VAT Calculator

What this VAT calculator does

Value added tax (VAT) is a consumption tax charged on most goods and services in many countries. Prices are often quoted in one of two ways: a net price before VAT, or a gross price that already includes it. This calculator converts between the two and reports the VAT amount in the middle.

Use it to check an invoice, compare a business quote with a consumer price, or work backward from a total that already includes tax. You enter the rate that applies to the transaction.

How to use this calculator

1. Choose Add VAT if you have a net price, or Remove VAT if you have a gross price.
2. Enter the price for the mode you selected.
3. Enter the VAT rate as a percentage.
4. Click Calculate to see the net price, VAT amount, and gross price.

The default example uses a 20% rate and a net price of 1,200. The VAT is 240 and the gross price is 1,440.

VAT formulas

When adding VAT to a net price:

VAT = Net price × VAT rate ÷ 100
Gross price = Net price + VAT

When removing VAT from a gross price:

Net price = Gross price ÷ (1 + VAT rate ÷ 100)
VAT = Gross price − Net price

The reverse formula is not the same as subtracting the rate from the gross price. If a 20% VAT is included in a 1,440 total, subtracting 20% of 1,440 would leave 1,152, which is too low. The correct net price is 1,200, because the tax was calculated on 1,200, not on 1,440.

What the results mean

• Net price: the amount before VAT. This is the figure a business typically records as revenue.
• VAT rate: the percentage you entered.
• VAT amount: the tax included in or added to the price.
• Gross price: the amount the customer pays, including VAT.
• VAT breakdown: a full-width table restates the net price, VAT amount, and gross price with the calculation used for each row.

The same arithmetic works for any currency. The calculator does not assume dollars; the dollar sign is only a display convention.

Assumptions and limitations

The calculator uses a single rate for the whole transaction. Real VAT systems can have standard, reduced, and zero rates, and some goods or services are exempt. It does not apply country-specific rules, place-of-supply rules for cross-border sales, reverse-charge mechanisms, or rounding rules that a particular tax authority may require. It also does not handle multiple line items with different rates.

Enter the rate from the invoice or from the tax authority that applies to your transaction. The result is an arithmetic estimate, not a VAT return or tax advice.

Frequently asked questions

What is the difference between VAT and sales tax?

VAT is collected at multiple stages of production and is designed to be borne by the final consumer. Sales tax is usually collected once at the point of sale. The arithmetic for adding or removing either tax is similar, but the legal rules and reporting obligations are different.

Why do I divide by one plus the rate instead of subtracting the rate?

The gross price is the net price multiplied by one plus the rate. To reverse that multiplication, divide by the same factor. Subtracting the rate from the gross price assumes the tax was calculated on the gross amount, which overstates the tax.

Can I remove VAT from a total that includes several items?

Only if every item uses the same rate. If the invoice mixes rates, calculate each line separately and add the results. A single blended rate will not reproduce the invoice exactly.

Does this calculator include reduced or zero rates?

No. It applies the rate you enter. If a country charges 0% on some goods, enter 0% for those lines. If it charges a reduced rate, enter that rate for the affected items.

Source

References:

• GOV.UK — VAT rates
• European Commission — Value added tax (VAT)

Disclaimer

This calculator is for informational and educational purposes only. It is not tax advice or a VAT filing. VAT rates and rules vary by country and by transaction. Confirm the applicable rate and treatment with the relevant tax authority or a qualified adviser.