Frequently Asked Questions
How do I calculate VAT?
To add VAT: multiply the price by (1 + VAT rate). For 20% VAT on £100: £100 × 1.20 = £120. To remove VAT: divide the total by (1 + VAT rate). £120 ÷ 1.20 = £100.
What is the VAT rate in the UK?
The standard UK VAT rate is 20%. Reduced rate is 5% for some goods. Zero rate (0%) applies to food, children's clothes, and books.
How do I calculate sales tax in the US?
Sales tax varies by state and sometimes city. Select your state in this calculator and it applies the correct rate automatically.
What is reverse VAT calculation?
Reverse VAT (or VAT extraction) finds the pre-tax price from a VAT-inclusive total. Useful when a price already includes VAT and you need to know the base price and tax separately.
How it works
- Select the mode: Add tax, Remove tax, or Calculate tax amount.
- Enter the amount you are calculating for.
- Choose the tax type (VAT, US State, or Custom).
- The pre-tax price, tax amount, and post-tax price update instantly.
Tips for best results
- •To remove 20% VAT, divide the total by 1.20. Our calculator does this for you.
- •US sales tax varies heavily by state. Use our built-in state selector for accurate base rates.
- •Use the bulk calculator at the bottom to find the total tax for an invoice with multiple items.