The hidden fee in every exchange rate, and how to find it
"Zero fees" is the most expensive phrase in money transfers. How to work out what you really pay when you change money, in one minute.
Edgevex explains how things work and what they cost. It is not financial advice. Some links may earn us a commission, which never changes what we recommend. How we make money.
The short version
- The fee you see is often not the main cost. The bigger cost is usually hidden in the exchange rate.
- The real rate is the mid-market rate, the one you see on Google or XE. Anything worse is a markup.
- Sending €2,000 a month with a 3% margin costs about €720 a year. At 0.5%, about €120.
- Compare providers by what actually arrives, not by the fee they advertise.
"Zero fees" is the most expensive phrase in money transfers. Banks and many exchange services can advertise free transfers because they make their money somewhere less visible: the rate.
If you send money abroad, get paid in another currency, or just shop in one, this is the number that decides what you really pay.
The mid-market rate: the real price of money
At any moment, currencies trade between big banks at a price. The midpoint between buying and selling is the mid-market rate. It is the rate you see when you search "EUR to USD" on Google, XE or Reuters.
Very few providers give you that rate. Most give you a slightly worse one and keep the difference. That difference is the margin, also called the markup or spread.
How to work out your margin
You only need two numbers: the mid-market rate and the rate you are offered.
Margin = (mid-market rate − your rate) ÷ mid-market rate × 100
Example: the mid-market rate is 1.100 dollars per euro. Your bank offers 1.067. That is (1.100 − 1.067) ÷ 1.100 = 3% margin.
Do this once for each provider you use. It takes a minute, and you will know exactly what you are paying, fee or no fee.
What different margins cost you
Here is what happens on €2,000 converted every month, say a salary, rent payment or money sent home.
| Margin | Each transfer | Per year | Over 5 years |
|---|---|---|---|
| 0.5% | €10 | €120 | €600 |
| 1% | €20 | €240 | €1,200 |
| 3% | €60 | €720 | €3,600 |
| 5% | €100 | €1,200 | €6,000 |
Margins of around 2% to 4% are common at traditional banks, and airport exchange desks can be far higher. Specialist transfer services and some money apps often come in well under 1%. The difference between the two, on a regular transfer, can be a holiday every year.
Try it: Exchange fee checkThe hidden cost in your exchange rate, in a year's terms.How to compare providers properly
- Pick a real amount and a real currency pair. Costs change with both.
- Ask each provider: how much will arrive? Most show this before you confirm. That single number includes the fee and the margin.
- Compare at the same moment. Rates move all day. Check side by side, within a few minutes.
- Check the receiving end. Some international transfers lose money on the way in to intermediary or receiving bank fees. Ask whether the recipient gets the full amount.
- Watch weekends. Some providers add an extra markup when markets are closed. If it can wait until Monday, it may be cheaper.
Where else margins hide
- Card payments abroad. Your card network converts at its rate, then your bank may add a foreign transaction fee on top, often 1% to 3%.
- Card machines that offer your home currency. That is dynamic currency conversion, and it is usually the worst rate of all.
- Getting paid from abroad. If a client or employer pays you in another currency, your bank converts it when it arrives, often with a margin. A multi-currency account can let you hold the money and convert when and where you choose.
- Cash exchange counters. "0% commission" signs almost always mean a wide margin instead.
Do not ask what the fee is. Ask how much arrives.
Keep reading: see the margin in action in the cheapest way to send money from Europe to South Africa.
The bottom line
The exchange rate is a price, and like any price, it varies a lot between sellers. Learn the mid-market rate, work out your margin once, and compare by what actually arrives. For anyone moving money across currencies regularly, this is one of the easiest ways to save hundreds a year with no change in lifestyle at all.