Free VAT & Sales Tax Calculator
Add or remove VAT, sales tax, ICMS, and GST instantly. Built-in presets for the UK, UAE, US, and Brazil — or set a custom rate for any country.
UK VAT applies to most goods and services. The standard rate is 20%. Some items qualify for reduced or zero rates.
Enter an amount to see the breakdown.
Region notes
VAT & Sales Tax for Every Business
One tool, multiple jurisdictions. Calculate the right tax for your invoices, quotes, and receipts in seconds.
Multi-Region Presets
Built-in rates for UK VAT, UAE VAT, US state sales tax, and Brazilian ICMS/ISS — switch jurisdictions with a single click and the right preset rates appear instantly.
Add or Reverse
Add tax onto a net price to get the gross, or strip tax out of a gross price to find the net. Both calculation modes use the correct formulas and round consistently.
Custom Rates
Need to calculate EU VAT, Australian GST, Canadian HST, or a niche local rate? Pick “Custom” and enter any percentage — works for every country.
Instant Results
No submit button. Results update live as you change region, rate, mode, or amount. Perfect for live pricing conversations with clients.
100% Private
All calculations run in your browser. Nothing you enter is sent to a server, stored, or logged. Safe to use for sensitive quotes or invoices.
Works Anywhere
Fully mobile-optimised — use it on your phone in a meeting, on a desktop while preparing invoices, or in the field while quoting clients on-site.
Who Uses This Calculator?
A daily tool for anyone handling prices that involve VAT, sales tax, or ICMS.
Freelancers
Quote clients with confidence — calculate the VAT-inclusive total in seconds before sending an estimate or invoice.
E-commerce Sellers
Set the right listing price and back out the net amount for accounting. Especially useful for marketplaces that show VAT-inclusive prices.
Small Businesses
Quickly produce VAT-inclusive prices for invoices, or strip tax out of a competitor's gross price to compare net.
Accountants
Reverse-calculate VAT components on receipts, reconcile gross amounts against net entries, and verify supplier invoices.
Frequently Asked Questions
What is the difference between “add VAT” and “remove VAT”?
“Add VAT” takes a net price (the amount before tax) and calculates the gross price (the amount the customer pays). “Remove VAT” does the opposite — it takes a VAT-inclusive (gross) price and works back to the net. Use add when pricing for customers, and remove when reconciling receipts or splitting tax for accounting.
How do I calculate UK VAT at 20%?
To add 20% VAT: multiply the net price by 1.20. So £100 net becomes £120 gross. To remove 20% VAT from a gross price: divide by 1.20. So £120 gross becomes £100 net. The VAT element is the difference — £20. This calculator does both directions automatically.
What is the VAT rate in the UAE?
The UAE introduced a flat 5% VAT on January 1, 2018. It applies to most goods and services. Some categories — including healthcare, education, exports, and certain residential property — are zero-rated, meaning VAT is technically charged at 0% and businesses can still reclaim input VAT.
Why do US sales tax rates vary so much?
The US has no federal sales tax. Each state sets its own rate, and counties and cities can add additional local tax on top. The result is thousands of distinct rates depending on the exact street address of the sale. The state averages in this calculator are useful for quick estimates — for exact rates, check the official state Department of Revenue.
What is ICMS and how is it different from VAT?
ICMS (Imposto sobre Circulação de Mercadorias e Serviços) is Brazil's state-level value added tax on goods and inter-state transport and communication services. Each state sets its own rate — São Paulo and Minas Gerais charge 18%, Rio de Janeiro 20%, with different reduced rates for inter-state trade (7% or 12%). Services within a municipality use ISS instead, typically 2–5%.
Can I use this for EU VAT or Australian GST?
Yes — switch to “Custom” and enter your local rate. EU VAT rates range from 17% (Luxembourg) to 27% (Hungary). Australian GST is 10%, Canadian GST is 5% (plus PST or HST depending on province), Singaporean GST is 9%. The math is the same — only the rate changes.
