Back to Global Calculator
United Kingdom Reverse VAT Calculator.
Pre-loaded with the standard VAT rate of 20% and default currency symbol £.
$
+0.00%
5.0%
%
Pre-Tax Base Price
$ 0.00
Tax / VAT Extracted
$ 0.00
Calculated backwards in real-time
Understanding VAT in United Kingdom.
The standard Value Added Tax (VAT) rate in the United Kingdom is 20%. This calculator isolates the net value and VAT amount from any gross purchase total using standard international calculation guidelines.
How to Back Out VAT/GST in United Kingdom
To calculate the pre-tax net cost (base amount) from a gross total that includes a standard 20% VAT, apply the reverse VAT calculation formula:
Net Price = Gross Amount / (1 + (20 / 100))
Which simplifies to dividing the total by 1.20.
For example: If you paid a total of £120.00 inclusive of 20% VAT:
- Divide the gross amount:
£120.00 / 1.20 = £100.00(Net Price). - Subtract the net amount from total paid to extract the tax portion:
£120.00 - £100.00 = £20.00(Extracted tax).