a/Elwig/Documents/CreditNote.cshtml b/Elwig/Documents/CreditNote.cshtml
index 3dede94..4dd0b4f 100644
--- a/Elwig/Documents/CreditNote.cshtml
+++ b/Elwig/Documents/CreditNote.cshtml
@@ -157,9 +157,9 @@
                 @Raw(FormatRow($"Autom. Nachz. von GA ({Model.MemberAutoBusinessShares})", Model.MemberAutoBusinessSharesAmount, add: true));
                 penalty += Model.MemberAutoBusinessSharesAmount;
             }
-            @if (Model.CustomPayment != null) {
-                @Raw(FormatRow(Model.CustomPayment.Comment ?? (Model.CustomPayment.Amount < 0 ? "Weitere Abzüge" : "Weitere Zuschläge"), Model.CustomPayment.Amount, add: true));
-                penalty += Model.CustomPayment.Amount;
+            @if (Model.CustomPayment?.Amount != null) {
+                @Raw(FormatRow(Model.CustomPayment.Comment ?? ((Model.CustomPayment.Amount.Value) < 0 ? "Weitere Abzüge" : "Weitere Zuschläge"), Model.CustomPayment.Amount.Value, add: true));
+                penalty += Model.CustomPayment.Amount.Value;
             }
 
             @if (Model.Credit == null) {
diff --git a/Elwig/Helpers/AppDbUpdater.cs b/Elwig/Helpers/AppDbUpdater.cs
index 3af451e..bf02d55 100644
--- a/Elwig/Helpers/AppDbUpdater.cs
+++ b/Elwig/Helpers/AppDbUpdater.cs
@@ -9,7 +9,7 @@ namespace Elwig.Helpers {
     public static class AppDbUpdater {
 
         // Don't forget to update value in Tests/fetch-resources.bat!
-        public static readonly int RequiredSchemaVersion = 27;
+        public static readonly int RequiredSchemaVersion = 28;
 
         private static int VersionOffset = 0;
 
diff --git a/Elwig/Helpers/Billing/BillingVariant.cs b/Elwig/Helpers/Billing/BillingVariant.cs
index 3afafdb..721356f 100644
--- a/Elwig/Helpers/Billing/BillingVariant.cs
+++ b/Elwig/Helpers/Billing/BillingVariant.cs
@@ -29,6 +29,8 @@ namespace Elwig.Helpers.Billing {
             await CalculatePrices(cnx);
             if (Data.ConsiderDelieryModifiers) {
                 await CalculateDeliveryModifiers(cnx);
+            }
+            if (Data.ConsiderCustomModifiers) {
                 await CalculateMemberModifiers(cnx);
             }
             await tx.CommitAsync();
@@ -128,6 +130,16 @@ namespace Elwig.Helpers.Billing {
                         mod_rel = mod_rel + excluded.mod_rel
                     """);
             }
+            await AppDbContext.ExecuteBatch(cnx, $"""
+                INSERT INTO payment_member (year, avnr, mgnr, net_amount, mod_abs, mod_rel)
+                SELECT x.year, {AvNr}, x.mgnr, 0, COALESCE(x.mod_abs * POW(10, s.precision - 2), 0), COALESCE(x.mod_rel, 0)
+                FROM payment_custom x
+                    JOIN season s ON s.year = x.year
+                WHERE x.year = {Year}
+                ON CONFLICT DO UPDATE
+                SET mod_abs = mod_abs + excluded.mod_abs,
+                    mod_rel = mod_rel + excluded.mod_rel
+                """);
         }
 
         protected async Task CalculatePrices(SqliteConnection cnx) {
diff --git a/Elwig/Models/Entities/PaymentCustom.cs b/Elwig/Models/Entities/PaymentCustom.cs
index 549ad2a..04416ec 100644
--- a/Elwig/Models/Entities/PaymentCustom.cs
+++ b/Elwig/Models/Entities/PaymentCustom.cs
@@ -11,12 +11,31 @@ namespace Elwig.Models.Entities {
         [Column("mgnr")]
         public int MgNr { get; set; }
 
