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VAT CheckMachine: useful, gorgeous, free

What is it?

CheckMachine is a free (ad-supported) iPhone app that:

  • Instantly* validates all EU VAT numbers, so that you can safely issue zero-VAT invoices to eligible businesses.
  • Instantly calculates VAT and Net/Gross amounts for any amount for all VAT rates of all EU states.

Checked numbers can be added to History either automatically or manually, for reference and sharing with other apps or people. Auto-add is enabled through the app's Settings page.

* Depending on availability of the VIES service.

Whom is it for?

CheckMachine is a valuable free resource for business and pleasure.

If you're travelling in the European Union it's a handy and speedy VAT calculator that works in all EU states.

If you are involved with intra-EU invoicing, you will need it to validate that your counterpart is indeed entitled to VAT exemption.

How does it work?

As the user types a VAT number of any EU state, CheckMachine examines its apparent correctness ("well-formedness") on-the-fly. This step enhances usability and reduces traffic and fees.

EU VAT numbers (from any EU state) are checked using the official web service maintained by the European Commission's VAT Information Exchange System (VIES).

Attention: Not all correct VAT numbers are valid, therefore you must always check the validity of all VAT numbers before actually using them in invoices.


Kudos to Christopher Adam for the original app icon.