Re: Cumulative Tax feature

["Chris Travers" <..hidden..>]

This sounds like a major undertaking but a major opportunity for
Brazilian software developers.

The simple way to do this would be to:
1)  Create a set of tax tables.
2)  Create a stored procedure that looks up the rate from the tax
tables and updates the other tax record appropriately.
3)  Create a cron job that calls the stored procedure.

90% of the work is going to be in creating and maintaining the tax
tables.  My suggestion is to team up with an accountant who is willing
to sell tax table updates on a subscription basis.  This way there is
continuing money to be spent on maintenance when the tax rates change.

A business would be free to enter and/or maintain the tax tables
themselves and still use your modifications, but they would also have
the option of paying someone else (the accountant) to do that work for
them.  The accountant would of course require some infrastructure
assistance (getting the data into PostgreSQL formats) and this is
where your opportunity would exist.

Best Wishes,
Chris Travers