Wire transfers and FX spreads
When a foreign customer pays you by wire, the flat incoming fee is the cost you see. The FX spread, the gap between the mid-market rate and the rate you are actually given, is the cost you often do not. On larger international payments it can be many times the flat fee.
Key points
- The FX spread is the difference between the mid-market rate and the rate applied to your conversion.
- In a $10,000 USD illustration, a spread from 1.38 to 1.35 costs $300, far more than a typical flat wire fee.
- Intermediary banks on international wires may deduct fees before the money arrives.
- A USD-referenced stablecoin still needs a USD-to-CAD conversion, so the spread question does not go away.
Two costs on every international wire
An incoming international wire usually carries two kinds of cost. The first is a flat fee charged by your bank for receiving the wire, plus any fees deducted by intermediary banks along the way. The second is the conversion cost, if the payment arrives in a foreign currency and is converted to Canadian dollars.
The flat fee appears as a line item. The conversion cost is built into the exchange rate, so it shows up only as a smaller deposit than you might have expected. That is why it is easy to overlook and worth measuring.
How to measure the spread
You need two numbers: the mid-market rate at the time of conversion (the midpoint between buy and sell rates in the wholesale market) and the rate actually applied. Then work through these steps, or let the FX spread calculator do it.
- Note the foreign amount received, for example US$10,000.
- Record the mid-market rate at the time of conversion from a published reference source.
- Find the rate applied on your bank advice or statement.
- Multiply the foreign amount by each rate to get the Canadian-dollar value at mid-market and what you actually received.
- Subtract to get the conversion cost, and divide the rate gap by the mid-market rate to get the spread as a percentage.
- Add the flat incoming fee and any intermediary deductions for the total cost of the payment.
A worked $10,000 USD example
Suppose a US customer wires US$10,000. In this illustration the mid-market rate is 1.38 Canadian dollars per US dollar and the rate applied is 1.35. These rates are assumptions chosen for the example, not current exchange rates.
At mid-market, the payment would be worth $13,800. At the applied rate you receive $13,500. The spread is about 2.17%, or $300. Add an assumed $17.50 incoming wire fee and the total cost is $317.50, leaving $13,482.50 in your account.
| Payment | Applied rate | Spread | Conversion cost | CAD received |
|---|---|---|---|---|
| US$10,000 | 1.36 | 1.45% | $200 | $13,600 |
| US$10,000 | 1.35 | 2.17% | $300 | $13,500 |
| US$25,000 | 1.35 | 2.17% | $750 | $33,750 |
On the US$10,000 payment at 1.35, the conversion cost is about 17 times the assumed $17.50 flat fee. A small change in the applied rate moves the total far more than a change in the wire fee.
Intermediary deductions and other surprises
International wires can pass through one or more intermediary or correspondent banks before reaching yours. Each may deduct a fee from the amount in transit, so the sum that arrives can be smaller than the sum sent, before any conversion.
A few practical habits reduce surprises:
- Agree in your invoice terms who bears sending, intermediary and receiving charges.
- Ask your bank whether foreign-currency wires are converted automatically or can be held in a foreign-currency account.
- Compare the deposit with the invoice amount and record any shortfall separately from the FX cost.
- Keep the bank advice showing the rate applied; you need it for bookkeeping and for any later dispute about the amount received.
Comparing wires with cards and stablecoins
For one cross-border payment worth $5,000 that has to be converted to Canadian dollars, the site's default assumptions give these costs: card about $255.30 (2.6% + $0.30 plus a 2.5% FX cost), wire about $117.50 (a $17.50 fee plus a 2% spread), and a USD stablecoin received in a self-hosted wallet about $75.05 (a 1% conversion, a 0.5% off-ramp and a $0.05 network fee). These defaults are illustrative, not market data.
On the same assumptions, a cross-border wire costs less than a card once a payment exceeds about $554.84; below that, the flat fee makes the wire relatively expensive. The stablecoin and wire lines never cross under these defaults because the stablecoin is assumed cheaper at every size, which says more about the assumptions than about any real provider.
Remember that a USD-referenced stablecoin does not remove the conversion: a Canadian-dollar business still converts every payment. The question becomes what spread and off-ramp cost you pay to convert. See what a stablecoin is and cross-border payments from Canada.
Timing and working capital
Wires are often treated as fast, but international wires can take more than a day once cut-off times, time zones and intermediaries are involved. The default model assumes two business days, which works out to about 2.8 calendar days on average. Money in transit is money you cannot use, and working capital and settlement time shows how to put a cost on that.
If you invoice foreign business clients regularly, the B2B invoicing page walks through rail choices for larger, less frequent payments.
Questions people ask
What is a mid-market exchange rate?
It is the midpoint between the buy and sell rates in the wholesale currency market at a given moment. It is a reference point for measuring spreads, not necessarily a rate you will be offered.
How do I find the FX spread on a wire I received?
Compare the rate on your bank advice with the mid-market rate at the time of conversion. Divide the gap by the mid-market rate to get the spread as a percentage.
Why did I receive less than the invoice amount?
Intermediary banks may have deducted fees in transit, or the sender may have passed their own charges on. Check the bank advice and your invoice terms on who pays which charges.
Does paying in a stablecoin avoid FX costs?
Not for a business that needs Canadian dollars. A USD-referenced stablecoin still has to be converted to CAD, so the conversion rate and off-ramp fees matter.
Sources
Reviewed October 30, 2026. Educational information only; not financial, legal, tax or investment advice. This site does not process payments or hold funds.