A seal that tells the truth today.
The Basic seal isn't a sticker a company keeps forever. It is a live image served by basic.lu, so it always shows the company's current standing: green while it meets the standard, red when it doesn't.
Five parts, each with a job.
- 1The ring colourGreen means the company is recognised and compliant today. Red means it isn't, for one of the reasons the bottom line spells out.
- 2“A Basic Company”The name of the recognition. Only companies on our register may display it.
- 3The “b” markbasic's mark, at the centre: the foundation the five pillars rest on.
- 4The certificate numberUnique to one company. Type it on the verify page to see who it belongs to.
- 5The status line“Recognised since 2026” when all is well; otherwise “Non-compliant”, “Recognition expired” or “Recognition revoked”.
Green has to be earned every year.
Every time the seal loads, basic.lu checks the company's record and draws the seal from it. Nobody can turn a red seal green by editing a file on their own website.
| What the record says | Seal | Bottom line reads | How it changes back |
|---|---|---|---|
| Recognised, within its 12 months, no open finding | Green | Recognised since 2026 | — |
| basic has found a pillar no longer met | Red | Non-compliant | The company fixes the issue and basic restores compliance |
| 12 months passed without annual surveillance | Red | Recognition expired | The company completes annual surveillance |
| Recognition withdrawn | Red | Recognition revoked | Only by a new application |
| Number not on the register | Grey | Not recognised | — |
A change to a company's record shows on its seal within about an hour, as browsers refresh the image.
Nine characters, no guesswork.
Each recognised company gets one number for as long as it is recognised. It is short enough to read out over the phone, and built so mistakes show up.
- No dashes and no prefix: just letters and digits.
- No 0, 1, I or O in the random part, so nothing can be misread.
- The last character is a check, worked out from the other eight. Mistype one character or swap two, and the verify page will almost always tell you the number isn't valid instead of showing the wrong company.
- Upper or lower case, with or without spaces: the verify page reads it the same.
Certificates issued earlier keep their original numbers, such as BASIC-2026-0001. They verify exactly as before.
How to check a seal
- Click the seal. A genuine seal opens the company's record on basic.lu. Check the address bar.
- Make sure the company name on the record matches the business you're dealing with.
- Check the status is Recognised and the valid-until date is in the future.
- Seal won't click, or the record doesn't match? Type the number on the verify page, and report it if something is wrong.
Using your seal
Do
- Use the embed code from your account, so it stays live and clickable
- Show it on your website, proposals, email signature and invoices
- Quote your certificate number when customers ask
Don't
- Save it as a static picture or redraw it
- Use it for a parent, branch or sister company that wasn't assessed
- Keep showing it once it turns red
What the seal does and doesn't mean
It means that, when basic last checked, the company met all five pillars of the Basic Standard: sound books, fair pay, compliance, safe systems and grounded decisions, and that it keeps being checked every year.
It doesn't rate a company's products, prices or size, and it isn't a guarantee of financial strength or future performance. It confirms the essentials were in order when we checked.