Reverse charge, or do you charge VAT?

You pick the supply type, your VAT country, your customer's country and whether their VAT number was verified. It returns eight answers: who accounts for the VAT, the VAT to charge, the exact wording for the invoice, the legal basis, the EC Sales List answer, the art. 222 invoice deadline, the money at risk, and the time left to file.

Bookkeepers, freelancers and agency finance staff raising invoices between UK and EU countries. It fits anyone who issues a handful of cross-border invoices a month and has no in-house VAT specialist - the case where the reverse charge is decided from memory, and the mistake surfaces at the next return rather than at the moment of billing.

A chatbot answers from the rules it was trained on, so it misses the rates that moved in 2026 and it frequently tells a UK supplier to file an EC Sales List, which Great Britain stopped doing after 31 December 2020. It also cannot know whether you verified that VAT number, which is the fact the whole answer turns on.

Every check is free, with no key, no limit and nothing watermarked: the decision, the wording, the legal basis, the EC Sales List answer, the deadline and the exposure figure. The key adds two different things - downloading a check as a .csv for the client file, and alarms 30, 14 and 1 day before the dates you enter.

The UK contract-market median for consulting work is about GBP 550 a day in 2026, so a single cross-border VAT question put to an adviser rarely comes back under three figures. The other cost is the error itself: HMRC charges up to 30% of the tax for a careless mistake, on top of the tax.