Many Croatian road trips cross a border, sometimes without planning to: the old coast road to Dubrovnik passes through Bosnia and Herzegovina at Neum, although the Pelješac Bridge now offers a route that stays in Croatia.
- Your rental contract decides where you may drive, so declare every country at the desk.
- Under the green card system, a Croatian plate is accepted as proof of insurance in Bosnia and Herzegovina and Montenegro.
- Winter tyres are required in Croatia from 15 November to 15 April, with chains in the boot.
Croatia's coast is made for a road trip: Split, the islands, Makarska and, at the end of the road, Dubrovnik. What many visitors only find out on the way is that the old coast road to Dubrovnik leaves the EU for a short stretch, through Bosnia and Herzegovina at Neum. Since the Pelješac Bridge opened in 2022, you can bypass Neum and stay in Croatia, but some navigation apps still choose the old road. With a rental car, every border, even a short one, is a question for your contract. Here is how to plan a Croatian trip that crosses borders, with no surprises at the desk or on the bill.
The borders you may cross
| Trip | Border | What to check |
|---|---|---|
| Split to Dubrovnik on the old coast road | Bosnia and Herzegovina, at Neum | Whether the contract allows it, or take the Pelješac Bridge |
| Dubrovnik to Kotor | Montenegro | Allowed country, cross-border fee |
| Zagreb or Istria to Ljubljana or Lake Bled | Slovenia (EU) | Usually allowed; Slovenian motorway vignette |
| Day trip to Mostar or Sarajevo | Bosnia and Herzegovina | Allowed country, fee, papers |
Since Croatia joined the Schengen area in 2023, there are no routine border checks with Slovenia and Hungary. Bosnia and Herzegovina and Montenegro are outside the EU, with border controls.
Check the contract before you book
Your Europe advises telling the rental company in advance about cross-border trips. Rental companies set their own rules: some allow Bosnia and Herzegovina and Montenegro as standard, others ask for a fee or exclude certain car classes. Read the cross-border section of the terms, or email the company before you book. See driving a rental car to another country.
Declare every country at the desk
At pick-up, name every country on your route, including Neum. Ask the desk to note the countries on the contract and to give you any document needed. A verbal "no problem" does not change a written contract.
Insurance at the border: the green card
The green card system makes sure third-party liability insurance is recognised across borders. The UK Motor Insurers' Bureau explains that within the area of free circulation, which includes the EEA plus Bosnia and Herzegovina, Montenegro, Serbia, Switzerland and Andorra, the number plate counts as proof of insurance.
The Insurance Bureau of Bosnia and Herzegovina confirms that it accepts the plates of cars from 38 countries, including Croatia, as proof of insurance. For cars from a few other countries, a green card or border insurance is needed. With a Croatian rental car, that usually means no extra papers for insurance, but the rental company's permission is still required.
Your damage waiver outside the EU
Third-party liability is one thing; your collision damage waiver and theft protection are another. They are the rental company's terms and often apply only in allowed countries. In an excluded country, you could be liable for the full value of the car if it is damaged or stolen. Our explainer on CDW, excess and super cover shows how the layers fit together.
Tolls and vignettes
Croatian motorways have toll booths; you pay per section. Slovenia uses an electronic vignette for motorways, and a car rented in Croatia will not have one. Our guide on tolls and vignettes in Europe covers how vignettes work.
Winter in Croatia
ECC France lists winter equipment as required in Croatia from 15 November to 15 April: winter or M+S tyres, plus chains in the boot. That matters for inland routes and mountain passes, such as between Zagreb and the coast. Ask whether your rental car is equipped. See our post on a rental car for your ski trip.
At return
Photograph and film the car at return, including the wheels and the underbody edges, because gravel parking and narrow coastal roads are common sources of scrapes. Use the pickup photo checklist for the angles. If a cross-border fee appears on the bill that you were not told about, ask where it was in the terms, and object in writing if it was not there.
A short example
You rent a car in Split for a week and plan to visit Dubrovnik and Kotor. The terms list Bosnia and Herzegovina and Montenegro as allowed with a 40 euro cross-border fee. At the desk, you name both countries, pay the fee and check that they appear on the contract. At Neum and at the Montenegrin border, the Croatian plate is accepted as proof of insurance, and you show the contract when asked whether the car may leave Croatia.
Frequently asked questions
Do I need permission to drive through Neum?
The Neum stretch is in Bosnia and Herzegovina, so it is a border crossing. You can avoid it via the Pelješac Bridge. Rental contracts handle it differently: some allow it as standard, others ask you to declare it or charge a fee. Ask at the desk and get it on the contract.
Do I need a green card for Bosnia and Herzegovina with a Croatian car?
According to the Insurance Bureau of Bosnia and Herzegovina, the plate of a car registered in Croatia is accepted as proof of insurance. A green card is needed for cars from some other countries.
What happens if I enter a country my contract does not allow?
Your damage waiver and theft cover may not apply there, and the company may charge a penalty. In case of theft or damage, you could be liable for the full amount.