A rejected naturalisation file. A blocked contract. A missed hearing. These situations happen every week in Belgium due to avoidable mistakes in certified sworn translation. Here are the 5 most costly errors made by individuals and businesses, with practical advice on how to avoid them from the start.
Mistake #1: using Google Translate or DeepL for an official document
This is by far the most common mistake. When faced with an urgent summons or a foreign form, the instinct is to copy-paste into DeepL to "save time". The result is systematically rejected. Our guide explains why automated tools are not sufficient.
Why it gets rejected: Belgian authorities only accept translations signed and stamped by a sworn translator recognised by a Court of Appeal. A linguistically perfect translation without that official stamp has no legal value whatsoever.
Real-world consequences
File returned with a request for supplementary documents. Additional delays of 4 to 12 weeks. In some cases (naturalisation, visa with a fixed date), this may mean restarting the entire procedure from scratch.
How to avoid it: order a sworn certified translation directly from a certified agency. The premium over an automatic translation is typically 30 to 70 euros for a simple deed, far less than the cost of a rejected file.
Mistake #2: using a non-sworn translator
Even if your neighbour or colleague speaks both languages perfectly, even if you find a professional translator on an online platform, that is not enough. A non-sworn translator cannot issue a legally valid translation in Belgium.
Why it is dangerous: some translators affix a stamp or a homemade "declaration of conformity" that mimics the appearance of a sworn translation. Experienced authorities immediately recognise the difference. A rejection, or even a suspicion of document falsification, may follow.
Real-world consequences
File rejected, extra costs for retranslation, and sometimes complications if the authority suspects an attempt to deceive a public body.
How to avoid it: verify that the translator appears on the official list of sworn translators-interpreters of the SPF Justice (just.fgov.be), or use an agency that guarantees the sworn status of its translators.
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Order a sworn translationMistake #3: not translating all required documents
Applicants carefully prepare the "main" documents but overlook supplementary items that are nonetheless required: marginal notes on a birth certificate, certificate of celibacy, complementary extracts, judgments appended to a divorce decree, and so on.
Why it happens so often: official lists from Belgian authorities are not always exhaustive and may vary according to individual circumstances. A birth certificate may contain marginal notes (acknowledgements of paternity, subsequent marriages) that must be translated along with the main document.
Real-world consequences
File rejected as "incomplete". New request for supplementary documents, further delays of 6 to 16 weeks. For a visa with a fixed deadline, this can be catastrophic.
How to avoid it: have every document translated in full, including marginal notes and appendices. Ask the receiving authority for a precise list of required documents before ordering translations.
Mistake #4: submitting a translation in the wrong format
A sworn translation must generally be presented in a specific format: a bilingual document or a standalone translation carrying the translator's certification details (name, registration number, Court of Appeal, date, original signature and stamp).
The most common format errors:
- Translation without the date and registration number of the sworn translator
- Translation without an official stamp (a digital signature alone is not valid for certain authorities)
- Translation on plain paper with no professional letterhead from the translator or agency
- Document submitted without the original: some authorities require the translation to be presented together with the physical original
- Translation as a PDF without an original signature for files that require a paper document with a physical stamp
Real-world consequences
Technical rejection of the file for "non-compliance with format requirements". Even if the translation is perfect, a non-compliant format can be enough to invalidate the entire document.
How to avoid it: always tell your service provider which authority and which country you are submitting to, and whether a paper original is required. Professional agencies know the formats expected by each authority.
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Mistake #5: waiting until the last moment
This is arguably the most underestimated mistake. Obtaining a sworn translation takes time: a minimum of 2 to 5 working days on standard service, sometimes more for rare languages or voluminous documents.
Situations where waiting proves costly:
- Court summons received 3 days before the hearing: an express translation is possible but costs 30 to 50% more
- Visa file with a fixed consular appointment date: if the translation arrives late, the appointment is lost and a new slot may not be available for 2 to 3 months
- Closing of an M&A deal or contract signing with a contractual deadline: without a compliant translation, the deal may fall through
- Submission of a naturalisation file with a quarterly processing session: missing the session means an additional 3-month delay
The golden rule
Always plan at least 2 weeks ahead of your deadline for a standard translation. If you have a week or less, the express service is available, but planning ahead is always less stressful and less expensive.
How to avoid it: as soon as you know an official procedure is approaching, order your translations immediately. TranslateBE offers a 24h express service for urgent cases, but the standard turnaround (3-5 days) remains more affordable.
The checklist to avoid repeating these mistakes
Before submitting a file containing sworn translations, verify the following:
The translation is signed and stamped by a recognised sworn translator
The translator is registered on the official list of the SPF Justice
All required documents are translated, including marginal notes
The format meets the requirements of the receiving authority
You have both the original AND the translation ready to submit together
The translation is recent (some authorities require documents less than 3 or 6 months old)
You have allowed sufficient time before your deadline
Frequently Asked Questions (FAQ)
What should I do if my file has already been rejected for a non-compliant translation?
Do not panic. Order a compliant sworn translation immediately and resubmit your file with a covering letter. In most cases, a file rejected on formal grounds (non-sworn translation) can be resubmitted without having to restart the entire procedure. Check with the authority concerned.
Can I get a refund if the translation is rejected?
At TranslateBE, if your translation is rejected for a reason attributable to our work (translation error, incorrect format, unrecognised translator), we redo it free of charge and on an urgent basis. That is our quality guarantee.
How long is a sworn translation valid?
The translation itself does not legally expire. However, some authorities (consulates, embassies, Public Prosecutor's offices) require recently translated documents: generally less than 3 to 6 months old, sometimes 12 months. Check the specific requirements of the receiving authority.
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