diff --git a/test/Core.Test/Billing/Stubs/FakeAutomaticTaxStrategy.cs b/test/Core.Test/Billing/Stubs/FakeAutomaticTaxStrategy.cs
index 253aead5c7..3e1c8ff154 100644
--- a/test/Core.Test/Billing/Stubs/FakeAutomaticTaxStrategy.cs
+++ b/test/Core.Test/Billing/Stubs/FakeAutomaticTaxStrategy.cs
@@ -32,4 +32,10 @@ public class FakeAutomaticTaxStrategy(
         options.AutomaticTax = new InvoiceAutomaticTaxOptions { Enabled = isAutomaticTaxEnabled };
 
     }
+
+    public void SetInvoiceCreatePreviewOptions(InvoiceCreatePreviewOptions options)
+    {
+        options.AutomaticTax = new InvoiceAutomaticTaxOptions { Enabled = IsAutomaticTaxEnabled };
+
+    }
 }