The spread is the fee, and it should be printed like one

Ask most payment providers what they charge and you will get a number that sounds small. A flat fee of a dollar or two, sometimes nothing at all. Then look at the rate you were given and compare it to what the currency pair was trading at that second, and a second, larger charge appears.

That second charge is the spread. It is real money, it usually dwarfs the stated fee, and almost nothing in the interface tells you it happened.

How the spread hides

A conversion has two numbers that matter: the rate the market was at, and the rate you were given. The difference between them, expressed as a percentage, is what the provider took.

The trouble is that the first number is invisible to you at the moment of the transaction. By the time you think to check, the market has moved, and any comparison you make is against a different moment. This is not an accident of interface design. A margin that cannot be checked is a margin that cannot be negotiated.

Working out what you actually paid

Take the amount that left your account and the amount that arrived, and divide one by the other. That gives you your effective rate, inclusive of everything.

Then find the mid-market rate for that pair at the timestamp of the conversion. Any reputable market data source will give you this. The gap between your effective rate and the mid-market rate, divided by the mid-market rate, is your true cost as a percentage.

Do this for a month of conversions and add the stated fees on top. For most businesses moving money across borders regularly, the spread turns out to be somewhere between three and ten times the visible fee.

What we do instead

Every Syntra quote shows three things: the mid-market rate we sourced, our margin as its own figure, and the payout fee. You can see all three before you approve anything, and all three appear on the statement afterwards.

This is not generosity. It is the only arrangement under which a customer can hold us to a price. A margin you can see is a margin you can compare, argue about, and negotiate down at volume. That is how pricing is supposed to work.

What to ask your current provider

Ask them for the mid-market rate they sourced on a specific past conversion, and the margin they applied to it. Ask for it as two numbers rather than one.

A provider who cannot or will not answer that question is telling you something useful about how they make their money.