VAT calculator

Our VAT calculator can be used to determine the Value Added Tax (VAT) on a given amount. Helping individuals and businesses calculate the amount of VAT that should be added to or subtracted from a price. 

Page written by AI. Reviewed internally on May 14, 2024.

Read this article to me

How to calculate VAT

The formulas to calculate VAT amount or total price: VAT Amount = Original Price × VAT Rate Total Price = Original Price + VAT Amount

To calculate Value Added Tax (VAT), you’ll need to follow these steps:

1. Determine the VAT Rate: First, find out the applicable VAT rate for the goods or services in question. In the UK, there are different rates for various items.

2. Calculate the VAT Amount: To calculate the VAT amount, multiply the original price by the VAT rate (expressed as a decimal). For example, if the original price is £100 and the VAT rate is 20%, the calculation would be:

VAT Amount = Original Price × VAT Rate
= £100 × 0.20
= £20

3. Total Price Including VAT: To find the total price including VAT, add the VAT amount to the original price:

Total Price = Original Price + VAT Amount
= £100 + £20
= £120

4. Total Price Excluding VAT: Conversely, if you have the total price including VAT and you want to find out the original price before VAT, you can use this formula:

Original Price = Total Price / (1 + VAT Rate)

Using the previous example:

Original Price = £120 / (1 + 0.20)
= £120 / 1.20
= £100

These calculations are essential for businesses and individuals to accurately handle VAT in transactions. Remember to always use the correct VAT rate for the specific goods or services you’re dealing with.


This calculator is intended for illustration purposes only and exact payment terms should be agreed with a lender before taking out a loan.

Your results

Gross price


Tax amount


Get a quote
Ready to grow your business?

Clever finance tips and the latest news

delivered to your inbox, every week

Join the 70,000+ businesses just like yours getting the Swoop newsletter.

Free. No spam. Opt out whenever you like.

We work with world class partners to help us support businesses with finance

Looks like you're in . Go to our site to find relevant products for your country. Go to Swoop No, stay on this page