Danish Nationality: Requirements, Tests, and Dual Citizenship

Danish citizenship requirements fall into two very different tracks. If you have a Danish parent, you are usually Danish from birth. If you do not, you are looking at one of the strictest naturalization regimes in Europe: nine years of continuous residence, a permanent residence permit, advanced Danish language skills, a substantial employment history, financial self-sufficiency, a clean criminal record, and final approval by an act of Parliament. Denmark has allowed dual citizenship since September 1, 2015, so you generally do not have to give up your existing nationality to acquire Danish nationality.

Who Is Already Danish by Birth

A child born to a Danish mother or Danish father is a Danish citizen from birth, wherever in the world the birth takes place. There is one exception: if the parents are unmarried and only the father is Danish, the child acquires Danish nationality only if born in Denmark. Unmarried Danish fathers whose children are born abroad have to establish paternity and apply for citizenship on the child’s behalf. A child found abandoned in Denmark is presumed to be Danish unless evidence shows otherwise, and adopted children may acquire Danish nationality automatically where the adoption meets the conditions in Danish law.¹

If none of this applies to you, naturalization is the route.

Residence and Permanent Residence Permit

You must already hold a permanent residence permit before you begin the citizenship application. On top of that, the standard residence requirement is nine years of continuous residence in Denmark. Recognized refugees and stateless persons qualify after eight years. Spouses of Danish citizens who have held Danish citizenship for at least three years qualify after six to eight years, with the exact reduction tied to the length of the marriage.²

Employment History

You need at least three years and six months of ordinary full-time employment, or the equivalent as a self-employed person, within the last four years. Full-time generally means at least 30 hours per week. You also have to be connected to the labor market at the point the naturalization bill is submitted to Parliament. Limited work abroad can count if you were posted by a Danish employer or public authority.²

Language and Knowledge Tests

You must pass the Prøve i Dansk 3, an advanced Danish test covering reading, writing, and spoken Danish.³ In some cases the Prøve i Dansk 2 or equivalent qualifications from Danish educational programs will be accepted.⁴

You must also pass the Indfødsretsprøven, a citizenship knowledge test on Danish history, culture, and society. It is multiple choice with 40 questions, and you need at least 32 correct answers to pass. The parliamentary Naturalization Committee can grant exemptions from the language and knowledge tests where a serious physical or mental condition makes acquiring the skills impossible, but these exemptions are applied narrowly.

Self-Sufficiency and Public Debt

You must not have received benefits under the Active Social Policy Act or the Integration Act during the two years immediately before citizenship is granted, and your total time on those benefits over the preceding five years must not exceed four months.⁵

Any overdue debt to public authorities also blocks the application. Disqualifying debts include repayable social benefits, child support advanced by the government, nursery payments, student loans, and overpaid housing allowance. You generally have to clear the debt or enter into a repayment agreement and stay current on it before the application can move forward.²

Criminal Record

This is where many applications fail permanently. Any prison sentence, whether served or suspended, is a permanent bar to naturalization. The same permanent bar applies to convictions for terrorism, offenses against state security, gang-related crime, violence against children, and sexual offenses.²

Lesser penalties create waiting periods rather than permanent disqualification. A fine of 3,000 DKK or more, for instance, sets a waiting period of four and a half years from the date of the offense. Multiple penalties stack, each adding its own waiting period. You also cannot apply while any criminal charge is pending against you.²

Loyalty Declaration

Every applicant signs a formal declaration of loyalty and allegiance to Denmark and its democratic principles. It is not optional.

