UK VAT Calculator (Add or Remove VAT)
Add VAT to a net price or remove VAT from a gross price instantly. Works for any VAT, GST, or sales tax rate worldwide.
Adding VAT
To add VAT to a net (ex-VAT) price: Gross price = Net price × (1 + VAT rate as decimal). UK standard rate 20%: £100 net × 1.20 = £120 gross. Reduced rate 5%: £100 net × 1.05 = £105 gross. To calculate VAT amount only: VAT = Net price × VAT rate. For £100 at 20%: VAT = £100 × 0.20 = £20. To verify: £100 net + £20 VAT = £120 gross ✓. Businesses typically display prices ex-VAT (B2B) or inc-VAT (B2C retail). Always confirm which price basis applies before calculating the VAT element.
Removing VAT (De-vatting)
Net price = Gross price ÷ (1 + VAT rate). UK example: £120 gross ÷ 1.20 = £100 net. A common mistake: taking 20% off £120 gives £96, not £100. You must divide, not subtract.
UK VAT Rates
Standard rate (20%): most goods and services. Reduced rate (5%): domestic fuel, energy-saving materials, children's car seats, sanitary products. Zero rate (0%): food, books, children's clothing, public transport. Exempt: insurance, finance, education, health services.
When to Seek Financial Advice
Calculator results provide estimates based on stated inputs and should not replace professional financial advice for significant decisions. Free, regulated financial guidance is available through MoneyHelper (moneyhelper.org.uk, 0800 011 3797) for general money queries. Regulated independent financial advisers (IFAs) — find one at unbiased.co.uk — provide personalised advice on mortgages, pensions, investments, and insurance. Advice fees are typically £150-350 per hour or a percentage of assets
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