How to Get an OIB in Croatia (2026 Guide for Foreigners)

If you are planning to live, invest, or inherit property in Croatia, obtaining an OIB (Personal Identification Number) is one of the first legal steps you must complete.

The OIB is required for almost all administrative, legal, and financial activities in Croatia. Therefore, understanding how to get an OIB as a foreigner will help you avoid delays and complete processes smoothly.

If you need an OIB for inheritance, you should also read our guide on inheritance in Croatia for US citizens to understand the full legal process.

What Is an OIB in Croatia?

The OIB (Osobni identifikacijski broj) is a unique 11-digit identification number assigned by the Croatian Tax Administration.

It is used to identify individuals in all official transactions, including:

• buying or selling property
• inheritance proceedings
• opening a bank account
• paying taxes
• starting a business

Without an OIB, you cannot complete most legal procedures in Croatia.

Who Needs an OIB?

Foreigners must obtain an OIB if they plan to engage in any formal activity in Croatia.

This includes:

• foreign property buyers
• heirs in inheritance proceedings
• business owners and investors
• individuals opening a Croatian bank account

In practice, almost every foreign client dealing with Croatian authorities will need an OIB.

How to Get an OIB in Croatia

You can obtain an OIB through a simple administrative process. However, you must follow the correct steps.

Option 1: Apply in Person

You can apply directly at a local office of the Croatian Tax Administration.

The process includes:

• filling out an application form
• presenting a valid passport
• submitting the request

In most cases, the OIB is issued on the same day.

Option 2: Apply Remotely (Recommended)

Most foreigners choose to apply remotely through a Croatian lawyer.

In this case:

• you grant power of attorney
• the lawyer submits the application on your behalf
• you receive your OIB without traveling to Croatia

This option is faster and more convenient, especially for clients living abroad.

Required Documents

To apply for an OIB, you typically need:

• a valid passport or ID
• a completed application form

In some cases, additional documents may be required depending on your situation.

If you apply through a lawyer, you will also need to provide a signed power of attorney.

How Long Does It Take to Get an OIB?

The process is usually very fast.

• in-person applications: same day
• remote applications: a few business days

Delays are rare but can occur if documents are incomplete.

Why the OIB Is Important

The OIB is essential for completing legal transactions in Croatia.

Without it, you cannot:

• buy or sell property
• inherit assets
• open a bank account
• register ownership in the Land Registry

Therefore, obtaining an OIB should be one of your first steps when dealing with Croatian legal matters.

Common Mistakes to Avoid

Although the process is straightforward, some common mistakes can cause delays:

• providing incomplete documentation
• using incorrect application forms
• not granting proper authorization for remote applications

Working with a legal professional helps avoid these issues.

Do You Need an OIB for Property or Inheritance?

Yes, an OIB is mandatory in both cases.

For example:

• property buyers need an OIB before signing contracts
• heirs need an OIB before inheritance proceedings can be completed

If you are dealing with inheritance, you should also review our detailed guide on how inheritance works in Croatia for US citizens.

Frequently Asked Questions

What is an OIB in Croatia?

An OIB is a personal identification number required for legal and financial transactions.

Can foreigners get an OIB?

Yes, foreigners can easily obtain an OIB either in person or remotely.

Do I need to travel to Croatia?

No, you can apply through a lawyer with a power of attorney.

How long does it take?

It usually takes the same day or a few business days.

Is an OIB required for inheritance?

Yes, an OIB is required to complete inheritance proceedings.