Automated calculation of out-of-state sales tax due?

[jimr]

Hi,

If I want to calculate state sales tax due on out-of-state purchases
automatically,
would the recommended way be to use Automated Transactions and match
on
some sub account name that lets me identify the non-local-state
business?

E.g., would this be reasonable:

= /:Amazon$/
        (Liabilities:Tax:CA)    -0.0925


2010/12/10 Minimal Expectations - Dicky Charles
        Expenses:eBook:Amazon                           $9.99
        Liabilities:AT&T Universal MasterCard

2010/12/10 Vase
        Expenses:Gifts:Amazon                           $57.82
        Liabilities:AT&T Universal MasterCard

Or is there some other syntax that would be considered a better fit
for
this purpose?

Jim