Is there a personal finance manager that, in split transactions, has a separate column for the sales tax allocable to each item? I don't have that in Microsoft Money, and from what I understand, Quicken doesn't have it either.
closed as off topic by Sathya♦ Feb 28 at 14:40
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Since Quicken allows you to do a split transaction and you are able to allocate the parts of the receipt to different categories it should work for you. Even if you wanted to categorize different tax rates for different counties, you can always create your own categories.
If you are speaking about business use on the invoicing side, you can probably do this as well, but there is a default sales tax category.
I do not have much experience in this area, but did you try GnuCash? It is free.