account-financial-tools/account_compute_tax_amount

Recompute tax amount
====================

The way the tax amount is computed in the core `account` module is prone
to input errors.

This module forces the the tax amount to always be: `credit - debit`
whatever the configuration of the tax is and whatever the user types in
the tax amount.

**Warning**: there is no guarantee that this module will work for every
country, at least it works for Switzerland and France where the tax
amount is always `credit - debit`.