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UK VAT calculator
Free UK VAT calculator: add or remove VAT at 20%, 5%, 0% or a custom rate, with net, VAT and gross amounts, plus the current VAT registration threshold.
UK VAT rates
- Standard rate (20%): Most goods and services
- Reduced rate (5%): For example home energy and children's car seats
- Zero rate (0%): For example most food and children's clothes
Rates checked on gov.uk in September 2026. Some goods and services are exempt or have special rules; see VAT rates on different goods and services.
The VAT registration threshold
- You must register for VAT if your taxable turnover for the last 12 months goes over £90,000.
- You must also register if you expect your taxable turnover to go over £90,000 in the next 30 days alone.
- After going over the threshold, you have to register within 30 days of the end of that month.
- You can ask HMRC to cancel your registration if your taxable turnover falls below £88,000.
Thresholds checked on GOV.UK in November 2026: Register for VAT and Cancel your VAT registration.
How to use it
- Type the amount.
- Choose the VAT rate, or choose Custom rate and type your own.
- Choose whether the amount is before VAT (add VAT) or already includes VAT (remove VAT), then press Calculate.
See how quotes and invoices works in CompanyFlowHQ
Frequently asked questions
How do I add VAT to a price?
Multiply the price before VAT by 1.2 for the 20% standard rate. For example, £100 plus 20% VAT is £120.
How do I take VAT off a price?
Divide the price including VAT by 1.2 for 20%, or by 1.05 for 5%. For example, £120 ÷ 1.2 = £100, so the VAT is £20.
When do I have to register for VAT?
When your taxable turnover for the last 12 months goes over £90,000, or if you expect it to go over £90,000 in the next 30 days alone. You can also register voluntarily below that.
How is the VAT rounded?
This calculator works in pence and rounds the VAT to the nearest penny, with half a penny rounded up.