Tax Identification Number (CPR) in Denmark: What You Need to Know in 2026

Kristian Ole Rørbye

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Updated July 22, 2026

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Background on the Danish tax system

Denmark uses a centralised registration system that connects your CPR number to taxes, health care, benefits and many everyday services. That integration is why the tax system may feel more visible than in other countries: your CPR ties a wide range of records together so authorities and service providers can verify identity and entitlements quickly.

High tax revenue funds the services you will use – healthcare, schools, infrastructure and social security – so timely and correct registration matters. If you plan to live or work here, getting your CPR number is a practical step that unlocks almost everything else.

What is the Tax Identification Number?

Denmark’s Tax Identification Number is the CPR number (Det Centrale Personregister). It is a unique 10-digit personal identifier issued to people registered in the civil register. Parts of the number encode the date of birth and a sequence number; the number is used by Skattestyrelsen (the tax agency), municipalities, banks and healthcare providers.

The CPR number is not a travel document or a substitute for your passport. It is a lifetime identifier linked to your official records while you are registered in Denmark. Expect to use it repeatedly: employers, banks and public services will ask for it.

Who needs a Tax Identification Number in Denmark?

Almost anyone who interacts formally with Denmark’s labour market, banking system or public services needs a CPR number. Typical situations:

• Employees: Employers use the CPR to report wages and tax withholdings.
• Students and researchers: For grants, stipends or local administration.
• Entrepreneurs and company owners: To register businesses, report taxes and sign bank contracts.
• Renting or buying housing: Landlords and utility companies often ask for a CPR.
• Longer-term visitors with economic ties: If you stay with work or study reasons you will generally need one, regardless of EU citizenship.

If you are still sorting visas or permits, check whether your visa requires registration first – some short-stay visitors do not register, while those with work permits must. See the rules for work permits and residence on official sites and consult guidance if you are unsure; for more on permits see work permits in Denmark.

Steps to obtain the Tax Identification Number

The process has clear steps. Missing or incorrect documents are the most common cause of delay, so prepare carefully.

1. Register your address (if moving into a Danish address). You must register your address with the municipality’s Citizen Service (Borgerservice) to be entered into the CPR. If you already live in Denmark and need to update your address later, see how to change address in Denmark.
2. Book a Borgerservice appointment. Most municipalities require an appointment. Bring originals and photocopies; bring a Danish or English translation for documents in other languages.
3. Attend the appointment and present documents. The official will verify your paperwork, register you in the civil register and assign a CPR number. If you have a partner or children, register them at the same time to avoid separate visits.
4. Get digital access (MitID) so you can use online services. Many processes – tax forms, health card ordering and banking – require MitID. You can start MitID after you have your CPR; the Borgerservice will explain the local procedure.
5. Receive postal confirmation and health card. After registration you will receive a letter with your CPR and usually a health insurance card (sygesikringskort) by post.

Using the Tax Identification Number in Denmark

Once you have your CPR, you will use it for many interactions. Practical examples and where to use caution:

• Employment: Give your CPR to your employer so they can report income and withhold tax correctly.
• Banking and payments: Banks require CPR to open accounts and to register your NemKonto (the default account for public payments). For guidance on bank accounts and IBAN formatting see understanding IBAN in Denmark.
• Tax administration: Your CPR links to Skattestyrelsen records – you will need it to file tax returns or check your tax card. For broader tax questions see our guide to tax in Denmark.
• Public services: Health care, education enrolment and many municipal services use your CPR to verify entitlement.
• Keep it private: Only give your CPR to trusted authorities and organisations that need it. Treat it like a bank account number for security purposes.

Common challenges and solutions

Problems usually fall into a few predictable areas. Below is a simple table of common issues and practical fixes.

If you are new to the country and wondering what else to sort out after your CPR, our New to Denmark guide lists the next practical steps – housing, banking, tax setup and getting a doctor.