How do you get an OIB in Croatia in 2026?

OIB stands for osobni identifikacijski broj. It is an 11-digit personal identification number that stays with you across address changes and status updates. The Tax Administration assigns it so foreigners can be identified in legal and official procedures or as taxpayers.

You typically need an OIB to open a Croatian bank account, sign many notarised contracts, register a company, set up some utilities and phone lines, enrol in state systems, and complete residence files: Open a bank account and Apply for a residence permit. Children named on school, healthcare, or property paperwork often need one too.

For most foreigners who are not obtaining the number purely through a Ministry of the Interior residence registration path, go to a locally competent Tax Administration office in person or via a proxy. Bring a filled application for determination and assignment of OIB and your passport for inspection, plus a copy to leave on file. Official Tax Administration guidance is the checklist to follow when office practice varies by city.

Busy Zagreb or Split counters may print the number the same day; quieter offices may ask you to return or collect by post. EU citizens with e-Citizens credentials may have online assignment options described on the Tax Administration site. From abroad, some movers use a Croatian embassy channel or a notarised power of attorney so a representative can file before arrival.

Write the digits exactly as issued. Mistyped characters create months of cleanup across banks and MUP forms. Keep the one-page confirmation with your passport until you hold a residence card.

Many movers collect OIB early, then finish address registration and banking: Register address. When you are registering residence through MUP pathways, follow the Ministry of the Interior desk instructions for that appointment rather than inventing a parallel process. Digital nomad fee references on MUP pages often use OIB when assigned, or a travel-document number pattern when it is not.

Budget time for a tax-office visit in your first week so rent standing orders and mobile contracts do not stall: Monthly budget.