Sales Tax Calculator
Add or remove US sales tax from a price using the 2026 national average combined rate, or plug in your own state and local rate for an exact figure.
Net amount$1,000
VAT amount$75
Gross amount$1,075
Sales Tax in the US: Why There's No Single National Rate
Unlike most countries, the United States has no federal VAT or GST — sales tax is set entirely at the state and local level, and rates vary enormously depending on where a sale happens. This calculator uses a 2026 national average as a planning figure, but the real rate for any specific transaction depends on the state (and often city or county) involved.
What you need to know about US sales tax
- The 2026 national population-weighted average combined state-plus-local rate is about 7.53%, per the Tax Foundation — this is an illustrative planning figure only, never the actual rate for any specific address
- Combined state-plus-local rates in 2026 range from 0% (Delaware, Montana, New Hampshire, and Oregon charge no state sales tax) up to roughly 10.1% in Louisiana
- Economic nexus registration thresholds — the point at which an out-of-state seller must start collecting a state's sales tax — are set individually by each state, most commonly around $100,000 of in-state sales per year (some states add a 200-transaction trigger too), following the Supreme Court's 2018 Wayfair decision
- For an exact figure on a real invoice, look up the specific state and local rate for the delivery address rather than relying on the national average
