VAT Calculator

Calculating VAT could not be simpler! The VAT Calculator can be used as an aid for compiling sales invoices, as a tool for checking the accuracy of purchase invoices, or for identifying the VAT element of a VAT inclusive value.

To use the VAT Calculator enter the VAT rate, an amount then select either the Gross, Net or VAT value where indicated. The VAT Calculator will then work out the missing values.

If you receive an invoice and the VAT value differs from that suggested by the VAT Calculator, the invoice is not necessarily wrong. There are a number of legitimate reasons why there may be a difference:
  1. The net or gross figure entered into the calculator may include exempt or zero-rated items.
  2. When the invoice was produced a different method of rounding may have been used when calculating VAT. In this case the VAT value should not differ by more than £0.01 unless the VAT is calculated on an item by item basis in which case the difference should be no more than £0.01 multiplied by the number of items.

If you have identified a discrepancy in an invoice and none of the above reasons apply please contact us and we will review it for you free of charge.

Historic VAT Rates

From To Rate
01 April 1973 28 July 1974 10%
29 July 1974 17 June 1979 8%
18 June 1979 31 March 1991 15%
01 April 1991 30 November 2008 17.5%
01 December 2008 31 December 2009 15%
01 January 2010 03 January 2011 17.5%
04 January 2011 20%