Contact Reverse Tax Tool – Report an Error or Suggest a Rate

We read every message and aim to reply within a few working days. Useful things to tell us about:

A wrong result or a changed tax rate – please include the amount, the rate and what you expected. Corrections are fixed as soon as they are checked against the official source.
A country, province or feature you need – for example another country's VAT or GST, or a different way to export results.
Something that doesn't work on your device or browser.

We can't give tax advice on individual situations. For questions about how tax applies to your business, contact HMRC, the Canada Revenue Agency or an accountant.