🧾VAT Calculator

Our VAT calculator handles all three directions of VAT arithmetic: adding VAT to a net price, removing VAT from a gross price (reverse VAT), or finding both prices from a known VAT amount. A quick VAT tax calculator that only goes one direction leaves half the use cases unserved. Whether you are a business quoting prices, a consumer checking receipts, or an accountant reconciling accounts, this tool provides the exact net, VAT, and gross amounts in either direction.

The Critical Difference Between Adding and Removing VAT

The most common VAT calculation error is removing VAT incorrectly. Many people assume that to remove 20% VAT from a gross price, you simply take 20% of the gross and subtract it. This is wrong. If a product costs £120 gross including 20% VAT, the VAT is not 20% of £120 (£24) — the VAT is £20 and the net price is £100.

The correct reverse VAT formula is: Net = Gross ÷ (1 + VAT Rate). At 20%: £120 ÷ 1.20 = £100. The reason is that VAT is calculated on the net price, not the gross. When you see a price of £120 including 20% VAT, that means the net price is the base and 20% of that net is added on top. The VAT as a percentage of the gross price is always lower than the VAT rate — at 20% VAT, the tax represents 16.67% of the gross price (£20 out of £120).

Understanding this distinction matters practically: overestimating VAT when reversing means understating net prices, which affects profit margin calculations, inter-company invoicing, and VAT reclaim filings. Use this reverse VAT calculator any time you need to extract the VAT component from a VAT-inclusive price.

VAT Rates Around the World

VAT (called GST in some countries) is the most widespread consumption tax globally. The UK standard VAT rate is 20%, with a reduced rate of 5% on certain goods (home energy, children's car seats) and 0% on essentials (food, children's clothing, books). The European Union requires member states to apply a minimum standard rate of 15%, with most EU countries setting rates between 19% and 27%. Hungary has the world's highest standard VAT rate at 27%; Switzerland has one of the lowest standard rates among developed economies at 8.1%.

Common standard VAT rates: UK 20%, Germany 19%, France 20%, Italy 22%, Spain 21%, Australia (GST) 10%, Canada (GST) 5% plus provincial rates, Japan (Consumption Tax) 10%. The US is notable for not having a federal VAT — it uses state and local sales taxes instead, which vary from 0% to over 10% depending on location and product category. This calculator works with any rate from 0% to 100%, making it applicable to all of these systems.

VAT-Registered Businesses: Input Tax, Output Tax, and Net VAT

For VAT-registered businesses, the calculation flows work in both directions simultaneously. On sales (output VAT), the business adds VAT to the net price and collects it from customers on behalf of the government. On purchases (input VAT), the business pays VAT to its suppliers and then reclaims it from the tax authority. The net VAT payable to the government is output VAT minus input VAT.

For example, a UK retailer buys goods for £1,000 net + £200 VAT (20%) and sells them for £1,500 net + £300 VAT. The VAT payable in the period is £300 (output) − £200 (input) = £100. This calculation repeats across every transaction in the accounting period and is submitted via VAT returns (quarterly in the UK under Making Tax Digital). The "net price" and "gross price" distinction appears on every VAT invoice and is the starting point for every VAT return calculation.

Zero-Rated vs VAT-Exempt Goods: An Important Distinction

A zero-rated supply and a VAT-exempt supply are both taxed at an effective rate of zero, but they are treated differently in VAT accounting. Zero-rated goods (0% VAT) allow the selling business to reclaim input VAT on expenses related to producing those goods. VAT-exempt goods remove the goods entirely from the VAT system — the selling business cannot charge VAT but also cannot reclaim input VAT on related costs.

This distinction matters significantly for businesses dealing in mixed supplies. A UK private school providing both exempt tuition and zero-rated textbooks must apportion its input VAT between the two types of supply, reclaiming only the portion attributable to zero-rated or taxable activities. Businesses that primarily sell exempt supplies (financial services, health services, residential property rental) may find themselves unable to recover much input VAT, making VAT an irrecoverable cost rather than a pass-through tax. The effective VAT rate field in this calculator reflects this nuance — a business selling exempt supplies effectively bears the VAT cost of its inputs.