Can you take a rental car across a border?

By the Viamo editorial team · Editor Terje Moy · Last updated July 2026 · 6 min read

Yes, in most cases — but only if you tell the rental company before you go, not after. Crossing a border in a hire car without prior authorisation is one of the fastest ways to void your insurance entirely, and the rules differ sharply depending on which countries are involved. Here's a practical run-through of when it's allowed, what it costs, what to carry, and which destinations most companies simply won't permit — essential reading before you finalise any first-time car hire abroad that touches more than one country.

The short answer: it depends on the pair of countries

Within Western Europe, crossing borders in a hire car is routine and almost always permitted by the major international companies (Hertz, Avis, Europcar, Sixt, Budget, Enterprise), usually for a modest fee and with prior notice. Move further east or south, and the picture changes: some destinations are restricted to specific companies or specific cars, and a handful are prohibited outright by nearly every operator, regardless of what you're willing to pay. The only reliable way to know your specific route is permitted is to ask at the time of booking and get it confirmed on the rental agreement — not to assume based on what a similar trip cost a friend.

When it's straightforward

• Within the EU and EEA: Generally permitted by all major companies, usually with advance notice and sometimes a flat administrative fee. This covers the great majority of common cross-border trips — France to Spain, Germany to Austria, Italy to Slovenia.
• Into Switzerland: Widely permitted, usually with a surcharge, because traffic flows both ways commercially and companies are well set up for it.
• UK to mainland Europe via the Tunnel or a ferry: Handled by most major companies with advance notice; you may need extended insurance documentation.

Where it gets restricted

• The Western Balkans (Serbia, North Macedonia, Albania, Bosnia and Herzegovina, Kosovo, Montenegro): some companies prohibit entry outright; others permit specific countries with prior agreement and a higher surcharge, assessed case by case.
• Morocco from a Spanish rental: a small number of companies operating out of Algeciras or Tarifa offer a specific product for the crossing; most simply don't allow it. Don't assume a standard Spanish rental covers the Strait.
• Turkey: rentals from Western Europe are rarely permitted to cross into Turkey; a Turkish rental is usually the only realistic option if you need a car there.

Where it's essentially prohibited

Moldova, Ukraine and Belarus are named as prohibited destinations in the vast majority of Western European rental agreements, irrespective of surcharge or advance notice — this isn't a pricing tier you can pay your way into, it's a flat exclusion in the contract. If your route genuinely requires entering one of these countries, a locally based rental in that country, rather than a cross-border trip, is the only workable option.

What the cross-border fee actually pays for

The fee you're charged for cross-border permission generally covers two separate things, sometimes bundled into one line and sometimes itemised: a flat administrative charge for the authorisation paperwork (commonly in the region of €15–€50), and, for higher-risk destinations, an extended insurance premium reflecting a different risk assessment for that country. The second component is why the fee for crossing into, say, the Western Balkans tends to be noticeably higher than the fee for crossing from France into Germany — it isn't just paperwork, it's a genuinely different insurance product for that leg.

The documents you need

Once authorised, you'll be issued a cross-border authorisation letter — sometimes referred to as a border crossing letter, and known as a VE103 in the UK — naming the vehicle, the driver, the specific countries covered, and the period of validity. Carry this alongside:

• The vehicle registration document provided by the rental company.
• Proof of insurance for the trip.
• Your driving licence and, if required for your destination, an International Driving Permit.
• A Green Card, if the rental company's insurance isn't automatically recognised in your destination country — ask explicitly rather than assuming it's included.

Print the authorisation letter rather than relying on a photo on your phone. Some border posts with active checks — Switzerland, parts of the Western Balkans, the Spain–Morocco crossing — will ask for it in hard copy, and not every official will accept a digital version.

What happens if you don't declare it

Driving across a border without prior authorisation is a breach of the rental agreement in almost every case, and it's treated that way regardless of how far you went or how briefly. A short, unplanned dip into a neighbouring country on the way to somewhere else still counts — the rule is about whether the country was authorised, not about distance or duration. If you have an accident or the car is damaged while in an unauthorised country, the rental company is entitled to charge you the full cost, since the CDW and any excess waiver you paid for typically don't extend to countries outside the agreement — see our guide to car hire insurance explained for how CDW and excess cover actually work.

Booking a route that crosses multiple borders

If your trip touches several countries — a road trip through the Alps taking in France, Switzerland and Italy, for example — name every country at the time of booking, including ones you're only transiting through briefly. Ask specifically whether the CDW and excess waiver extend to each one; insurance terms sometimes vary country by country even within a single authorised list. For the fuller detail on fees, insurance validity and specific country restrictions, see our companion guide on one-way car hire if you're also planning to drop the car somewhere other than where you picked it up, since cross-border and one-way fees stack rather than replace each other.

Frequently asked questions

Can I drive a hire car from France into Spain without telling the rental company?

Technically you might get away with it on a short, uneventful trip, but it's a breach of the rental agreement and voids your cover for the duration you're in Spain. If anything goes wrong — an accident, a breakdown, even a parking dispute — you're exposed to the full cost. Declare it at booking; the fee is usually modest and it takes the risk off the table entirely.

Which countries do rental companies typically refuse to let hire cars enter?

Moldova, Ukraine and Belarus are excluded by nearly every Western European rental company as standard. Several Western Balkan countries are restricted rather than flatly prohibited, varying by company. Always check your specific route rather than assuming based on a similar-sounding destination.

Do I need a different insurance document to cross a border?

Sometimes — a Green Card may be required if the rental company's base insurance isn't automatically recognised in your destination, particularly outside the EU and EEA. Ask the rental company directly whether one is needed and, if so, whether they provide it or you need to arrange it separately.

Does the cross-border fee cover a one-way drop-off in another country too?

No — the cross-border authorisation fee and a one-way drop-off fee are separate charges that stack if you're doing both. Confirm both at booking; combining cross-border travel with a one-way return can be considerably more expensive than either alone.