-        [Column("amount")]
-        public long AmountValue { get; set; }
+        [Column("mod_abs")]
+        public long? ModAbsValue { get; set; }
         [NotMapped]
-        public decimal Amount {
-            get => Utils.DecFromDb(AmountValue, 2);
-            set => AmountValue = Utils.DecToDb(value, 2);
+        public decimal? ModAbs {
+            get => ModAbsValue != null ? Utils.DecFromDb(ModAbsValue.Value, 2) : null;
+            set => ModAbsValue = value != null ? Utils.DecToDb(value.Value, 2) : null;
+        }
+
+        [Column("mod_rel")]
+        public double? ModRelValue { get; set; }
+        [NotMapped]
+        public decimal? ModRel {
+            get => ModRelValue != null ? (decimal)ModRelValue.Value : null;
+            set => ModRelValue = value != null ? (double)value.Value : null;
+        }
+
+        [Column("mod_comment")]
+        public string? ModComment { get; set; }
+
+        [Column("amount")]
+        public long? AmountValue { get; set; }
+        [NotMapped]
+        public decimal? Amount {
+            get => AmountValue != null ? Utils.DecFromDb(AmountValue.Value, 2) : null;
+            set => AmountValue = value != null ? Utils.DecToDb(value.Value, 2) : null;
         }
 
         [Column("comment")]
diff --git a/Elwig/Resources/Sql/27-28.sql b/Elwig/Resources/Sql/27-28.sql
new file mode 100644
index 0000000..25c9b17
--- /dev/null
+++ b/Elwig/Resources/Sql/27-28.sql
@@ -0,0 +1,13 @@
+-- schema version 27 to 28
+
+ALTER TABLE payment_custom ADD COLUMN mod_abs INTEGER DEFAULT NULL;
+ALTER TABLE payment_custom ADD COLUMN mod_rel REAL DEFAULT NULL;
+ALTER TABLE payment_custom ADD COLUMN mod_comment TEXT DEFAULT NULL;
+
+PRAGMA writable_schema = ON;
+
+UPDATE sqlite_schema SET sql = REPLACE(REPLACE(sql, 'amount  INTEGER NOT NULL', 'amount      INTEGER DEFAULT NULL'), 'comment TEXT', 'comment     TEXT    DEFAULT NULL')
+WHERE type = 'table' AND name = 'payment_custom';
+
+PRAGMA schema_version = 2701;
+PRAGMA writable_schema = OFF;
diff --git a/Elwig/Windows/PaymentAdjustmentWindow.xaml b/Elwig/Windows/PaymentAdjustmentWindow.xaml
index c911898..c29d2f0 100644
--- a/Elwig/Windows/PaymentAdjustmentWindow.xaml
+++ b/Elwig/Windows/PaymentAdjustmentWindow.xaml
@@ -6,7 +6,7 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:Elwig.Windows"
         xmlns:ctrl="clr-namespace:Elwig.Controls"
-        Title="Auszahlung anpassen - Elwig" Height="600" Width="1000" MinHeight="400" MinWidth="850">
+        Title="Auszahlung anpassen - Elwig" Height="600" Width="1000" MinHeight="560" MinWidth="850">
     <Window.Resources>
         <ctrl:UnitConverter x:Key="CurrencyConverter" Precision="2" Unit="€"/>
         <ctrl:UnitConverter x:Key="WeightConverter" Precision="0" Unit="kg"/>
@@ -83,6 +83,20 @@
                             </Style>
                         </DataGridTextColumn.CellStyle>
                     </DataGridTextColumn>
+                    <DataGridTextColumn Header="Abs." Binding="{Binding ModAbs, Converter={StaticResource CurrencyConverter}, StringFormat='{}{0} '}" Width="65">
+                        <DataGridTextColumn.CellStyle>
+                            <Style>
+                                <Setter Property="TextBlock.TextAlignment" Value="Right"/>
+                            </Style>
+                        </DataGridTextColumn.CellStyle>
+                    </DataGridTextColumn>
+                    <DataGridTextColumn Header="Rel." Binding="{Binding ModRel, StringFormat='{}{0:P2} '}" Width="65">
+                        <DataGridTextColumn.CellStyle>
+                            <Style>
+                                <Setter Property="TextBlock.TextAlignment" Value="Right"/>
+                            </Style>
+                        </DataGridTextColumn.CellStyle>
+                    </DataGridTextColumn>
                     <DataGridTextColumn Header="Ü.-/U.-Lfrg." Binding="{Binding OverUnder, Converter={StaticResource WeightConverter},StringFormat='{}{0} '}" Width="70">
                         <DataGridTextColumn.CellStyle>
                             <Style>
@@ -118,7 +132,7 @@
                             </Style>
                         </DataGridTextColumn.CellStyle>
                     </DataGridTextColumn>
-                    <DataGridTextColumn Header="Weitere" Binding="{Binding Custom, Converter={StaticResource CurrencyConverter}, StringFormat='{}{0} '}" Width="65">
+                    <DataGridTextColumn Header="Weitere" Binding="{Binding CustomAmount, Converter={StaticResource CurrencyConverter}, StringFormat='{}{0} '}" Width="65">
                         <DataGridTextColumn.CellStyle>
                             <Style>
                                 <Setter Property="TextBlock.TextAlignment" Value="Right"/>
@@ -139,7 +153,7 @@
         <GridSplitter Grid.Column="1" Grid.Row="1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
 
