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Avalara Help Center

What date does Avalara use to calculate tax?


You want to know what date Avalara uses to calculate tax.


Avalara AvaTax


  • We use the Tax Calculation date
    • Most accounting systems send the Invoice date as the tax calculation date, so your transaction will show the Document date and Tax Calculation date as the same date.
    • The Tax Calculation date on a return invoice is usually the date of the original sale, so it does not match the Document date