VAT Calculator
Add VAT to a net amount or recover the net amount and VAT from an inclusive price using your entered rate.
Last updated: November 4, 2026
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Quick summary: Add VAT to a net amount or recover the net amount and VAT from an inclusive price using your entered rate.
Read the complete guide
Updated reference sections in this guide are in English.
Start with the right kind of amount
Choose whether the amount you already know is before VAT or includes VAT. Enter the rate applicable to your example or invoice; this tool does not choose a rate from your location. The 10% default is an arithmetic illustration, not a statement of a country’s current rate. All amounts must refer to the same currency and tax treatment.
Adding and removing use different arithmetic
Add VAT: gross = net × (1 + r)
Remove VAT: net = gross ÷ (1 + r)
VAT amount = gross − net
When VAT is already included, its percentage was applied to the smaller net amount. Multiplying the inclusive price by that same percentage would use the wrong reference amount. The result separates the net price, the tax component and the gross price so that you can check which figure you need.
Two checks using the same transaction
Start with a net amount of 100
At an entered rate of 10%, VAT is 100 × 0.10 = 10, and the inclusive amount is 110.
Start with the inclusive amount of 110
At 10%, recover the net amount as 110 ÷ 1.10 = 100. The VAT is 10, not 11. Entering 110 × 10% would wrongly calculate a percentage of the gross amount.
At a zero rate, net and gross are equal and the tax amount is zero. The same formulas work for an entered 5%, 15% or another supported nonnegative rate without assuming where it applies.
Check this scenario in the calculator:
- Calculation
- Add VAT to a net amount
- Amount excluding VAT
- 100
- VAT rate (%)
- 10
- Currency (display only)
- USD — US dollar
Invoice limits and rounding
This calculator handles one amount at one entered rate. It does not determine registration, exemptions, deductibility, place-of-supply rules, reverse charges or tax owed on a return. Separate mixed-rate invoice lines before applying a single-rate calculation. Intermediate values retain browser precision; displayed money is rounded to two decimals. A supplier that rounds every line separately can have a small difference from a calculation made once on the invoice total.
Reference and questions
GOV.UK: charging VAT and calculating inclusive and exclusive prices explains the distinction between those amounts. Its jurisdiction-specific rules are not automatically applied here.
Does the currency selector choose the VAT rate?
No. It changes only the displayed currency label. You must enter the rate yourself.
Can I remove VAT by subtracting the rate from the gross price?
Use division by 1 plus the decimal rate. Subtracting the same percentage from the gross amount uses a different base.
Can I enter an entire invoice with several rates?
Not as one calculation. Separate the amounts belonging to each rate and check the invoice’s rounding convention.