         <Grid Grid.Column="2" Grid.Row="1">
-            <GroupBox Header="Benutzerdefinierte Zu-/Abschläge" Margin="5,10,10,10" Height="180" Width="365"
+            <GroupBox Header="Benutzerdefinierte Zu-/Abschläge" Margin="5,10,10,10" Height="270" Width="365"
                       VerticalAlignment="Top" HorizontalAlignment="Left">
                 <Grid>
                     <Label Content="Mitglied:" Margin="10,10,10,10"/>
@@ -153,12 +167,23 @@
                             Margin="10,10,10,10" VerticalAlignment="Top" HorizontalAlignment="Right" ToolTip="Zu Mitglied springen"
                             Click="MemberReferenceButton_Click"/>
 
-                    <Label Content="Betrag:" Margin="10,40,10,10"/>
-                    <ctrl:UnitTextBox x:Name="CustomAmountInput" Width="80" Margin="70,40,10,10" Unit="€"
+                    <Label Content="Vor MwSt." Margin="70,37.5,10,10"/>
+                    <Label Content="Betrag:" Margin="10,60,10,10"/>
+                    <ctrl:UnitTextBox x:Name="CustomModAbsInput" Width="80" Margin="70,60,10,10" Unit="€"
+                                      TextChanged="CustomModAbsInput_TextChanged"/>
+                    <ctrl:UnitTextBox x:Name="CustomModRelInput" Width="60" Margin="155,60,10,10" Unit="%"
+                                      TextChanged="CustomModRelInput_TextChanged"/>
+
+                    <Label Content="Freitext:" Margin="10,90,10,10"/>
+                    <TextBox x:Name="CustomModCommentInput" Margin="70,90,10,10"/>
+
+                    <Label Content="Nach MwSt." Margin="70,117.5,10,10"/>
+                    <Label Content="Betrag:" Margin="10,140,10,10"/>
+                    <ctrl:UnitTextBox x:Name="CustomAmountInput" Width="80" Margin="70,140,10,10" Unit="€"
                                       TextChanged="CustomAmountInput_TextChanged"/>
 
-                    <Label Content="Freitext:" Margin="10,70,10,10"/>
-                    <TextBox x:Name="CustomCommentInput" Margin="70,70,10,10"/>
+                    <Label Content="Freitext:" Margin="10,170,10,10"/>
+                    <TextBox x:Name="CustomCommentInput" Margin="70,170,10,10"/>
 
