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Signature Circular Translation

A signature circular is a notarial document showing who may represent a company, to what extent and in what manner. It is drawn up on the basis of the company’s entry in the trade registry and its authority to represent; the names, titles and specimen signatures of the authorised persons appear in it. Short as it looks, it is the official answer to the question of whether a given signature binds the company.

6 min read Updated: 13.08.2026

The need to use it abroad arises whenever the company takes on an obligation across a border. Opening an account with a foreign bank, entering a tender or signing an international contract, the other side wants to see that the person signing genuinely holds the authority to do so. That assurance rests entirely on the translation of the circular.

Within Türkiye the circular usually serves in its Turkish original; the need for a translation appears when the document crosses a border. A Turkish company bidding for a tender, opening an account or signing a contract abroad has its circular translated into the target language, while for a foreign company’s transaction in Türkiye the equivalent representation document from its own country is rendered into Turkish. In whichever direction, the document is translated so that the other side can understand the signing authority. Where it will be used also settles the layer of certification: a circular going abroad enters the apostille chain, whereas some transactions are content with a sworn translation alone. That is why the destination and the purpose of the document are clarified before translation begins.

Authority to represent: sole or joint?

The most critical piece of information in a circular is whether a signature is valid on its own or only together with another authorised person. Sole signing authority means that one person can bind the company alone; joint signing authority requires two or more authorised persons to sign together. If that distinction is lost in translation, the other side may take an insufficient signature to be adequate, or reject one that was perfectly adequate.

The scope of the authority may also be limited in the document: powers can be defined up to a certain amount, for certain transactions, or for a fixed period. Every one of those limits has legal effect and is preserved exactly in the translation. Reducing it to a bare “is authorised” risks presenting a limited power as an unlimited one.

A signature circular only makes sense alongside the company’s trade registry records and its registered representation structure. The trade name, the registry details and the references to resolutions of company organs must be handled consistently throughout. Translating the trade name freely is a common error: a trade name is an identity, so it is carried across as it stands, with an explanation added where necessary.

The circular rarely goes abroad on its own; it usually reaches its destination in the same file as the company’s certificate of activity, trade registry records and articles of association. The trade name, the capital figures and the names of the authorised persons must agree across all of them. A trade name written differently in one document weakens the impression that the whole file belongs to the same company.

The question of how current it is

The most frequently overlooked aspect of a circular is how up to date it is. When the company’s management, its authorised persons or its manner of representation changes, the old circular ceases to be valid and a new one is drawn up. If an out-of-date circular is submitted abroad, the other side may ask for a current document, so it is best to work with a circular dated close to the transaction.

The date of issue, the notary’s details and the notarial register number are preserved exactly in the translation. Together they show the representation structure the circular reflects and the date as at which it does so. Omitting the date or the notary’s details makes it impossible to judge whether the document is still current.

Certification layers and the apostille

Because a signature circular is a notarial document, the apostille needed for use abroad is obtained not from the governor’s office but from the relevant judicial justice commission. The same distinction applies to other notarial documents such as contracts and powers of attorney, and it is often confused. Once the apostille is in place, the document is translated into the target language by a sworn translator; some transactions additionally call for a notarised translation.

Purpose of useLevel of certification
Bidding for a tender abroadNotarisation + apostille
Opening an account with a foreign bankNotarisation + apostille
Proving signing authority under an international contractNotarisation + apostille, with a notarised translation if required
Setting up a subsidiary or branch abroadNotarisation + apostille
As a signature circular is a notarial document, its apostille is obtained from the relevant judicial justice commission.

Its place in overseas tender and banking files

The signature circular is effectively the identity page of a corporate file, and it is among the first documents requested when bidding for a tender, opening a foreign bank account or establishing a branch. It is the document the other side uses to verify the authority of whoever signs the contract or the application. If the circular is missing or out of date, the transaction goes no further however well prepared the rest of the file may be, and the application is left in abeyance.

In such files the circular is never assessed on its own but together with the company’s incorporation and activity documents. The title given to an authorised person in the circular is expected to match the title used in the other documents. Preserving that link in the translation spares the other side any hesitation as they move between documents and allows the file to be read as a whole.

Not to be confused with a power of attorney

Signature circulars and powers of attorney are often mixed up, although they do quite different work. A circular shows the authority to represent as determined by the company’s organs, together with the specimen signature; a power of attorney grants authority to a named person for specified transactions. Knowing from the start which of the two a transaction calls for saves the time lost in having the wrong document translated.

The two sometimes sit side by side in the same file – a person authorised to represent the company may, for instance, appoint someone else as their attorney. Both the circular and the power of attorney then have to be translated, and the definitions of authority in each are expected to be consistent with the other. A break anywhere in the chain of authority puts the basis of the transaction in doubt.

Common mistakes with signature circulars

  • Leaving the distinction between sole and joint signing authority unclear in the translation.
  • Translating the trade name and so damaging the identity of the document.
  • Reducing the limits on authority to a general phrase such as “is authorised”.
  • Using an old circular after the management has changed.
  • Applying to the governor’s office for the apostille on a notarial document.

Let us prepare your corporate documents together

A signature circular usually goes abroad in the same file as the company’s articles of association, certificate of activity and registry records, and consistency of trade name and authority details across those documents matters. Once you send them to us, we plan the chain of certification and the consistency of terminology with you. You can review the scope of our work on the translation services page and the other relevant documents in our document guide, and send us your file through the quote form.

This page is for information only; the format of the document and the chain of certification vary according to the country in which the transaction takes place. The safest course is to ask the relevant office for written confirmation before you begin.

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