UK VAT Calculator 2026

Enter the net price and VAT rate to estimate the VAT amount and total gross price — handy for invoices, quotes, and pricing updates. Doing it here is instant and avoids manual calculation errors.

Enter the gross (VAT-inclusive) amount and the VAT rate to estimate the net price and the VAT portion, which is useful for reconciling receipts or supplier invoices that include VAT. Extracting VAT this way is quick, but keep the original invoice records for compliance.

VAT applies across the UK, but Northern Ireland can have specific VAT treatment for certain goods movements because of post-Brexit trade arrangements. In practice, most invoicing uses the same calculation method — the tool handles the maths, while the rules should be confirmed against HMRC guidance.

A common one is confusing net with gross pricing and quoting the wrong invoice total to clients. Another is assuming every product or service is taxable at the same rate. Automating the maths reduces calculation errors, but category rules still need checking.

HMRC sets the official rules for VAT rates, registration, and reporting, including what counts as a taxable supply. This tool follows standard VAT maths but isn't an HMRC product, so check HMRC guidance or speak with an accountant for compliance and edge cases.