How to calculate tax if amount incl. tax in Free Text Invoice

[Luegisdorf]

Hi there

The Free Text Invoice calculates the taxes basing on the invoice amount
excl. taxes.

I want to change it now in that way, that the given amounts are incl. taxes.

But how to do;
I guess that a modification in the following classes must be done:
- TaxFreeInvoice
- CustFreeInvoiceCalcTotals
- CustInvoiceCalcTax_Table

But It looks so complex - I have not any idea where to customize.

Can anyone give me a hint?

Thank you and best regards
Patrick

[Luegisdorf]

Solved it that way: Just create a salesLine on the fly and get the tax
information from there ...