When this tool helps
- Estimate a gross price from a net quote
- Separate VAT from a tax-inclusive receipt
- Check the arithmetic on an invoice draft
MONEY
VAT Calculator
Add VAT to a net price and see the tax amount.
Runs locallyNothing is uploaded
PRACTICAL GUIDE
How to use VAT Calculator
Last reviewed
Add VAT to a net amount or remove VAT from a tax-inclusive total using a rate you provide. The calculator does not infer a jurisdiction, product category or applicable rate.
How to use it
- Choose whether the entered amount excludes or includes VAT
- Enter the amount and stated VAT rate
- Calculate the net, VAT and gross components
- Verify the rate and treatment with the relevant tax authority
Adding 20% VAT
- Input
- Net amount 100 at 20%
- Result
- VAT 20; gross amount 120
Removing 20% VAT from 120 divides by 1.20; it does not subtract 20% of 120.
Formula: add: gross = net x (1 + rate / 100); remove: net = gross / (1 + rate / 100)
Limits and assumptions
- Rates and exemptions vary by jurisdiction and transaction
- Rounding rules can differ by invoice and authority
- The result is an arithmetic aid, not tax advice
Frequently asked questions
How much is VAT?
VAT is the difference between the calculated gross and net amounts at the rate you enter.
Why is removing 20% not the same as subtracting 20%?
A gross price already contains VAT as a fraction of the net price, so the net amount is found by division.
Does FroggoTools choose the correct VAT rate?
No. You must enter and verify the rate that applies to your transaction.
Are the invoice values uploaded or stored?
No. Net, VAT and gross values are calculated in your browser and are not uploaded by the tool.