VAT extraction is often misunderstood because subtracting the VAT percentage from a gross price does not recover the original net amount. VAT Calculator applies the correct add-or-extract relationship using the rate you provide.
That solves the arithmetic, not the tax law. VAT rates, reduced rates, exemptions, registration rules, cross-border treatment, and invoicing requirements vary by country and transaction. For compliance work, confirm the applicable rate and treatment from the current tax authority guidance rather than assuming a generic calculator determines them.
How to use this tool
How does the VAT Calculator work?
How to use VAT Calculator
- Enter the amount.
- Enter or confirm the VAT rate that applies to the transaction.
- Choose inclusive or exclusive calculation mode when that option is provided.
- Calculate the VAT amount and final total.
- Verify the current rate, exemptions, and tax treatment for the relevant jurisdiction before using the result for filing, invoicing, or compliance.
Net, VAT and gross amounts
VAT is calculated from the net taxable base. Adding VAT multiplies the net amount by 1 + rate/100. Extracting VAT from a gross total requires division by the same factor before finding the tax component. This is why subtracting the VAT percentage directly from the gross price gives the wrong net amount.
Use the correct jurisdiction-specific rate
The calculation is only as accurate as the rate and treatment entered. Standard rates, reduced rates, exemptions and cross-border rules vary by country, product or service, and date. The tool performs the arithmetic; it does not determine legal VAT treatment.
Examples
Add 20% VAT
VAT = £20; gross price = £120.
Extract 20% VAT
Net = £120 ÷ 1.20 = £100; VAT component = £20.
Reduced rate
VAT = 4; gross = 84.
Gross extraction pitfall
Taking 20% of 120 gives 24, which is not the embedded VAT. The correct extraction is 120 − 120/1.20 = 20.
Common use cases
- Invoice calculations
- Retail prices
- B2B quotes
- Tax-inclusive totals
- Tax-exclusive totals
Frequently asked questions
How do I add VAT to a net price?
Multiply the net amount by the VAT rate to calculate tax and add it to the net amount, or multiply the net amount by 1 + rate/100.
How do I extract VAT from a VAT-inclusive price?
Divide the gross amount by 1 + rate/100 to find the net base, then subtract the net from the gross amount to obtain the VAT component.
Why is VAT extraction different from subtracting the VAT percentage?
The VAT percentage is applied to the net base. Once tax is included, the gross amount is a larger base, so the correct extraction formula uses division.
Which VAT rate should I enter?
Use the current rate that applies to the transaction's country, date, product or service category, and tax status. A generic calculator cannot determine legal applicability by itself.
Can this replace official VAT advice or filing software?
No. It performs percentage arithmetic. Cross-border rules, exemptions, registration, invoice requirements, and filing obligations require current jurisdiction-specific guidance.