Who's Included in a Turkish Citizenship Application: Spouses, Children, and the 2025 Rules

A single qualifying investment, one application, and the whole nuclear family naturalises at the same presidential decision. That’s the headline and it remains accurate in 2026. The detail beneath it, particularly after the 2025 procedural changes, deserves a closer read; for some families it shifts the work substantially even though the outcome doesn’t move.

Who fits in the application

The Turkish program covers the principal applicant, their legal spouse, and any children under 18 at the date of application. That’s the entire scope. Everything you read about extended families in this program belongs to the Caribbean schemes, not Türkiye’s.

A few details that catch families out:

• “Under 18” is measured at filing, not at decision. A child who turns 18 between filing and the presidential decree is still inside the file as long as they were a minor on the day it went in.
• The principal applicant can be either spouse. For some families it pays to think about which one carries the citizenship, usually a tax decision rather than a Turkish one.
• A spouse who is already a Turkish citizen does not need to be in the file. The other spouse and the children apply normally.

The 2025 spouse-side changes

Before 2025 the spouse simply rode the principal applicant’s file. The procedural updates introduced that year added two requirements:

1. The spouse obtains their own short-term residence permit. This runs alongside the principal applicant’s permit and follows the same logic: a legal checkpoint, not a relocation request, with no minimum-stay obligation. It does add a parallel administrative thread to the project.
2. The spouse provides a separate criminal record certificate, fully apostilled and translated, from country of citizenship and any country of recent residence.

Neither change alters who can apply. They do change how complete the file needs to be on day one, and they make spouse document collection an early-phase task rather than a late-phase one. We see families try to file with the principal’s documents ready and the spouse’s still in transit; that costs four to six weeks every time.

Children: documentation and the school question

For each child the file needs:

• Birth certificate, apostilled and translated, listing both parents.
• Passport (or birth certificate plus parental passports if the child doesn’t yet hold their own document).
• Custody documentation where parents are divorced or where the child travels on a sole parent’s documents.
• Biometric photographs to Turkish specification.
• Biometric fingerprinting for children old enough — the practice varies a little by office and age. Plan for the whole family in Türkiye for the biometrics day; it’s logistically simpler.

The school question — if you’ll actually base the family in Türkiye for part of the process — is its own conversation. International school capacity in Istanbul and Antalya is real but stretched; intake calendars don’t align with citizenship application timelines. Decide whether you’re using the Turkish base or simply receiving the citizenship before you build any plan that depends on a particular school year.

Edge cases worth flagging

Marriages registered abroad. Foreign marriage certificates are accepted with the usual apostille and sworn translation. Sham marriages — and the registry office sees a lot of them — produce immediate refusals and they don’t quietly go away.

Polygamous marriages. Turkish law recognises only monogamous marriage. Where a family arrives with a polygamous structure, one spouse and her children are the file; the others have separate routes outside the program.

Children with a different surname from the parent. Resolve the documentary mismatch with a notarised parental declaration before filing, not after. Same advice as on the requirements page, and it matters most for the principal-applicant-and-children configuration where the parents’ marriage isn’t part of the file (single parents, deceased spouse, custody arrangements).

Adult children at a transition age. If your child will turn 18 within the next year and you’d like them included, the timing question becomes practical. The realistic answer is usually “file now, before the eighteenth birthday” rather than “wait six months and pay for a separate application later.”

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If your family configuration is unusual in any of the ways above, the answer is rarely the brochure version. Tell us about your specific situation — for cases that don’t fit the standard mould the 30-minute conversation is worth more than the page.