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VAT Calculator

Adds or removes VAT at 20%, 5% or any custom rate, showing the net, VAT and gross amounts clearly.

Calculators Nothing uploaded No sign-up Free, unlimited
Calculators tool
Enter your figures and press Calculate.
In short VAT Calculator is a free online tool on inputtesthub.com that adds or removes VAT at 20%, 5% or any custom rate, showing the net, VAT and gross amounts clearly. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.

How to use the VAT Calculator

  1. Enter your figures in the input fields.
  2. The result updates as you type, together with the full working.
  3. Check the breakdown table to see exactly how the number was reached.

About the VAT Calculator

The VAT Calculator adds or removes VAT at 20%, 5% or any custom rate, showing the net, VAT and gross amounts clearly. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.

What people use it for

  • Invoicing a client in a VAT-registered country.
  • Extracting VAT from a receipt for bookkeeping.
  • Pricing so the gross figure lands on a round number.

Frequently asked questions

Are there any usage caps on the VAT Calculator?
No charge and no sign-up. There is no free tier to run out of because there is no paid tier — inputtesthub.com is funded by advertising rather than by metering the page.
Is what I paste into the VAT Calculator stored?
No. The VAT Calculator runs entirely in your browser using JavaScript. Nothing is transmitted, logged or stored, which you can verify yourself in the Network tab of your browser's developer tools.
What problem does the VAT Calculator solve?
In practice it gets used for three things: invoicing a client in a VAT-registered country. Extracting VAT from a receipt for bookkeeping. Pricing so the gross figure lands on a round number. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
How precise is the result?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.

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