From: Dane Jensen <careo@...>
Date: 2007-05-25T19:41:33+09:00
Subject: Re: Ruby tax calculation algorithm/program for federal and state income   taxes

On Fri, 25 May 2007 03:59:54 +0900, "Harry Truax" <htruax@stf.com> said:
> Hello,
>  
> I was wondering if someone could point me in the right direction as
> regards
> Federal and State income tax calculation. I would like to be able to do
> this
> without storing the entire tax table(s), but rather calculate the tax
> using
> each state's tax rate scheule (or the Federal tax rate scheulde if
> calculating federal income tax) - the number of brackets, filing status
> if
> applicable, the rates, etc., so the method would receive the taxable
> amount
> and the state (or federal) in question along with filing status and would
> return the tax amount.

I had the... pleasure... of doing this for Federal and Oregon income
taxes. For both the instruction booklets should give you most everything
you need. If the actual rates and brackets aren't there, they'll be on
the IRS's site and whatever state department of revenue you're working
with.

Just how accurate are you trying to be? 

-Dane