                     <Button x:Name="SaveCustomButton" Content="Speichern" Margin="0,0,125,10" Width="120"
                             HorizontalAlignment="Center" VerticalAlignment="Bottom"
diff --git a/Elwig/Windows/PaymentAdjustmentWindow.xaml.cs b/Elwig/Windows/PaymentAdjustmentWindow.xaml.cs
index a887f98..d0c79dc 100644
--- a/Elwig/Windows/PaymentAdjustmentWindow.xaml.cs
+++ b/Elwig/Windows/PaymentAdjustmentWindow.xaml.cs
@@ -103,7 +103,7 @@ namespace Elwig.Windows {
                         }).Sum() : (decimal?)null,
                     m.Adjust,
                     m.AdjustAmount,
-                    Custom = CustomPayments!.GetValueOrDefault(m.MgNr, null)?.Amount,
+                    Custom = CustomPayments!.GetValueOrDefault(m.MgNr, null),
                 })
                 .Select(m => new {
                     m.MgNr, m.Name, m.GivenName,
@@ -112,23 +112,25 @@ namespace Elwig.Windows {
                     PenaltyAc = m.PenaltyAc == null ? (decimal?)null : Math.Round((decimal)m.PenaltyAc, 2),
                     m.Adjust,
                     AdjustAmount = m.AdjustAmount == null ? (decimal?)null : Math.Round((decimal)m.AdjustAmount, 2),
-                    m.Custom
+                    CustomAmount = m.Custom?.Amount,
+                    ModAbs = m.Custom?.ModAbs,
+                    ModRel = m.Custom?.ModRel,
                 })
                 .Select(m => new {
                     m.MgNr, m.Name, m.GivenName,
                     m.BusinessShares, m.Weight, m.OverUnder,
-                    m.PenaltyBs, m.PenaltyAc, m.Adjust, m.AdjustAmount, m.Custom,
-                    Total = (m.PenaltyBs ?? 0) + (m.PenaltyAc ?? 0) + (m.AdjustAmount ?? 0) + (m.Custom ?? 0),
+                    m.PenaltyBs, m.PenaltyAc, m.Adjust, m.AdjustAmount, m.CustomAmount, m.ModAbs, m.ModRel,
+                    Total = (m.PenaltyBs ?? 0) + (m.PenaltyAc ?? 0) + (m.AdjustAmount ?? 0) + (m.CustomAmount ?? 0),
                 })
                 .Select(m => new {
                     m.MgNr, m.Name, m.GivenName,
                     m.BusinessShares, m.Weight, m.OverUnder,
-                    m.PenaltyBs, m.PenaltyAc, m.Adjust, m.AdjustAmount, m.Custom,
+                    m.PenaltyBs, m.PenaltyAc, m.Adjust, m.AdjustAmount, m.CustomAmount, m.ModAbs, m.ModRel,
                     m.Total,
                     Background = m.Weight == 0 ? Brushes.Orange : m.Weight / 2 < -m.Total ? Brushes.Red : Brushes.White,
                     Foreground = m.Total == 0 ? Brushes.Gray : Brushes.Black,
                 })
-                .Where(m => m.OverUnder != null || m.Adjust != null || m.PenaltyBs != null || m.PenaltyAc != null || m.Custom != null)
+                .Where(m => m.OverUnder != null || m.Adjust != null || m.PenaltyBs != null || m.PenaltyAc != null || m.CustomAmount != null || m.ModAbs != null || m.ModRel != null)
                 .OrderByDescending(m => m.OverUnder ?? 0)
                 .ThenBy(m => m.Name)
                 .ThenBy(m => m.GivenName)
@@ -141,7 +143,7 @@ namespace Elwig.Windows {
             PenaltyBusinessShares.Text = $"{list.Count(r => r.PenaltyBs != null && r.PenaltyBs != 0)} Mg. / {list.Sum(r => r.PenaltyBs):N2} {sym}";
             PenaltyAreaCommitments.Text = $"{list.Count(r => r.PenaltyAc != null && r.PenaltyAc != 0)} Mg. / {list.Sum(r => r.PenaltyAc):N2} {sym}";
             AutoBusinessShareAdjustment.Text = $"{list.Count(r => r.Adjust > 0)} Mg. / {list.Sum(r => r.Adjust)} GA / {list.Sum(r => r.AdjustAmount):N2} {sym}";
-            CustomModifiers.Text = $"{list.Count(r => r.Custom != null)} Mg. / {list.Sum(r => r.Custom):N2} {sym}";
+            CustomModifiers.Text = $"{list.Count(r => r.CustomAmount != null)} Mg. / {list.Sum(r => r.CustomAmount):N2} {sym}";
             TotalModifiers.Text = $"{list.Count(r => r.Total != 0)} Mg. / {list.Sum(r => r.Total):N2} {sym}";
             NonDeliveries.Text = $"{list.Count(r => r.Weight == 0):N0}";
 
@@ -239,13 +241,22 @@ namespace Elwig.Windows {
                     MemberList.ScrollIntoView(MemberList.SelectedItem);
 
                 if (CustomPayments?.TryGetValue(m.MgNr, out var p) == true) {
+                    CustomModAbsInput.Text = $"{p.ModAbs:N2}";
+                    CustomModRelInput.Text = $"{p.ModRel * 100:N2}";
+                    CustomModCommentInput.Text = p.ModComment ?? "";
                     CustomAmountInput.Text = $"{p.Amount:N2}";
                     CustomCommentInput.Text = p.Comment ?? "";
                 } else {
+                    CustomModAbsInput.Text = "";
+                    CustomModRelInput.Text = "";
+                    CustomModCommentInput.Text = "";
                     CustomAmountInput.Text = "";
                     CustomCommentInput.Text = "";
                 }
             } else {
+                CustomModAbsInput.Text = "";
+                CustomModRelInput.Text = "";
+                CustomModCommentInput.Text = "";
                 CustomAmountInput.Text = "";
                 CustomCommentInput.Text = "";
             }
@@ -256,6 +267,14 @@ namespace Elwig.Windows {
             App.FocusMember(m.MgNr);
         }
 
