How this guidance gets written.
This site publishes tax rates, invoice requirements and e-invoicing deadlines for 61 countries. Getting those wrong costs someone real money, so here is exactly how they are produced and what to do when one is wrong. Last updated 23 July 2026.
Who writes it
All of it: Thomas van der Bruggen, who also built the product. There is no content team, no freelance marketplace and no AI-generated filler published without review. Invoice Forever is operated by Thomas van der Bruggen Holding B.V. (KvK 75464136), so the name on this page belongs to someone you can actually look up.
The relevant experience is first-hand rather than academic: running a registered company in the Netherlands, issuing invoices across borders, dealing with VAT and reverse charge, and chasing payments that arrived late. The guides describe problems already lived through, which is why they tend to dwell on the parts that actually catch people out.
How country facts are checked
The country pages are the most consequential thing here, so they follow a fixed process.
- Every fact is taken from a primary source where one exists: the national tax authority, the official e-invoicing portal, or the relevant EU legislation. Where a primary source is impractical, an established professional reference is used instead, and it is the source that gets cited.
- Each e-invoicing claim is stored with the date it was verified and a link to the source it came from, and both are published on the page. A claim you cannot date is a claim you cannot trust.
- Facts are re-verified independently rather than carried over from a draft. The 51 countries added in July 2026 were researched and then checked a second time against their sources before publishing.
- Where a rule is genuinely unsettled, such as a mandate announced but not yet in force, the page says so rather than picking whichever reading sounds more confident.
What is deliberately not claimed
- This is not tax or legal advice. It is general information written to help you ask better questions. Tax rules change, they vary by circumstance, and yours may not match the general case. For anything that matters, confirm with your national tax authority or an accountant.
- No invented statistics. If a number appears on this site, either it is countable, such as 61 country pages, or it carries its source. We do not publish figures like “users save four hours a week”, because we have not measured that.
- No fabricated testimonials. There are no reviews, no customer quotes and no logo walls on this site, because there is nothing real to put there yet. When there is, it will carry a name.
- No unverified competitor pricing. Every price on the comparison pages was read from the vendor's own pricing page on a stated date, links back to it, and quotes the standard rate rather than a promotional one that will expire. Each comparison also states plainly where the competitor is better, because several genuinely are in ways that matter.
Dates and staleness
Content that can go stale carries the date it was last checked. That is not decoration: an e-invoicing mandate verified in July 2026 may have moved by the time you read it, and knowing how old a claim is tells you how hard to lean on it. If you are making a decision with real money attached and the date looks old, treat the page as a starting point and confirm the current position.
Corrections
Errors get fixed rather than quietly buried. Email hello@invoiceforever.com with the page and what is wrong, and ideally a source. It reaches a person directly.
Factual corrections are made as soon as they are confirmed and the checked-on date moves with them. Anything substantial, meaning a change that could have led someone to act differently, is noted in the changelog rather than edited silently.
Commercial interests, stated plainly
Invoice Forever is free and funded by voluntary donations. There is no paid tier, no advertising, no affiliate revenue and no sponsored content. Nothing on this site is written because someone paid for it to be.
The obvious conflict is still worth naming: this site is published by a company that would like you to use its invoicing product. That is why the comparison pages list competitor advantages in full, and why the country guides do not end with a claim that our tool solves the problem being described. You are welcome to hold us to that, and to say so when we drift.