Are these rates always up to date?
We try to keep the preset rates current, but tax law changes — especially US state and Brazilian state rates. For official invoices, audit work, or any legally binding calculation, always verify with your local tax authority or a qualified accountant. This calculator is for quick estimates and planning, not for filed tax returns.
Does this work offline?
Yes. All calculations happen in your browser using simple arithmetic — once the page loads, you can disconnect entirely and continue using the tool. Nothing you type is sent anywhere or saved.
Understanding VAT, Sales Tax, and ICMS
VAT (Value Added Tax) and sales tax both add a percentage to the price of goods and services, but the mechanics behind them are different. Understanding which model applies in your country — and how to calculate it in both directions — is essential for accurate pricing, invoicing, and tax compliance.
How VAT Works
VAT is collected at every stage of the supply chain. A manufacturer pays VAT on raw materials, charges VAT to the wholesaler, who charges VAT to the retailer, who charges VAT to the consumer. At each stage, the business reclaims the VAT it paid on inputs and remits the difference to the tax authority. The consumer ends up paying the full VAT, but the tax is collected incrementally rather than all at the final point of sale.
This is the model used by most countries — the UK, EU member states, the UAE, Australia (as GST), Canada (as GST/HST), Singapore, and many others. The rate varies but the mechanism is the same.
How US Sales Tax Works
US sales tax is collected only at the final point of sale to the consumer. Wholesalers and manufacturers buying for resale typically use a resale certificate to avoid paying sales tax on intermediate transactions. This means there is one tax point, not many — which simplifies the math but creates a strong incentive for cross-state shopping when rates differ.
Since the 2018 Supreme Court decision in South Dakota v. Wayfair, e-commerce sellers must collect sales tax in any state where they exceed an economic nexus threshold, even without physical presence. This has made multi-state sales tax compliance one of the most complex parts of running a US-based online business.
VAT in the UK Post-Brexit
The UK left the EU VAT system on January 1, 2021. UK VAT is now an entirely domestic regime, still at 20% standard. Sales between the UK and EU now treat each side as “exports” with customs declarations and potentially import VAT — a significant administrative shift for businesses that previously treated the EU as a single market.
UAE VAT — A Modern Implementation
The UAE introduced VAT in 2018 at 5%, one of the lowest rates in the world. The UAE's Federal Tax Authority operates a fully digital VAT system, with quarterly returns filed online. Businesses with annual taxable supplies above AED 375,000 must register; those above AED 187,500 may register voluntarily. The low rate and clean implementation have made it one of the simpler VAT regimes to operate within.
Brazil's Complex Tax Layers
Brazil's indirect tax system is notoriously layered. ICMS is a state-level VAT on goods. ISS is a municipal tax on services. PIS and COFINS are federal contributions on revenue. IPI is a federal excise on manufactured goods. The rate that actually applies depends on the type of product (defined by NCM code), the seller's state, the buyer's state, and the type of transaction (B2B, B2C, inter-state, intra-state).
For day-to-day estimates, the ICMS rate of the seller's state is the most relevant figure — and that's what this calculator helps you compute. For formal invoicing (Nota Fiscal), use accounting software or consult a Brazilian tax professional.
Why Reverse Calculation Matters
Most consumer-facing prices in VAT countries are VAT-inclusive — the price tag in a UK shop already includes 20%. But for accounting, you need the net portion. The reverse calculation (gross to net) is what lets you separate the actual revenue from the VAT you collect on behalf of HMRC. Get this wrong, and your accounts will show inflated revenue and you'll under-record your VAT liability — a costly error at audit.
The formula for removing 20% VAT is to divide by 1.20, not to subtract 20%. £120 ÷ 1.20 = £100 net (and £20 VAT). £120 − 20% = £96 — wrong. This calculator handles the math automatically so you can never make this common mistake.