Changing money looks like an errand without a decision in it — you go somewhere and you change it. Yet on the same amount, the gap between the best and the worst way of doing it routinely runs to several percent.
1. Accepting conversion at the terminal
Pay by card abroad and the terminal will often offer to charge you in your home currency. It sounds like a service. It is a conversion at a rate set by the merchant — dynamic currency conversion — and it is almost always worse than your card's own rate.
Always choose the local currency. This is the most expensive and most easily avoided mistake on the list.
2. Changing money at the airport
Airport exchange counters carry the widest spreads you will ever see. You are paying for the location, not the service. Fine for a small amount on arrival; not fine for anything larger.
3. Comparing the rate and ignoring the fee
A rate that looks better often comes with a one percent commission, which makes it worse than an apparently weaker rate with no commission at all. Always ask for the final amount you receive, not the rate.
4. Changing the whole amount at once
If you are travelling for a while or paying in instalments, changing everything on one day ties the entire sum to that day's rate. Splitting it into two or three does not guarantee a better rate, but it does limit the damage of a bad day.
5. Comparing the wrong direction
The best rate for selling foreign currency is not the best rate for buying it. The bureau with the highest buy rate often has the highest sell rate too.
Decide first which side you are on, then compare — otherwise the ranking is meaningless.
6. Comparing the wrong column
Two rates are displayed in the window, and the more prominent one is almost always the one that does not apply to you. If you are bringing foreign currency, the buy rate applies — the lower of the two. If you are buying foreign currency, the sell rate applies.
Two bureaus cannot be compared until you are reading the same column. Comparing one's buy rate against another's sell rate is not a comparison, it is a muddle.
7. Believing that "no commission" means free
The sign is accurate; the conclusion is not. A bureau's margin sits in the gap between its buy and sell rates, and that gap is already inside the numbers in the window. A commission would be a second charge, levied separately — and that one genuinely usually does not exist.
The real cost only appears when you compare the rate you were given against the published reference rate for that day.
8. Shopping around for a small amount
The difference between the best and worst option in a city rarely exceeds a fraction of a percent. On €100 that is under a euro — less than the bus fare to the better counter.
A rule that saves time: under a couple of hundred, change wherever is nearest. Over a thousand, it is worth two minutes of comparison before you leave the house.
What it adds up to
On €2,000 a two percent difference is €40. That is the sort of number worth five minutes of comparison — and not worth crossing town for.
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Frequently asked questions
How an exchange rate is actually set, what a spread costs on a real transaction, what happens when your income and your debt are in different currencies, and what to check before paying or being paid abroad. They explain mechanisms rather than forecast rates, and each one carries the date it was last revised at the top.
No. We publish no forecasts, price targets or trading calls, and no article recommends buying or selling a currency. Exchange rates over short horizons are close to unpredictable, and a site that pretends otherwise is selling something. What the articles do instead is explain the mechanism, so that you can read the news for yourself.
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