We ask first.

This website works without cookies. If you agree, we will also use cookies for measuring visits and our advertising. You can change your mind at any time from “Cookie settings” at the bottom of every page. Cookie policy

Guides: one question, one sourced answer.

Each guide answers one question businesses search for: a law, a platform, a shift in search. They are written by the team that does the work, with the official sources and the date the facts were last checked.

E-invoicing check

Six questions, and you see your own dates, the way of issuing that fits you and whether you need the declaration of start.

Run the check

How we write a guide

Like an expert's note: the answer first, then the facts behind it, and at the end the work we take on, with the service it belongs to.

  • One question per page

    The one a customer types into Google or asks an AI. The short answer comes first, not last.

  • Official sources

    Laws, decisions and the platforms' own documentation, linked. Whatever no source confirms is left out.

  • A checked date

    Every guide says when its facts were last checked, because rules and platforms change.