Ask anything about UK e-invoicing
Clear, short answers on the April 2029 mandate, Peppol and VAT invoices, drawn from 77+ researched einvoices.uk articles. Every answer links to its source.
A real answer
It depends on VAT registration, not on being a sole trader. If you are VAT-registered and invoice businesses or the public sector, you will need e-invoices from April 2029. Unregistered sole traders are not obliged, and no size-based exemption has been announced.
How it works
You ask in plain English
No jargon needed. Ask about your situation, a Peppol error code or a deadline.
It reads our articles
The assistant searches einvoices.uk, reads the most relevant guide in full and only then answers.
You get a short answer with the source
A direct answer in a few sentences, plus a link to the article so you can check the detail.
What it is good at
The 2029 mandate
Who is in scope, what is confirmed, what is still open and what happens at Budget 2026.
Peppol in the UK
Peppol IDs, Access Points, the four-corner model, and edge cases like the Isle of Man and Northern Ireland.
Validation errors
What BR-CO-15, BR-CO-09 or R004 mean and how to fix the invoice that triggered them.
VAT invoice rules
What HMRC requires on a VAT invoice, reverse charge wording, credit notes, pro-formas and deposits.
Your sector
Construction, charities, NHS and council suppliers, landlords, law firms, hauliers and more.
Pointing you to the right tool
It suggests our free tools when they fit: scope checker, validator, Peppol lookup and more.
Good to know
Is the einvoices.uk AI assistant free?
Yes. There is no account and no cost. It has a fair-use limit per visitor, and it may be paused if demand runs high.
Where do the answers come from?
First from einvoices.uk's own articles on the UK e-invoicing mandate, Peppol and VAT invoicing, which it searches and reads before answering. For very recent news it can search the web, and it says when an answer comes from outside our site.
Can I rely on the answers for tax decisions?
Use them as a starting point. AI answers can be wrong and are not tax advice. Every answer links to the article it is based on so you can check it, and for decisions about your own business you should check HMRC guidance or ask an accountant.
Are my conversations saved?
No. We do not store conversations and there are no accounts. Your browser keeps the current chat until you close the tab. Questions are sent to Anthropic, the maker of Claude, to generate the answer. Please do not enter personal or confidential information.
Which AI model does it use?
It runs on Anthropic's Claude, with tools to search and read our articles and, when needed, the web.
Try it now
Free, no account, and every answer links to its source.