Getting Your OIB
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What is OIB and why you need it
OIB stands for Osobni identifikacijski broj. It is an 11-digit personal identification number.
You need an OIB for almost everything in Croatia: opening a bank account, signing a rental contract, starting a job, and dealing with government offices.
Get your OIB as soon as possible. You will need it to open a bank account and sign contracts.
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Documents you need
EU citizens: bring your national ID card or passport.
Non-EU citizens: bring your passport with proof of citizenship.
No other documents are required. The service is free.
What you need
- Passport or national ID card
- For non-EU: proof of citizenship (passport is enough)
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Method 1: In person at Tax Administration
Visit any regional Tax Administration (Porezna uprava) office. You do not need to go to a specific office.
Go to the information desk and ask for OIB assignment. Fill out a short form. The staff will process your request.
Office hours are usually Monday to Friday, 8:00 to 15:00. Expect to wait 30-60 minutes.
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Method 2: Apply by email
You can email your application to oib@porezna-uprava.hr.
Attach a scan or photo of your passport. Write a short request in English asking for OIB assignment.
They will reply with your OIB by email. This usually takes 3-8 working days.
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Method 3: Online via e-Gradani
EU citizens with an e-Citizens (e-Gradani) login can apply online.
Visit the e-Gradani portal and look for the OIB assignment service.
This method is only available to EU citizens with a compatible electronic ID.
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Get your OIB certificate
After you receive your OIB number, you can get an official certificate called Potvrda o OIB-u.
Pick it up at any Tax Administration office, or download it from the e-Gradani portal (EU citizens).
Once you have your OIB, the next step is to register your address with police and open a bank account.