Key takeaways
- The FX margin is the gap between your rate and the mid-market rate.
- Big-bank posted rates on 27 Oct 2026 were about 3.1% above the market rate for buying USD.
- Specialists such as Wise and Venn charge under 0.5% for CAD conversions.
- Check your margin by comparing your rate with the Bank of Canada daily rate.
What an FX margin is
Every currency pair has a mid-market rate: the midpoint between what buyers pay and sellers receive in the wholesale market. When you convert money, your provider gives you a rate a little worse than that and keeps the difference. That difference is the FX margin.
Because the margin is inside the rate, it doesn’t show up as a fee on your statement. That’s why many businesses don’t realise how much currency conversion costs them each year.
What it costs on a real payment
On 27 October 2026, the Bank of Canada’s USD/CAD rate was 1.4038. National Bank’s posted rate to buy US dollars that day was 1.4475, about 3.1% higher. Here’s what that means for a US$50,000 payment:
| Paying US$50,000 | Cost in CAD | Above market |
|---|---|---|
| At the mid-market rate (1.4038) | C$70,190 | — |
| Big-bank posted rate (1.4475) | C$72,375 | +C$2,185 |
| Wise (0.48% fee) | C$70,527 | +C$337 |
| Venn Essentials (0.45%) | C$70,506 | +C$316 |
Bank posted rates apply to smaller amounts; businesses can often negotiate better rates on larger volumes. Specialist costs use their published conversion fees.
How to check your own margin
- Find a recent conversion on your bank statement and note the rate and date.
- Look up the Bank of Canada daily rate for the same date.
- Divide your rate by the Bank of Canada rate and subtract 1. The result is your margin as a percentage.
Multiply that percentage by your yearly foreign-currency spend to see what conversions cost you each year.
How to pay less
- Use a specialist for regular payments. Published margins under 0.5% are common.
- Hold foreign currency. Paying USD costs from a USD balance avoids converting twice.
- Negotiate with your bank. Ask for your margin in writing for your typical payment size.
- Plan ahead for large payments. A forward contract can lock a rate when you know a payment is coming.
Providers that can help
Mid-market rate, fees from 0.48%
Conversion from 0.45%, CAD, USD, GBP and EUR accounts
Forwards and options for planned payments
FAQs
What is an FX margin?
It’s the difference between the exchange rate you get and the mid-market rate, the midpoint between buy and sell prices in the wholesale market. Banks and many providers earn most of their FX revenue this way rather than through a separate fee.
How much do Canadian banks charge on currency exchange?
Posted rates at big banks are often around 2–3% or more away from the mid-market rate for smaller amounts. Business clients can negotiate better rates on larger volumes, so ask your bank for its margin on your typical payment size.
How do I see my bank’s FX margin?
Compare the rate on your statement with the Bank of Canada daily rate (or another mid-market rate) for the same day. The percentage difference is your margin.
Are specialist FX providers cheaper than banks?
Often, especially for regular payments. Wise converts at the mid-market rate with fees from 0.48% for CAD, and Venn’s conversion fee starts at 0.45%. Compare live quotes for your payment size.
Sources: Bank of Canada daily exchange rates; National Bank posted exchange rates, 27 Oct 2026; Wise and Venn published pricing.