Currency Exchange Fees: Where the Money Actually Goes

Every exchange costs money, and most of it is not on the receipt. The advertised fee is the small part. The big part is the spread: the gap between the rate you are given and the mid-market rate that banks use between themselves.

I am not a travel writer and I have no airport horror story. What I have is a habit: before I accept any rate, I look up the mid-market rate in the Currency Converter and work out the markup in percent. This post explains where the costs hide, how the common options compare, and the two rules that avoid most of the damage.

Measure the markup first, then compare fees

The mid-market rate is the midpoint between what banks buy and sell a currency for on the interbank market. Google shows it. The Currency Converter uses the European Central Bank reference rates through the Frankfurter API, published once per working day, which is close enough to measure any retail offer against.

The arithmetic, for a rate quoted as foreign currency per euro:

` markup % = (mid-market rate - offered rate) / mid-market rate x 100 `

Say the mid-market rate is 1.08 US dollars per euro and a counter offers 1.02. That is (1.08 - 1.02) / 1.08, so 5.6 percent, before any fixed fee they add on top. The Percentage Calculator does this on a phone while you stand at the counter.

Judge every option on total cost: spread plus fees, as a percentage of the amount. A sign that says zero commission tells you nothing about the spread, and the spread is where the money goes.

The usual options, cheapest first

The numbers below are typical ranges, not quotes. Fee schedules change and differ per country, so check the one that applies to you before relying on it.

Wise. Mid-market rate plus a fee that is shown before you confirm, usually well under one percent on major pairs. Works as a transfer service, a multi-currency account and a debit card. The transparency is the point: you can see the total cost before you commit.

Revolut. Interbank rate on weekdays within a monthly allowance that depends on your plan. Above the allowance, and at weekends on the cheaper plans, a markup applies. The exact percentages and limits change often, so read the fee page for your country.

A credit or debit card with no foreign transaction fee. The card networks convert at a rate close to mid-market. Whether your card adds a fee on top is in its terms: many charge one to three percent, some charge nothing. Read the terms once; it is the single most useful fact to know before a trip.

A regular European bank card outside the euro area. Typically a one to three percent currency surcharge on payments, plus a fixed fee per ATM withdrawal. Fine for occasional use, expensive as the default.

A bank branch or a bureau de change in town. Spreads of several percent, sometimes with a fixed fee on top.

Airport and hotel counters. The worst by a distance. Spreads of ten percent or more are common. If you need cash on arrival, an ATM in the arrivals hall with a fee-free card beats every counter in the building.

Where the hidden costs sit

Dynamic currency conversion (DCC). A terminal or ATM abroad offers to charge you in your home currency. Say no, every time. The conversion is done by the terminal's provider at a rate they set, and the markup is typically several percent on top of what your own card would have charged. Pick the local currency. On an ATM the wording is often 'with conversion' or 'without conversion'; you want without.

Two fees on one withdrawal. The ATM operator can charge a fixed fee, and your own bank can add a fixed fee plus a percentage. Withdraw larger amounts less often, within what you are comfortable carrying, and prefer ATMs attached to a bank branch over standalone machines in tourist streets.

Weekend rates. Currency markets close from Friday evening to Sunday evening. Some apps add a markup during that window on their cheaper plans, so an exchange on Saturday costs more than the same exchange on Monday.

Small amounts. A fixed fee of three euros is negligible on 500 euros and six percent on 50. If a service charges a fixed fee, batch your exchanges.

PayPal conversions. PayPal adds a currency conversion fee of around three to four percent when it converts for you. Use PayPal for the buyer protection if you want it, not for the rate. Where the seller allows it, pay in the seller's currency and let your card convert.

The order that avoids most of the damage

My own rule is shorter than any comparison table: local currency, always, and check the rate first. Spelled out, the order looks like this.

1. Pay by card in the local currency wherever a card is accepted, with a card that has no foreign transaction fee. The rate is close to mid-market and there is nothing to carry.
2. Get cash from an ATM with a fee-free card, decline the conversion offer, and withdraw in a few larger amounts rather than many small ones.
3. Move larger sums (a deposit, a purchase abroad, a supplier invoice) through Wise or a similar service, where the fee is shown before you confirm. A card is the wrong instrument for a four-figure transfer.
4. Never exchange at the airport. If the destination runs on cash, take a small amount of local currency from an ATM on arrival and no more.

Two boring things that prevent bad days: tell your bank where you are going so the card is not blocked on first use, and carry a second card from a different issuer. A card that stops working abroad turns every point above into theory.

Business transfers are a different problem

For a company the amounts are bigger, they repeat, and the exchange rate on the day matters for the books.

Invoice currency is the first decision. If you invoice a foreign client in your own currency, the exchange risk is theirs. If you invoice in theirs, you may win the work more easily and you carry the risk until the money lands. Decide per client, not per invoice.

Repeat transfers deserve a transfer service, not a card or a bank counter. Wise Business, OFX and similar services quote the rate and fee up front and get cheaper with volume. Banks will negotiate a better spread on regular large transfers, but only if you ask.

A forward contract locks a rate for a future date. Useful when you know you will need foreign currency in one to three months and cannot afford a bad surprise. You give up any favorable movement in return.

Record the rate on the day of each transaction. Exchange gains and losses land in your accounts either way, and reconstructing rates months later is miserable. Most accounting packages with multi-currency support do this for you once the base currency is set.

FAQ

Should I exchange money before I leave or after I arrive?

After, from an ATM with a fee-free card. Ordering cash from your home bank before departure usually costs more than a local withdrawal, and you carry the cash for the whole trip. The exception is a destination where ATMs are scarce or unreliable; then take a modest amount from home and accept the cost.

Cash or card?

Card, in local currency, wherever it is accepted. Cash for markets, small vendors and tips, and for countries where cards are still the exception. In those countries, withdraw locally rather than exchanging at home.

Does the day I exchange matter?

For holiday money, no. Major pairs move a fraction of a percent on a normal day, which is far less than the difference between a good and a bad exchange method. For a large transfer the timing can matter more than the fee, but guessing the direction of a currency is not something I would build a plan on.

What do I do with leftover foreign cash?

Spend it before you leave, or keep it if you will be back within a year. Changing it back costs a second spread, and the airport buy-back rate is the worst rate you will see on the whole trip.