Section 31 for former citizens, children, and grandchildren

Separate Section 31(1), 31(2), and 31(3), including the loss requirement, generation limit, and Slovak-citizenship rules.

Who may use Section 31?

Short answer: Section 31 covers defined former citizens and some children or grandchildren after a proven loss. It is not a general Czech-ancestry program.

Section 31(1): the former citizen

A person may make a declaration under Section 31(1) after actually losing Czech or Czechoslovak citizenship before 1 January 2014, unless an exact statutory exclusion applies. The loss date, method, and legal basis are central facts, not paperwork that can be replaced by a birthplace or family story.

Once every statutory fact is proved, the route is described as an entitlement rather than discretionary naturalization. That does not justify a public eligibility conclusion before the authority validates the status and documents.

Section 31(2): a separate former-Czechoslovak class

Section 31(2) separately covers a former Czechoslovak citizen who had permanent residence in the Czech Republic or Czech Socialist Republic before leaving for abroad, provided the declarant is not a Slovak citizen on the declaration date.

This is not the ancestor class named in Section 31(3). Its residence and status facts require their own reconstruction.

Section 31(3): child or grandchild

A child or grandchild may declare only where at least one parent or grandparent is or was a former citizen under Section 31(1). The ancestor does not need to reacquire first. But the ancestor must fit Section 31(1), including an actual qualifying loss before 2014.

Section 31(3) stops at a parent or grandparent. An intermediate parent's possible application does not create a retroactive great-grandparent route for an adult already born. The declarant must not be a current Slovak citizen.

Read the loss guide before assuming the predicate and the postwar-exclusions guide where German, Hungarian, Slovak, or Transcarpathian history appears.

When does acquisition happen?

Filing is not acquisition. Under Section 37(3), citizenship begins when the declarant receives the acquisition instrument. A post's later handover step therefore matters.

Records to find

What to do next

Classify the proposal as Section 31(1), 31(2), or 31(3). Do not blend their conditions. Obtain the status and loss files before selecting the official form, and route every Section 31 hypothesis to manual review.

Sources checked: 27 August 2026. Section 31 was rechecked in the official version effective 1 October 2025. Filing-date law and instructions control.

Official sources

Section 31 questions

Can a grandchild use Section 31?
Potentially, only through a grandparent who is or was a qualifying former citizen under Section 31(1).
Must that ancestor reacquire first?
No. The ancestor's qualifying former-citizen facts must be proved, but reacquisition first is not required.
Does Section 31 reach great-grandchildren?
No. Section 31(3) says parent or grandparent only.
Start my Czech family-line screening

Every Section 31 hypothesis needs manual document validation. The screening is not an official decision.