Family Reunification for Unmarried Partners: 3 Routes in 2026

Being unmarried does not necessarily mean that you cannot live with your partner in Denmark. In 2026, unmarried couples may have different options for obtaining residence, depending on how long they have lived together, the status of the partner in Denmark, and whether Danish or EU rules apply. A family reunification Lawyer can help you identify which route may be relevant and what evidence you need to provide.

The important point is that there is no single “unmarried partner visa”. Different legal routes can apply to couples who are not married, and the requirements can be quite different.

Route 1: Family reunification as a cohabiting partner

Under the Danish family reunification rules, an unmarried partner may qualify if the couple can demonstrate permanent cohabitation.

The Danish Immigration Service generally defines permanent cohabitation as having lived together at the same address for at least 18 months. Evidence of the shared household is therefore an important part of an application.

For example, evidence may include:

• Rental agreements showing both partners at the same address
• Official registration records
• Utility bills or other household documents
• Correspondence showing the shared address
• Other reliable evidence demonstrating that the relationship and cohabitation are genuine

The exact documentation needed can depend on the circumstances of the couple.

It is also important to remember that cohabitation is only one part of the family reunification requirements. Depending on the sponsor and circumstances, other conditions can apply, including financial, housing, integration and age-related requirements.

What if you have not lived together for 18 months?

This is one of the most important questions for unmarried couples.

If you have not yet completed the usual 18-month period of cohabitation, you should not assume that an application will automatically be accepted. The Immigration Service states that the 18-month requirement can be suspended in special situations.

This makes the individual circumstances of the relationship particularly important.

Route 2: Residence under EU rules

A different route can be available when the partner living in Denmark is an EU citizen exercising EU free-movement rights in Denmark.

Under EU rules, a non-EU unmarried partner can potentially qualify as the cohabiting partner of an EU citizen. The relationship generally needs to be longstanding, and SIRI states that, as a rule, the couple should have been cohabiting for 18 to 24 months before submitting the application.

The EU citizen in Denmark must also have an independent right of residence under EU rules, such as through:

• Employment
• Self-employment
• Study
• Sufficient funds
• Certain other EU-law residence grounds

The sponsor's EU residence status is therefore central to this route.

The couple may also need to demonstrate that the relationship is genuine and that their cohabitation is real. SIRI can request documentation and may assess whether there has been continuous cohabitation.

Why is the EU route different?

EU free-movement rules operate differently from the ordinary Danish family reunification rules.

For example, an EU residence document for a qualifying family member does not require the same application framework as ordinary family reunification under the Danish Aliens Act. The application is handled by SIRI, and there is currently no processing fee for this EU residence route.

However, this route is only relevant when the conditions for EU residence are actually satisfied. Simply having an EU passport somewhere in the family is not enough.

Route 3: Family reunification with a Danish citizen under EU law

There is another important possibility for some unmarried partners of Danish citizens.

If a Danish citizen has exercised their EU free-movement rights by genuinely living in another EU/EEA country or Switzerland and then returns to Denmark with their partner, the couple may potentially be covered by EU rules.

For an unmarried partner, SIRI states that the Danish citizen and partner generally need to have been cohabiting for 18 to 24 months. The Danish citizen must also have genuinely exercised their right of free movement and established genuine and effective residence in another EU/EEA country or Switzerland.

This is sometimes relevant for Danish citizens who have lived together with their partner in another EU country before returning to Denmark.

The rules are quite specific. A short trip or temporary stay in another EU country does not automatically establish the required genuine residence. SIRI assesses whether the move and residence were real and effective.

Which route applies to your relationship?

The correct route depends primarily on your circumstances.

This table is only a starting point. The detailed requirements should always be checked against your individual circumstances.

What documents should unmarried couples prepare?

Because an unmarried relationship does not have a marriage certificate, evidence of the relationship and shared life can become particularly important.

Depending on the route, you may need evidence such as:

• Proof of shared residence
• Rental or housing documents
• Official address registration
• Joint financial or household documents
• Travel history
• Correspondence
• Evidence of a long-term relationship
• Identity and passport documents
• Evidence relating to the sponsor's residence status
• Employment, study or financial documentation where relevant

The purpose is not simply to provide a large number of documents. The documents should present a clear and consistent picture of the couple's actual circumstances.

Does being unmarried make the application harder?

Not necessarily.

The key issue is whether the couple satisfies the legal requirements for the particular residence route. However, unmarried couples may need to provide stronger evidence of cohabitation and the genuine nature of their relationship because there is no marriage certificate establishing the legal relationship.

Authorities can assess whether a relationship is genuine. Under the Danish family reunification rules, a relationship entered into primarily to obtain a residence permit can be considered a marriage or relationship of convenience.

For EU applications, SIRI can similarly examine whether the relationship is genuine and whether the cohabitation is real.

What happens if the application is approved?

If an application under the ordinary Danish family reunification rules is approved, the applicant will generally receive a temporary residence permit. The official guidance states that such a permit is typically valid for two years and may be extended if the requirements continue to be met. The holder can work in Denmark while the permit is valid.

EU residence is different because it is based on the EU citizen's underlying right of residence. The family member's right is derived from the sponsor's EU-law residence status.

This distinction can become important later if the couple separates, the sponsor changes residence status or the sponsor stops meeting the conditions for EU residence.

What should unmarried couples do before applying?

Before submitting an application, it is sensible to check three things:

First, establish which legal route applies.Do not automatically use the ordinary family reunification application simply because your partner lives in Denmark.

Second, document your relationship carefully.If cohabitation is a requirement, make sure you can demonstrate where and for how long you have lived together.

Third, check the additional requirements.Age, integration, financial, housing and other requirements can apply under the Danish rules, while EU applications have their own conditions.

A mistake in choosing the application route can create unnecessary delays or complications.

Final thoughts

Unmarried partners can have options for living together in Denmark in 2026, but the right route depends on the couple's circumstances. Ordinary Danish family reunification may be available to permanent cohabiting partners, while EU rules can provide separate possibilities for partners of EU citizens or Danish citizens who have exercised EU free-movement rights.

The most important step is therefore to identify the correct legal basis before applying and prepare evidence that clearly supports your relationship, cohabitation and the sponsor's status.

If you are unsure which route applies to you, obtaining individual legal advice before submitting the application can help you understand the requirements and avoid preventable documentation or application errors.