Sales Tax vs VAT: A Complete Guide for Shoppers and Sellers
Why US prices jump at the register while European prices don't, the real difference between sales tax and VAT, and how to calculate each.
Shop in New York and the price rings up higher than the sticker. Shop in London and it rings up exactly as labeled. The reason is two different approaches to consumption tax: sales tax and VAT. They end up taxing your spending either way, but they work very differently, and that matters whether you're a shopper or a seller.
Sales tax: added once, at the end
Sales tax is charged a single time, at the final sale to the consumer. The retailer collects it and passes it to the government. In the US it's set locally, so the rate varies by state, county and city, which is exactly why shelf prices are shown pre-tax: the final amount depends on where you're standing.
VAT: collected in stages
Value Added Tax is charged at every step of the supply chain, each business pays VAT on what it buys and charges VAT on what it sells, reclaiming the difference. By the time a product reaches you, the tax is baked into the displayed price. You pay it, but you rarely see it broken out.
Side by side
| Sales Tax (e.g. US) | VAT (e.g. UK/EU) | |
|---|---|---|
| Charged | Once, at final sale | At each supply-chain stage |
| Shown in price? | Added at checkout | Included on the shelf |
| Rate set by | State / local | National government |
| Typical range | 0–~10% | ~5–27% |
| Who remits it | The final retailer | Every business in the chain |
The math you actually need
Both come down to a simple percentage calculation:
- Add tax to a net price: multiply by (1 + rate). A $100 item with 8% sales tax = 100 × 1.08 = $108.
- Remove VAT from a gross price: divide by (1 + rate). A £120 price including 20% VAT = 120 ÷ 1.20 = £100 before VAT.
To find the pre-tax price, you divide, you don't just subtract the percentage. Taking 20% off £120 gives £96, not £100. Always divide by 1 + the rate. Our sales tax calculator handles both directions.
Why it matters for sellers
If you sell across borders, this distinction is crucial. VAT systems often require registration once you pass a sales threshold, and you may need to charge the customer's local rate. US sales tax has its own web of state "nexus" rules. When in doubt, get proper tax advice, the penalties for getting it wrong can be steep.
Visitors to many VAT countries can claim a refund on goods they take home. Keep receipts and ask about tax-free shopping, it's money back on larger purchases.
Add or remove tax instantly. Switch modes to add tax to a net price or strip it out of a gross total at any rate.
Open the Sales Tax / VAT Calculator →The bottom line
Sales tax is added once at the register and varies locally; VAT is collected along the supply chain and hides inside the price. For everyday math, remember: multiply by (1 + rate) to add tax, divide by (1 + rate) to remove it, and you'll never be caught out at the checkout.
Frequently asked questions
What is the difference between sales tax and VAT?
Sales tax is charged once, at the point of final sale to the consumer, and is typically added on top of the shelf price. VAT (Value Added Tax) is collected in stages throughout the supply chain and is usually already included in the displayed price.
How do I calculate VAT on a price?
To add VAT, multiply the net price by 1 plus the rate (e.g. ×1.20 for 20%). To remove VAT from a gross price, divide by the same figure (e.g. ÷1.20).
Why does the US price go up at the register?
Because US sales tax is added at checkout rather than shown on the shelf, and the rate varies by state and even city, retailers display the pre-tax price.