Simpler Routes for Nordic Citizens

Citizens of Finland, Iceland, Norway, and Sweden have two shortcuts. If you are over 18, acquired your Nordic citizenship by birth or adoption rather than by naturalization, and have lived in Denmark continuously for the past seven years with no criminal conviction during that time, you can become Danish by filing a declaration with the Ministry of Immigration and Integration.⁵

If you do not qualify for the declaration route, a relaxed naturalization track requires only two years of continuous residence. You still need to show three and a half years of full-time employment over the past four years, pass the self-sufficiency checks, demonstrate Danish language skills, and attend the constitution ceremony. Swedish and Norwegian speakers who completed primary school in their language may be exempt from some language and knowledge test requirements.⁵

Reacquiring Lost Citizenship Before June 2026

Former Danish citizens who lost their nationality by acquiring a foreign citizenship before September 1, 2015 have a limited window to reclaim it. You can reacquire Danish nationality by filing a declaration with the Ministry of Immigration and Integration, but the declaration has to be submitted between July 1, 2021 and June 30, 2026.⁶ You can file directly with the Ministry in Copenhagen or through a Danish embassy or consulate, though consular fees apply when you go through an embassy. Once approved, the Ministry issues a Certificate of Nationality, which you then use to apply for a Danish passport.⁷

Dual Citizenship

Since September 1, 2015, Denmark has recognized dual citizenship. You can acquire a foreign nationality without losing your Danish citizenship, and foreigners naturalizing as Danish are not required to give up their previous nationality.⁵ Denmark’s rules only govern the Danish side, though. Some countries still require renunciation when you naturalize, and some strip citizenship when you acquire a new one, so check the law of your other country before assuming you can hold both passports.

The 22-Year Rule If You Were Born Abroad to a Danish Parent

Danish citizenship inherited abroad is not automatically permanent. Under Section 8 of the Danish Nationality Act, you lose your Danish nationality at age 22 if you have never lived in Denmark and have never stayed there under circumstances showing a genuine connection to the country.¹ The only exception is if losing citizenship would leave you stateless.

To keep your nationality, apply for retention before your 22nd birthday. The application goes to the Ministry of Immigration and Integration, and you will need to show ties to Denmark: visits, family connections, language skills, and participation in Danish cultural life all help. Miss the deadline and there is no automatic route back.

How to Apply

Applications go through the Danish government’s digital portal using MitID for authentication. The forms ask for detailed family history, your full residential history through the residence period, employment records, and any interactions with the legal system. The Ministry cross-references answers against national databases including the Civil Registration System, so accuracy matters. You will need to upload your permanent residence permit, Danish language test results, citizenship test results, and proof of employment. If your records are incomplete, contact former employers or schools early, because missing documents can stall or sink an application.

The application fee for 2026 is 6,270 DKK, paid online at submission and non-refundable.³ If you are rejected and reapply more than once, a separate 3,000 DKK charge applies to subsequent re-applications after the first.

Parliamentary Approval and the Constitution Ceremony

Danish citizenship is granted by an act of Parliament, not by an administrative sign-off. The Folketing’s Naturalization Committee processes two bills each year, each listing approved applicants by name.⁸ Because the process runs on parliamentary scheduling, the timeline from application to final approval typically stretches well beyond a year, and some applicants wait three years or longer.

Once your name appears in a passed naturalization law, you must attend a constitution ceremony (grundlovsceremoni) at your local municipality. You sign a declaration to uphold the Danish Constitution and shake hands with a municipal official. The handshake requirement was introduced in 2018 and remains in force. Attendance is mandatory: skip the ceremony and you do not receive citizenship, regardless of parliamentary approval.⁹

1
Legislationline. Consolidated Act on Danish Nationality
2
Life in Denmark. Conditions for Foreign Citizens’ Acquisition of Danish Citizenship
3
Life in Denmark. Guidance on How to Apply for Danish Citizenship
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New to Denmark. Tests Equivalent to or Higher Than the Danish Language Test 3
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Nordic cooperation. Danish Citizenship
6
Ministry of Foreign Affairs of Denmark. Danish Citizenship
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Ministry of Foreign Affairs of Denmark. Reacquisition of Danish Nationality
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The Danish Parliament. The Naturalization Committee
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Aarhus Municipality. Constitution Ceremony – When You Apply for Danish Citizenship