Legal Q&A · Company & shareholders

I changed my surname. What documents are needed to update the Commercial Register?

Law as at 17 August 2026

Answered by , Czech and Slovak attorney, admitted to the Slovak and Czech Bars (SAK 300422 · ČAK 19654).

Short answer

A shareholder or managing director’s name change, for example after marriage, must be reflected in the Commercial Register. Sensitive documents such as a marriage certificate or identity card are not required; a declaration by the applicant showing the change generally suffices. From 17 August 2026, registration proceedings are governed by the new Commercial Register Act, No. 29/2026 Coll.

Why must a surname change be registered?

Shareholders’ and managing directors’ first names and surnames are recorded in the Commercial Register. A change, typically after marriage, must be reflected there. The shareholder remains the same person; only identifying data are updated. The company applies through its statutory body.

Must I provide a marriage certificate or identity card?

Generally, sensitive personal documents need not be submitted, including marriage certificates, identity cards or copies. Registry practice allows documents containing more information than the change requires to be replaced by the applicant’s declaration with equivalent relevant content showing the changed surname. The applicant is responsible for its accuracy. This protects personal data and simplifies the process.

What changes from 17 August 2026?

Timing matters: from 17 August 2026, Commercial Register proceedings are governed by the new Commercial Register Act, No. 29/2026 Coll., which revises filing procedures and supporting documents. A name change remains routine, making correct first-time filing especially important. Under the new rules, the registry court does not permit supplementation and refuses a defective application. The remedy is an objection within 15 days. Only registration through a notary acting as registrar provides for a request to supplement. Proceedings begun by 16 August 2026 are completed under the previous rules.

How we handle it

We prepare the application and declaration and submit them through Commercial Register changes. For ongoing oversight of corporate matters and deadlines without having to remember each task yourself, we offer an external legal department.

This answer provides general information on the law as at 17 August 2026. It does not constitute legal services or replace an assessment of an individual case. The details of your situation may differ. Book a consultation to discuss them.

More legal questions

All questions and answers
  1. Must I pay tax on income from selling a business share in an s.r.o.? Generally, yes. An individual’s income from transferring a share in an s.r.o. or limited partnership, or cooperative membership rights, is other income under Section 8(1)(f) of the Income Tax Act. Tax applies to the difference between income and expenses, with the capital contribution or acquisition cost treated as an expense. A loss cannot be claimed, and the exemption is limited.
  2. Is an s.r.o. shareholder entitled to a share of the remaining liquidation proceeds? Yes. When a company is dissolved with liquidation, each shareholder is entitled to a share of the assets remaining after liquidation. Distribution takes place only after all creditors have been satisfied; shareholders come last. By default, the share follows the ratio of the shareholder’s paid contribution to all paid contributions, unless the memorandum specifies another method.
  3. How are employee shares and business interests under an ESOP taxed? Acquisition of an employee share or business interest may be exempt if two conditions are met: the company has not paid profit distributions and its shares have not been admitted to a regulated market. Tax is deferred to exit rather than waived. On a later sale, the employee cannot deduct the value of an interest acquired this way, and the €500 exemption does not apply either. Any price actually paid and other costs permitted by law must, however, be assessed separately.
  4. Can an s.r.o. shareholder replace a cash contribution with a non-cash contribution? The Commercial Code has no direct mechanism for swapping a cash contribution for a non-cash one, but the result can be achieved in two steps. First, increase share capital with an asset valued by an expert. Then, once capital exceeds the statutory minimum, reduce it and return the original cash contribution. Minimum capital and contribution levels and all increase and reduction rules must be observed.

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Mgr. Patrik Tulinský, LL.M. Czech and Slovak attorney · SAK 300422 · ČAK 19654

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