+        private void CustomModAbsInput_TextChanged(object sender, TextChangedEventArgs evt) {
+            Validator.CheckDecimal((TextBox)sender, false, 4, 2, true);
+        }
+
+        private void CustomModRelInput_TextChanged(object sender, TextChangedEventArgs evt) {
+            Validator.CheckDecimal((TextBox)sender, false, 3, 2, true);
+        }
+
         private void CustomAmountInput_TextChanged(object sender, TextChangedEventArgs evt) {
             Validator.CheckDecimal((TextBox)sender, false, 4, 2, true);
         }
@@ -268,12 +287,19 @@ namespace Elwig.Windows {
                 if (CustomPayments?.TryGetValue(m.MgNr, out var p) == true) {
                     ctx.Remove(p);
                 }
-                if (sender == SaveCustomButton && decimal.TryParse(CustomAmountInput.Text, out var num)) {
+                if (sender == SaveCustomButton) {
+                    var modAbs = decimal.TryParse(CustomModAbsInput.Text, out var n1) ? (decimal?)n1 : null;
+                    var modRel = decimal.TryParse(CustomModRelInput.Text, out var n2) ? (decimal?)n2 / 100 : null;
+                    var amount = decimal.TryParse(CustomAmountInput.Text, out var n3) ? (decimal?)n3 : null;
+                    var modText = CustomModCommentInput.Text.Trim();
                     var text = CustomCommentInput.Text.Trim();
                     ctx.Add(new PaymentCustom {
                         MgNr = m.MgNr,
                         Year = Year,
-                        Amount = num,
+                        ModAbs = modAbs,
+                        ModRel = modRel,
+                        ModComment = modText == "" ? null : modText,
+                        Amount = amount,
                         Comment = text == "" ? null : text,
                     });
                 }
diff --git a/Elwig/Windows/PaymentVariantsWindow.xaml b/Elwig/Windows/PaymentVariantsWindow.xaml
index a5e8183..f934a17 100644
--- a/Elwig/Windows/PaymentVariantsWindow.xaml
+++ b/Elwig/Windows/PaymentVariantsWindow.xaml
@@ -128,6 +128,12 @@
                               HorizontalAlignment="Left" VerticalAlignment="Top"
                               TextChanged="WeightModifierInput_TextChanged" LostFocus="WeightModifierInput_LostFocus"/>
 
+            <TextBlock x:Name="MatzenNote" Grid.ColumnSpan="2" Margin="20,170,10,10" HorizontalAlignment="Left" VerticalAlignment="Top">
+                Ob ein Mitglied den Treuebonus<LineBreak/>
+                bekommt ist in der Buchungsliste<LineBreak/>
+                (Spalte Zuschlag) ersichtlich.
+            </TextBlock>
+
             <Label Content="Berücksichtigen:" Margin="90,70,10,10" Grid.Column="1"/>
             <CheckBox x:Name="ConsiderModifiersInput" Content="Zu-/Abschläge bei Lieferungen"
                       Margin="110,95,10,10" Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Top"
diff --git a/Elwig/Windows/PaymentVariantsWindow.xaml.cs b/Elwig/Windows/PaymentVariantsWindow.xaml.cs
index 017a5a5..bc77de0 100644
--- a/Elwig/Windows/PaymentVariantsWindow.xaml.cs
+++ b/Elwig/Windows/PaymentVariantsWindow.xaml.cs
@@ -44,6 +44,11 @@ namespace Elwig.Windows {
             if (!App.Config.Debug) {
                 DataInput.Visibility = Visibility.Hidden;
             }
+            if (App.Client.IsMatzen) {
+                ConsiderCustomInput.Content = ConsiderCustomInput.Content.ToString()?.Replace("Benutzerdefinierte", "Bentz.def.").Replace("Mitglied", "Mg.") + " (inkl. Treuebonus)";
+            } else {
+                MatzenNote.Visibility = Visibility.Hidden;
+            }
         }
 
         protected override async Task OnRenewContext(AppDbContext ctx) {
diff --git a/Tests/fetch-resources.bat b/Tests/fetch-resources.bat
index cc906b6..ebc454b 100644
--- a/Tests/fetch-resources.bat
+++ b/Tests/fetch-resources.bat
@@ -1 +1 @@
-curl --fail -s -L "https://elwig.at/files/create.sql?v=27" -u "elwig:ganzGeheim123!" -o "Resources\Sql\Create.sql"
+curl --fail -s -L "https://elwig.at/files/create.sql?v=28" -u "elwig:ganzGeheim123!" -o "Resources\Sql\Create.sql"