VAT & GST Calculator

Add or remove tax and see the price before tax, tax amount and total

United Kingdom and Scotland: The standard UK VAT rate is 20% for most goods and services. A reduced rate of 5% applies to some items, while some supplies are zero-rated or exempt. Scotland follows the same UK VAT system.

Australia: Australia calls the tax GST and uses a standard rate of 10% on most goods, services and other items. This calculator starts at 20% for the UK. Change the rate to 10% for Australian GST, or enter the rate shown on your receipt.

UK example: If the price before VAT is £1,000,000, VAT at 20% is £200,000 and the total is £1,200,000.

1Add VAT or GST to a price

Start with the price before tax to calculate the tax amount and total price.

VAT or GST rate

Price before tax

£ / $

Price before tax	0
Tax amount	0
Total including tax	0

2Remove VAT or GST from a total

Start with the tax-inclusive total to find the price before tax and the tax included.

VAT or GST rate

Total including tax

£ / $

Total including tax	0
Tax included	0
Price before tax	0

How is VAT or GST calculated?

Tax amount = Price before tax × Tax rate ÷ 100

Total including tax = Price before tax + Tax amount

Price before tax = Total including tax ÷ (1 + Tax rate ÷ 100)

Note: Tax rates and exemptions depend on the country, location, product and service. Check the rate on your receipt or invoice before using the result for accounting or tax reporting.

Sources: GOV.UK – VAT rates and Australian Taxation Office – GST