Money and Payments in Bosnia-Herzegovina: The Convertible Mark Explained

Two currencies, one country, and where visitors get confused

Every visitor to Mostar eventually asks the same question: euros or something else? The short answer is something else. Bosnia-Herzegovina has its own currency, the convertible mark, and while euros are widely tolerated in tourist businesses, they are not the currency the country actually runs on. Understanding this before you arrive saves a surprising amount of friction at the till, at the parking barrier, and at the counter of every ottoman house and mosque you visit in the old town.

This page is deliberately narrow. It explains what the convertible mark is, how its exchange rate works, and how to think about cash versus card during your stay. It does not repeat the specific entry prices for the mosque, the tekija at Blagaj, or the waterfalls at Kravice — those figures live on their own pages, since they shift with the season and the source.

If you are trying to work out an overall daily budget, that calculation belongs on Mostar Budget. If you are wondering how much to leave a guide or a waiter, that is covered separately on Tipping in Bosnia and Herzegovina. What belongs here is the currency itself: what it is called, what it is worth, and how not to get tangled between two monetary systems in the same transaction.

What the convertible mark actually is

The official currency of Bosnia-Herzegovina is the convertible mark, abbreviated KM locally (from the Bosnian “konvertibilna marka”) and BAM under its international ISO code. You will see both abbreviations used interchangeably on price tags, receipts, and ATM screens, and they refer to the same currency. There is no other legal tender in the country, and no regional currency variant to worry about between Mostar, Sarajevo, or anywhere else in Bosnia-Herzegovina.

The name “convertible” is not decorative. It refers to the currency’s origin: the mark was introduced after the war of 1992-1995 under a currency board arrangement, deliberately designed to be fully backed and freely convertible against a reference currency. That reference was originally the German mark, and when Germany adopted the euro, the peg carried over automatically. The result is a currency that has been anchored to a single external benchmark, without interruption, since its creation.

Banknotes come in denominations of 10, 20, 50, and 100 KM, with smaller notes for 5 KM, and coins for amounts under one mark (100 fening equal 1 KM, in the same way 100 cents equal 1 euro). Prices for everyday items — a coffee, a bus ticket, a portion of cevapi — are almost always written in KM, sometimes with a euro equivalent added underneath for the benefit of visitors, particularly in Mostar’s old town and around heavily touristed sites.

The fixed peg: why 1.95583 is the only number that matters

The single most useful fact on this page is this: 1 euro equals 1.95583 KM, and that rate does not change. It has not moved since the currency board arrangement was put in place in 1997, and it is not subject to the daily fluctuations you would expect from a floating exchange rate. There is no need to check a live rate before your trip, no need to time your exchange for a “good day,” and no reason to be quoted a different figure by a legitimate exchange office or bank.

This matters practically in two ways. First, any business, exchange office, or online source quoting you a materially different rate — noticeably better or worse than 1.95583 — is either using an outdated figure, applying a hidden margin, or making a mistake, and it is worth double-checking before you hand over cash. Second, because the rate is fixed, converting prices in your head becomes a matter of simple, repeatable arithmetic rather than a moving target: roughly, divide a KM price by two to get a rough euro figure, and the small remainder (that extra 0.02 per euro) is negligible for everyday spending, though it adds up if you are converting a large sum for an extended stay.

For context, KM is also informally pegged in practice to a stable relationship with other currencies through the euro, but there is no reason to think in anything other than euros when mentally converting: the mark was built around that single anchor, and it is the only conversion worth memorizing for a trip to Herzegovina.

Paying in euros: what actually happens at the till

It is genuinely common, especially around Stari Most and the old bazaar of Kujundziluk, for shopkeepers, guesthouse owners, and tour operators to accept euro cash directly. Menus at restaurants catering heavily to day-trippers sometimes list prices in both currencies, and some private transfer drivers and tour guides will quote and accept payment in euros as a matter of course, particularly for visitors arriving from Croatia or Montenegro who may not have had a chance to obtain KM yet.

The detail worth remembering is what happens next: the change you receive back is almost always in KM, not in euros. A business will happily take a 20-euro note for a 15-KM item, but it will hand you back marks, not a mix of euro coins and marks. Over the course of a day this means euro-only travellers gradually accumulate a growing pile of KM regardless of their intentions, which is one more reason it makes little sense to avoid the local currency altogether. If your goal is to minimise the number of currencies you are juggling, it is more efficient to obtain some KM early in your stay than to try to pay exclusively in euros and end up with an unplanned mixed wallet by the second day.

A smaller, related trap: because some prices are advertised in euros for the convenience of visitors, it is easy to lose track of which currency a given number refers to, especially when a menu, a parking sign, or a small handwritten placard omits the currency symbol. When in doubt, ask directly which currency is meant — “KM or euro?” is a completely normal question to ask in Mostar, and staff at almost any tourist-facing counter are used to it.

Cash or card: what you will actually need

Card acceptance in Mostar has expanded steadily, and by 2026 most hotels, larger restaurants, supermarkets, and established tour operators will take a card without hesitation. That said, a cash-free trip through Herzegovina is not realistic, and travellers who arrive assuming otherwise tend to run into trouble at exactly the moments that matter most.

Cash-only situations you should expect include small entry tickets at historic houses and religious sites, parking attendants at car parks near Kravice or Blagaj — including on an organized Kravice waterfalls and Blagaj day trip where the driver may still expect a small cash parking fee — market stalls in Kujundziluk, most local taxis, small family-run konobas outside the main tourist strip, and rural attractions in general.

A number of these sites also charge for parking as a separate ticket from the entry fee, which means you can face two small cash transactions at the same stop rather than one — worth keeping a stock of smaller notes and coins for exactly this reason, since attendants at these smaller stops are not always able to break a large note.

