VAT & Sales Tax Calculator

Add or remove tax at any rate in one step. Enter an amount and your VAT or sales-tax rate, and this splits out the net, the tax and the gross — no mental maths.

Free vs paid — when to upgrade

What this free tool is great for: a quick, one-off job with no signup — it runs entirely in your browser, so nothing leaves your device and there's nothing to manage.

Its honest limit: it's a one-off calculation in your browser — it doesn't save your scenarios, update as your real numbers change, or connect to your live accounts, so you re-enter the figures every time and can't watch how they move.

Where Melio does more: Calculating tax is the easy part; tracking what you owe and getting paid is the work. A payments tool like Melio helps you send invoices, pay bills and keep it all straight.

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What VAT actually is

Value-added tax is a consumption tax — a percentage added to the price of most goods and services that the end customer ultimately pays. Unlike a simple sales tax bolted on once at the till, VAT is collected in stages along the supply chain, with each business charging it on what they sell and reclaiming it on what they buy. For anyone running a business in a VAT country, understanding how it flows through your prices, your invoices and your cash flow isn't optional — it's the difference between pricing correctly and accidentally eating the tax yourself. This calculator handles the arithmetic; the ideas below explain what you're actually calculating.

How VAT flows through the chain

The clever part of VAT is that businesses in the middle don't really bear it — the final consumer does. A manufacturer charges VAT to a wholesaler, who charges it to a retailer, who charges it to the shopper. At each step, the business collects VAT on its sales (output VAT) and reclaims the VAT it paid on its purchases (input VAT), remitting only the difference to the tax authority. So the tax is effectively levied on the "value added" at each stage, which is where the name comes from. The consumer at the end pays the full VAT with no one to reclaim it from, which is why VAT is described as a tax on final consumption rather than on business.

VAT-inclusive versus VAT-exclusive pricing

A price can be quoted two ways, and confusing them is a classic, costly error. A VAT-inclusive price already contains the tax — what the customer sees is what they pay. A VAT-exclusive price is the net figure to which VAT still has to be added. Consumer-facing businesses usually quote inclusive prices (shoppers want the final number), while business-to-business quotes are often exclusive (the buyer will reclaim the VAT anyway). Getting this wrong — quoting an exclusive price to a consumer and then adding VAT at checkout, or treating an inclusive price as if it were net — either shocks your customer or silently destroys your margin. Always be explicit about which one you mean.

Adding versus removing VAT — the maths

Adding VAT is the easy direction: multiply the net price by the rate and add it on. Removing VAT — extracting the tax from a gross, inclusive price — trips people up, because you can't simply subtract the percentage. If a price includes 20% VAT, the tax isn't 20% of the gross; it's 20% of the net, which is a smaller share of the total. To find the net you divide the gross by one plus the rate. This asymmetry is exactly why a calculator earns its keep: doing it by intuition, people routinely over- or under-state the tax portion when working backwards from an inclusive price.

Who has to register — and when

Not every business charges VAT. Most countries set a registration threshold — a level of turnover below which you needn't register, and above which you must. The threshold, the standard rate, and the reduced rates for things like food or books all vary significantly by country, so there's no single global number to memorise. Once registered, you must charge VAT on your sales, file periodic returns, and remit what you owe. Crossing the threshold without registering is a common and expensive mistake for growing businesses, because you can end up liable for VAT you never collected. Know your country's threshold and watch your turnover against it.

B2B, B2C and crossing borders

VAT gets genuinely complicated the moment you sell across borders or to other businesses. Domestic business-to-consumer sales are the simple case — charge your local rate. Cross-border and business-to-business sales bring in rules like the reverse charge, where the buyer rather than the seller accounts for the VAT, and place-of-supply rules that determine whose VAT applies. Digital services sold to consumers in other countries have their own regimes. These rules are where small businesses most often slip, because the intuition from domestic sales simply doesn't transfer. When you start selling internationally, this is the area worth getting proper advice on rather than guessing.

VAT is cash flow, not income

Here's the mental trap that catches new businesses: the VAT you collect is never your money. You're collecting it on behalf of the tax authority, and you'll have to hand it over at the next return. But because it sits in your bank account in the meantime, it's dangerously easy to treat it as available cash and spend it. Then the VAT bill arrives and the money's gone. Disciplined businesses mentally — or literally — ring-fence collected VAT so it's there when the return is due. Treating VAT as a temporary custodian's balance rather than revenue is one of the simplest habits that separates businesses that stay solvent from those that get a nasty quarterly shock.

The mistakes that cost real money

A handful of VAT errors recur. Applying the wrong rate — charging standard rate on something that qualifies for a reduced or zero rate, or vice versa. Forgetting to reclaim input VAT on your own purchases, effectively donating money to the tax authority. Failing to register on time. Poor record-keeping that makes the return a nightmare and invites penalties on an audit. And mixing up inclusive and exclusive figures in quotes and invoices. None of these are exotic; they're ordinary slips that compound. Clean, consistent records and a clear understanding of your rates prevent almost all of them — which is why good bookkeeping is really VAT insurance.

Calculating VAT vs paying the bills — where Melio does more

Working out the VAT on a price is exactly what this calculator is for, and it keeps your quotes and invoices honest. But VAT is one thread in the larger job of actually running your money — paying suppliers, tracking what you owe, keeping the collected tax where you can see it, and settling bills on time. That's where a bill-payment platform like Melio does more: it centralises paying and scheduling your business bills, so your outgoings — VAT remittances included — are organised and on time rather than scattered. Use this tool to get the VAT figure right; use a payments platform to make sure the money behind it is actually managed.

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