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VAT Guide Published: October 25, 2026 8 min read By Ali Hassan

VAT Calculator Guide: How to Add or Remove VAT Correctly

Value Added Tax (VAT) is the tax added to most goods and services — but a price tag rarely tells you how much of it is tax and how much is the product itself. This guide shows you how to add VAT to a net price, how to remove VAT from a gross price, and how to avoid the one mistake almost everyone makes when working VAT backwards.

Try it now:Free VAT Calculator

What a VAT calculator actually works out

A VAT calculator splits a price into its two parts: the net price (the price before tax) and the VAT amount (the tax itself). Added together, they make the gross price — the total a customer actually pays.

That split matters in both directions. A business quoting a customer needs the gross price, while an accountant recording an expense needs the net price and the VAT amount separately. The LoveEasyTool VAT calculator does both instantly, in your browser, so your figures never leave your device.

How to add VAT to a price

To add VAT, multiply the net price by one plus the VAT rate as a decimal:

Gross price = net price × (1 + VAT rate ÷ 100)

For example, a net price of 100 at the UK standard rate of 20% gives 100 × 1.20 = 120. The VAT amount is 20, and the customer pays 120.

To use the calculator: VAT Calculator — enter the net price, pick the rate, and read off the VAT amount and the gross total.

How to remove VAT from a price

Removing VAT is where most people go wrong. You cannot simply subtract the VAT percentage from the gross price — 20% off 120 is 96, not 100. Instead, divide the gross price by one plus the VAT rate as a decimal:

Net price = gross price ÷ (1 + VAT rate ÷ 100)

For example, a gross price of 120 at 20% VAT gives 120 ÷ 1.20 = 100 net, so the VAT portion is 20. The same rule works at any rate: at 5% divide by 1.05, at 19% divide by 1.19, and at 23% divide by 1.23.

VAT rates by country: why one rate does not fit all

There is no single worldwide VAT rate. Standard rates differ sharply from country to country, and many countries also have reduced or zero rates for food, books, medicines and other essentials. Using the wrong country's rate is one of the easiest ways to misprice a quote or an invoice.

Always check which rate applies to your specific product or service — the standard rate is the starting point, not always the answer.

Net, gross and VAT-inclusive: saying what you mean

Confusion usually comes from unclear wording, not from the maths. A price quoted "excluding VAT" (net) and a price quoted "including VAT" (gross) can differ by a fifth or more, so always state which one you mean — on quotes, invoices and receipts alike.

For business-to-consumer prices, the gross figure is what the customer pays, so it should be the prominent number. For business-to-business invoicing, show the net price, the VAT rate, the VAT amount and the gross total as separate lines, so the buyer's accountant can reclaim or record the VAT correctly.

Five common VAT calculation mistakes

  • Subtracting the percentage to remove VAT — removing 20% VAT means dividing by 1.20, not taking 20% off the gross price.
  • Using the wrong country's rate — a UK quote priced at a German or UAE rate will be wrong by several percent.
  • Applying the standard rate to everything — food, books, medicines and other items often qualify for a reduced or zero rate.
  • Mixing up net and gross on invoices — if the buyer cannot see the VAT amount separately, their records will be wrong too.
  • Rounding too early — round only the final VAT amount and total, not each intermediate step, or small errors will creep into your totals.

Frequently asked questions

How do I add VAT to a price?

Multiply the net price by one plus the VAT rate as a decimal. For example, at 20% VAT, a net price of 100 gives 100 × 1.20 = 120, so the VAT amount is 20 and the gross price is 120.

How do I remove VAT from a gross price?

Divide the gross price by one plus the VAT rate as a decimal. For example, at 20% VAT, a gross price of 120 gives 120 ÷ 1.20 = 100 net, so the VAT portion is 20. Do not simply subtract 20% from the gross price, as that gives 96, not 100.

What is the standard VAT rate in the UK?

The standard VAT rate in the United Kingdom is 20%. A 5% reduced rate applies to some items such as domestic fuel and power, and a 0% zero rate applies to most food, children’s clothing and books.

Why can I not just subtract 20% to remove 20% VAT?

Because the VAT percentage is calculated on the net price, not on the gross price. Twenty percent of the net figure of 100 is 20, but 20% of the gross figure of 120 is 24, so subtracting 20% from the gross price removes too much. Dividing by 1.20 is the correct reverse calculation.

Do all countries use the same VAT rate?

No. Standard VAT rates differ by country — for example, 20% in the UK and France, 19% in Germany, 23% in Ireland, 5% in the UAE and 15% in Saudi Arabia — and many countries also have reduced or zero rates for specific goods and services. Always use the rate for the country and product in question.

Add or remove VAT in seconds

Enter a net or gross price, pick the VAT rate, and see the VAT amount and the total instantly — free, with nothing uploaded anywhere.

Open the VAT Calculator