The practical approach is a hybrid one: keep a card for hotels, larger restaurants, fuel, and car rental, and carry enough KM in small denominations to cover tickets, parking, taxis, and market purchases. If you are renting a car and driving between destinations, or working out where to park in Mostar itself, assume cash will be needed at some point along the way, even if your main expenses are cashless.

Getting convertible marks: ATMs, exchange offices, and what to avoid

ATMs are the simplest and generally most cost-effective way to obtain KM, and they are widely available in central Mostar, at the airport, and in every other town covered on this site, from Trebinje to Konjic — worth remembering if your itinerary includes a guided tour taking in Mostar, Konjic, and the Blagaj tekke and you want small notes ready for stops along the way. They dispense marks directly, apply an interbank-linked rate close to the fixed peg, and the only cost to weigh is your own card’s foreign transaction fee, which is worth checking before you travel rather than discovering at the machine.

Exchange offices, locally called mjenjacnica, are common throughout the old town and offer a straightforward alternative, particularly useful if you are converting a larger sum of euro cash in one go rather than making several ATM withdrawals.

Rates at legitimate exchange offices track the fixed peg closely; a posted rate that diverges noticeably from 1.95583 KM per euro is a signal to walk on and compare elsewhere, since a handful of outlets in heavily touristed streets build in a wider margin than the peg would justify. Hotel reception desks can also exchange small amounts as a convenience, but typically at a less favourable rate than a dedicated exchange office or an ATM, and are best used only for a top-up rather than your main supply of cash.

There is little practical benefit to sourcing KM before you leave home. Because the currency is pegged rather than floating, there is no exchange-rate timing advantage to buying in advance, and marks are a niche currency at most exchange counters outside the region, meaning you would likely pay a wider margin doing it that way than simply withdrawing after arrival.

Crossing borders with leftover currency

Bosnia-Herzegovina’s neighbours use different currencies again: Croatia has been on the euro since 2023, and Montenegro also uses the euro despite not being an EU member. That means a common itinerary — arriving from Dubrovnik or Split, or continuing on toward Kotor — involves genuinely crossing into and out of a country with its own separate currency, not simply moving between regions that happen to share a name for their money.

KM is not a currency you will find much use for, or much of a market to exchange, once you have left Bosnia-Herzegovina and its immediate neighbours. Practically, this means spending down your remaining marks before you cross a border, or converting any meaningful leftover sum back to euros at a bank or exchange office before you go, rather than assuming you can quietly use them on the other side or exchange them easily once home. This is a small thing to plan for, but it is one of the more common minor regrets travellers report after a Herzegovina trip that continues on toward the Adriatic coast — a stray fold of marks with nowhere left to spend them.

A short note on prices you will see elsewhere on this site

Prices for specific attractions, park entries, museum tickets, and similar fees are intentionally not repeated here. Costs like these vary with the season, are sometimes revised without much notice, and are covered in more useful detail on the page for each individual site — for example the practicalities of visiting Kravice, or the separate parking and entry tickets at Blagaj’s tekija and the Koski Mehmed-Pasa mosque.

What is worth remembering from this page is simply the frame those prices sit inside: figures quoted in KM, a fixed and reliable conversion to euros, and the expectation that whatever currency you hand over, your change will most likely come back as convertible marks.

For a broader sense of what a typical day might cost once accommodation, food, transport, and a few attractions are added up, the dedicated budget guide walks through that calculation in full, and pairs well with the practicalities covered on where to stay in Mostar and how many days to plan for your visit.

If you are also weighing up a data plan for checking rates or maps on arrival, that is handled separately on the SIM card and connectivity guide, and if you want a sense of the more common small scams and overcharging tricks to watch for while handling cash in tourist areas, see scams and tourist traps in Mostar. Travellers building a longer, cost-conscious route through the region may also find the Herzegovina on a budget itinerary useful for sequencing costs across several days rather than one.

Money and currency, questions travellers actually ask

What is the exact euro to convertible mark exchange rate?

It is fixed and has not changed since 1997: 1 euro equals 1.95583 KM. This is a currency board peg, not a floating market rate, so there is no daily fluctuation to check before you travel.

Can I pay in euros in Mostar?

Many tourist-facing businesses in Mostar’s old town, along with some tour operators and hotels, will accept euro cash. The change you receive back, however, is almost always in KM, so you will end up holding local currency regardless.

Do I need cash in Bosnia-Herzegovina, or can I rely on cards?

Cards work in most hotels, larger restaurants, and supermarkets, but small entry tickets, parking attendants, market stalls, local taxis, and rural sites often take cash only. Carrying some KM is a practical necessity, not a backup plan.

Where is the best place to get convertible marks?

ATMs in Mostar and other town centres give a fair interbank-linked rate and are the simplest option. Exchange offices (mjenjacnica) are also common and straightforward; hotel exchange desks tend to offer the least favourable terms.

Is it better to exchange euros before arriving or after?

There is little reason to pre-buy KM at home, since the fixed peg means the underlying rate never moves in your favour or against it. Withdrawing from a Bosnian ATM or exchanging on arrival works just as well, once you have accounted for fees.

Will my leftover convertible marks be useless once I leave Bosnia-Herzegovina?

KM is not widely exchangeable outside Bosnia-Herzegovina and neighbouring countries, so it is worth spending down your cash before crossing into Croatia or Montenegro, or exchanging the remainder rather than carrying it home.

Are prices in Mostar quoted in KM or in euros?

Most menus, tickets, and price tags are quoted in KM. Some tourist businesses show both, and a few quote only euros, but the underlying currency of the country is always KM, and that is what will end up in your pocket.