How Long a Certified Translation Actually Takes, and What Makes It Slower

September 16, 2026 · The Editor, O Gravata Translations

Someone asks how long a certified translation takes, and the honest answer is that the translation itself is rarely the part that decides. A two-page birth certificate in a format the translator has seen before is a small piece of work. What stretches a file from a few days to a few weeks is almost always something around the translation: a scan that cannot be read with confidence, an apostille that was never obtained, or a set of documents that arrives one page at a time over three weeks because each one was ordered separately.

This matters because people plan backwards from a submission date. They assume the translation is the last small step and leave it to the end, when in practice it sits in the middle of a chain that includes ordering the original document abroad, having it authenticated, and only then translating and certifying it. Understanding which parts of that chain are under your control is more useful than any number of days quoted in advance.

What the clock is actually measuring

A certified translation in Portugal is two operations joined together. There is the translation itself, and there is the certification — the act that makes it usable before a Portuguese authority. Under Article 38 of Lei 76-A/2006, that certification has to come through one of four channels: a Portuguese lawyer, a Portuguese notary, a Portuguese consulate, or the Portuguese Chamber of Commerce.

So the working time covers reading the source document, producing the Portuguese version, and then the certification step, which involves the certifying professional reviewing the translation and attaching the declaration to it. Neither part is instantaneous, and neither is the bottleneck in most delayed files.

Why no one can responsibly quote a fixed number

Turnaround depends on the length and density of the document, how legible it is, how unusual the source format is, and how many documents are in the file. A short standard certificate and a forty-page company record are not the same job, and a handwritten record from the 1940s is not the same job as a modern printed one.

It also depends on what the receiving office expects. Some authorities want the translation physically bound to the original or to a certified copy; some accept a digital version; some have preferences about how the certification is presented. Those requirements shape the final steps, including whether anything has to be posted. The only reliable way to know is to ask the office that will receive the document what form they require, before the work is commissioned rather than after.

Illegible scans

The most common avoidable delay comes from the file the translator is given to work from. A photograph taken at an angle in poor light, with a shadow across the registrar's stamp or a corner cut off, is not something a translator can guess their way through. Names, dates, place names and registry numbers have to be reproduced exactly, and a certification of accuracy cannot honestly be attached to a reading that is partly inferred.

What happens then is a round of questions and a request for a better copy, which adds days for no other reason. Scanning flat, at a decent resolution, with every edge, seal, stamp and marginal annotation visible — including anything printed on the reverse — removes that whole exchange. Marginal notes on civil registry documents matter; they are frequently the part cropped out.

The missing apostille

Apostille and translation are separate steps, done by different bodies, and the order usually matters. An apostille issued in the country of origin authenticates the foreign document. If the apostille is obtained after the translation, the translated file no longer corresponds to the complete document, and in many cases the work has to be repeated so that the apostille is included.

Whether an apostille is needed at all depends on the issuing country and on the office receiving the document, so that should be confirmed first. Where it is needed, it is worth treating as the long pole in the timeline: it is arranged abroad, through an authority with its own procedures and its own queue, and it is entirely outside the translator's control. A file that arrives already apostilled is in a fundamentally different position from one that does not.

Documents sent one at a time

Files submitted to Portuguese authorities are usually sets, not single pages. When those documents arrive in a drip — one now, two next week, one more after a reminder — every arrival restarts the handling: intake, review, questions, certification, delivery. The same set handled together is one pass.

There is a second cost to drip-feeding. Names have to be rendered consistently across a whole file, and inconsistencies between documents are easier to spot and query when everything is visible at once. Sending a partial set also hides problems until late; a missing apostille on the last document to arrive can hold up the entire submission after everything else is finished. If one document is genuinely still being issued abroad, say so at the outset so it can be planned for rather than discovered.

Bottom line

The translation is rarely what makes a file slow. Clear scans of complete documents, apostilles obtained before translation rather than after, and a full set sent together remove most of the delay that is actually within your control. Confirm the format and authentication the receiving office requires before commissioning anything, because that is the one variable no general guide can answer for you.

This article is general information, not legal advice. Requirements vary by institution and by case — confirm with the office that will receive your documents.

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