Practical guides on reverse sales tax, tax formulas, state rates, VAT, and receipt math.
Reverse sales tax lets you work backwards from a total price to find the original pre-tax amount. Here is the formula, the logic, and practical examples.
Read articleNeed to strip tax out of a final total? This guide walks through the exact formula and shows how to use it correctly.
Read articleA reference guide to US sales tax rates by state, with context on state base rates, local add-ons, and combined totals.
Read articleSales tax and VAT both affect the final price, but the systems behind them are very different. This guide explains how.
Read articleThe formula to work backwards from a tax-included price is straightforward. This post breaks it down with examples and edge cases.
Read articleIn most US states, shelf prices do not include tax. This guide explains why the final receipt total often looks higher.
Read articleLooking for a local rate?
Use our reverse sales tax calculator by state to start with a supported state or city page.