Sales Tax & VAT Calculator
Add or remove sales tax, VAT or GST from a price. Enter your own rate to compute the tax amount, pre-tax price and gross total — with a full breakdown and common country presets.
Input
In Remove mode this is the gross (tax-inclusive) amount.
Pick a country preset, or choose Custom to enter your own rate.
Output
| Metric | Value |
|---|---|
| No data yet | |
Guides
Work out sales tax, VAT or GST on any price in seconds. Enter your own rate and the calculator returns the tax amount, the pre-tax (net) price and the gross total, plus a clear breakdown you can copy or download. The same math powers sales tax, value-added tax (VAT) and goods-and-services tax (GST) — only the name and the rate change — so one tool covers every jurisdiction.
Two modes: add tax or remove tax
Add tax treats your price as tax-exclusive (the net amount). It multiplies the price by the rate to get the tax, then adds it on:
- Tax amount = price × rate ÷ 100
- Total = price + tax amount
Use this when you have a pre-tax figure and need the final, tax-inclusive price a customer pays.
Remove tax treats your price as tax-inclusive (the gross amount) and works backwards to find the tax already baked in. This is not the add calculation reversed — you divide, you don't subtract a percentage:
- Pre-tax price = price ÷ (1 + rate ÷ 100)
- Tax amount = price − pre-tax price
Use this when you have a receipt total and need the net price and the tax portion — for expense claims, bookkeeping or reclaiming VAT. Subtracting the rate as a flat percentage of the gross figure is a common mistake and gives the wrong answer; dividing is the correct method.
Common rate presets
Pick a country from the Common Rate list to fill in a standard rate automatically — UK VAT (20%), Germany (19%), Netherlands (21%), Australia GST (10%), Canada GST (5%), Singapore GST (9%) and more. Choose Custom rate to type any rate yourself, which is what you want for US state and local sales tax (there is no single national rate) or any rate not in the list.
Worked examples
- Adding 20% VAT to a $100 net price → $20 tax, $120 total.
- Removing 20% VAT from a $120 gross price → $100 net, $20 tax. Note the tax is $20, not the $24 you would wrongly get by taking 20% of $120.
- US sales tax of 8.25% on $49.99 → $4.12 tax, $54.11 total.
Is VAT the same as sales tax?
The arithmetic here is identical, so this calculator handles both. The real-world difference is how they are collected: sales tax is charged once at the final point of sale, while VAT and GST are collected at each stage of the supply chain with businesses reclaiming the tax they paid. For a one-off price calculation, the rate is all that matters.
Why does removing tax use division?
Because the rate was applied to the net price, not the gross one. If a $100 net price became $120 after 20% tax, the $20 of tax is 20% of $100 — which is only about 16.7% of the $120 gross. Dividing the gross by 1.20 recovers the original net price exactly.
Everything runs entirely in your browser — no prices or figures are sent to a server.