What is the mid-market exchange rate?

The mid-market rate is the real exchange rate that banks and institutions use to trade currencies between themselves. This is the fair rate before any markup is applied.

How much do Canadian banks mark up on foreign exchange?

Canadian banks like RBC, TD, BMO, Scotiabank, and CIBC typically add 2–3% markup on top of the mid-market rate. They don't disclose this — they just show you 'their rate' as if it's the market price.

What are the hidden fees on international wire transfers?

On top of FX markups, banks charge $25–$50 per wire transfer for sending, and the receiving bank often takes a cut too. Combined with the FX markup, a single $13,520 conversion can cost $393 in hidden fees.

How much can hidden bank FX fees cost a business annually?

For a business doing 10 FX transactions per month at $13,520 average, hidden fees can total nearly $47,160 per year — the equivalent of a full-time employee's salary.

Mid-Market Rate vs Bank Rate: Understanding the FX Spread

Every time your business converts currency, two exchange rates exist simultaneously. There's the mid-market rate — the real rate — and there's the bank rate — the rate you actually get. The gap between them is called the spread, and it's the single biggest cost of foreign exchange for Canadian businesses.

Understanding this spread is the key to knowing whether you're getting a fair deal or getting quietly overcharged. Let's break it down.

What Is the Mid-Market Rate?

The mid-market rate (also called the interbank rate or the "real" exchange rate) is the midpoint between the buy and sell prices for a currency pair on global foreign exchange markets.

It's the rate you see when you Google "USD to CAD." It's the rate shown on XE.com, Bloomberg, and Reuters. It's the rate that banks, hedge funds, and large institutions use when they trade currencies with each other.

Crucially, the mid-market rate is what your currency is actually worth at any given moment. It's determined by supply and demand in a $7.5 trillion daily market — the largest financial market on Earth.

What Is the Bank Rate?

The bank rate is the exchange rate your bank offers you. It's different from the mid-market rate because the bank adds a markup — the spread — which is how they profit from the conversion.

When you convert CAD to USD, your bank buys USD at something close to the mid-market rate and sells it to you at a worse rate. The difference is their revenue.

Here's the key insight: most banks don't disclose the spread. They simply quote you "their rate" and let you assume it's the market rate (or close to it). There's no line item showing the markup. No fee disclosure. Just a rate that happens to be 1.5% to 3% worse than the real one.

For a deep dive into how this works at specific institutions, see our analyses of RBC's FX charges and TD's FX fees.

How Big Is the Spread at Canadian Banks?

The spread varies by bank, account type, currency pair, and transaction size. But for typical Canadian business banking clients converting USD/CAD, here's what to expect:

| Provider Type | Typical Spread | On $100K Conversion | |---|---|---| | Big Five banks (retail rate) | 2.0% – 3.0% | $2,000 – $3,000 | | Big Five banks (commercial rate) | 1.0% – 2.0% | $1,000 – $2,000 | | FX specialists / fintechs | 0.2% – 0.7% | $200 – $700 | | Interbank (mid-market) | 0% (benchmark) | $0 |

That 2%+ spread at a Big Five bank may sound small, but it compounds quickly. A business converting $50,000 per month pays $12,000 to $18,000 per year in hidden FX costs at retail bank rates. The same volume through an FX specialist would cost $1,200 to $4,200.

For a detailed comparison of BMO, Scotiabank, and CIBC, check our bank-by-bank FX comparison.

Why the Spread Is Invisible

Banks have a strong financial incentive to keep the spread invisible. Here's why:

No disclosure requirement. Canadian regulations don't require banks to show the FX markup separately. As long as they quote a rate, that rate is the rate. There's no obligation to show the mid-market rate alongside it.

The "no fee" framing. Many banks advertise that their FX service has "no fees." This is technically true — there's no separate fee. But the markup is the fee. It's just embedded in the rate rather than broken out as a line item.

Rate opacity. Banks update their posted rates once or twice a day. The actual mid-market rate moves constantly. This time lag creates additional hidden margin that's difficult for customers to detect.

Bundled relationships. FX is cross-subsidized with other banking products. Your bank may offer you a "great rate" on your business loan while quietly recouping margin on your FX conversions.

We covered the economics of this in detail in our piece on how banks make billions from foreign exchange.

How to Calculate Your Actual Spread

You can figure out exactly what you're paying with a simple formula:

Spread (%) = |Bank Rate - Mid-Market Rate| / Mid-Market Rate × 100

Example:

Mid-market USD/CAD rate: 1.3600
Your bank's rate: 1.3340 (when buying USD)
Spread: (1.3600 - 1.3340) / 1.3600 × 100 = 1.91%

To do this for your own transactions:

Find a currency conversion on your bank statement
Note the date and the rate you received
Look up the mid-market rate for that date and currency pair on XE.com
Apply the formula above

Do this for 5–10 transactions and you'll have a clear picture of your bank's typical markup.

Or skip the math entirely: Loop's free FX audit tool does this automatically. Upload your bank statements and see your exact spread across every conversion.

The Spread Isn't Fixed

One important nuance: the spread isn't constant. It can vary based on:

Transaction size. Larger conversions sometimes get tighter spreads (but not always — you have to ask).
Currency pair. USD/CAD spreads are the tightest. Exotic pairs like CAD/MXN or CAD/INR carry much wider spreads, sometimes 4–5%.
Channel. Online conversions may use a different rate than branch or phone conversions.
Time of day. Posted rates may lag the market, creating wider effective spreads during volatile periods.
Your relationship. Commercial banking clients with negotiated rates get better spreads than retail customers.

What a Fair Spread Looks Like

For USD/CAD business conversions, a fair spread is 0.2% to 0.5%. That's what FX specialists, fintechs, and competitive brokers charge. It covers their operating costs and a reasonable profit margin.

Anything above 1% for a business client is excessive. Anything above 2% — which is the norm at Big Five retail rates — is a significant and unnecessary cost.

For alternatives that offer fairer spreads, see our guide to the best FX options for Canadian businesses in 2026.

The Bottom Line

The mid-market rate is the truth. The bank rate is the truth plus a hidden tax. The spread between them is real money leaving your business on every single conversion.

Most Canadian businesses have never calculated their actual spread. Once they do, the math makes the next step obvious.

Find out your real FX spread → Free audit