AI for invoices

AI can help you a lot with invoices, but it shouldn't be the one issuing them. It's useful for reading the invoices you receive and pulling out their data, preparing drafts, spotting errors or categorising expenses; the legally valid invoice should come out of your invoicing software. In other words: AI is a good admin assistant, not the one who signs the papers.

The most rewarding use is with invoices you receive: the AI reads the PDF or the photo and extracts the supplier, date, amounts and taxes, which saves a lot of typing. What usually confuses people is that AI can get a number or a tax ID wrong and sound just as convinced, so human review can't be dropped. In Spain, what's more, invoicing software will have to comply with Verifactu, the tax authority's system, from 1 January 2027 for companies and from 1 July 2027 for everyone else (checked in September 2026). An AI chat doesn't meet that on its own.

How I use AI with invoices and quotes in a small business, what data I give it and what I don't, and which review step can't be skipped I explain in "Invoices and quotes with the help of artificial intelligence". If you want to start today, try it with invoices you receive: that's where you risk least and where you notice the time saved soonest.