diff --git a/lib/data/models/mixins/invoice_mixin.dart b/lib/data/models/mixins/invoice_mixin.dart
index 3769a000b..8da3af23d 100644
--- a/lib/data/models/mixins/invoice_mixin.dart
+++ b/lib/data/models/mixins/invoice_mixin.dart
@@ -259,8 +259,9 @@ abstract class CalculateInvoiceTotal {
     if (!usesInclusiveTaxes) {
       final double taxAmount1 = round(total * taxRate1 / 100, precision);
       final double taxAmount2 = round(total * taxRate2 / 100, precision);
+      final double taxAmount3 = round(total * taxRate3 / 100, precision);
 
-      total += itemTax + taxAmount1 + taxAmount2;
+      total += itemTax + taxAmount1 + taxAmount2 + taxAmount3;
     }
 
     if (customSurcharge1 != 0.0 && !customTaxes1) {
diff --git a/lib/ui/invoice/edit/invoice_edit_desktop.dart b/lib/ui/invoice/edit/invoice_edit_desktop.dart
index 8b58d7b33..60604a151 100644
--- a/lib/ui/invoice/edit/invoice_edit_desktop.dart
+++ b/lib/ui/invoice/edit/invoice_edit_desktop.dart
@@ -843,6 +843,10 @@ class InvoiceEditDesktopState extends State<InvoiceEditDesktop>
                               invoice.taxName3.isNotEmpty)
                             TaxRateDropdown(
                               onSelected: (taxRate) {
+                                final updatedInvoice =
+                                    invoice.applyTax(taxRate, isThird: true);
+                                print(
+                                    '## UPDATED\nRate 3: ${updatedInvoice.taxName3} => ${updatedInvoice.taxRate3}');
                                 viewModel.onChanged(
                                     invoice.applyTax(taxRate, isThird: true));
                               },