Interchange-Plus Pricing for Canadian Merchants: What It Is and When It Saves You Money

What Interchange Actually Is

Every time a Canadian customer pays with a Visa or Mastercard, the card network charges a fee called interchange. This fee goes to the card-issuing bank — not to Visa or Mastercard directly, and not to your payment processor.

Interchange rates in Canada vary significantly by card type. A basic Visa debit costs around 0.00%–0.15%. A premium World Elite Mastercard with travel rewards can cost 1.80%–2.20%. Corporate cards often hit 2.5%+. The card network publishes these rates publicly — they're not secret, just complicated.

When you sign up with Square, Stripe, or PayPal, they charge you one flat rate — say, 2.9% + $0.30 — whether the customer pays with a no-frills Visa debit or a premium metal travel card. The processor pockets the difference between what it actually paid in interchange and what it charged you. On a basic debit card, that difference can be over 2.5%.

How Interchange-Plus Pricing Works

Interchange-plus (sometimes called "cost-plus" or "IC+") passes the actual interchange cost directly to you, then adds a fixed, transparent markup for the processor's margin.

A typical interchange-plus structure looks like this:

With flat-rate pricing, you'd pay 2.9% + $0.30 on that same transaction regardless. On a $100 sale, flat rate costs $3.20. Interchange-plus costs about $2.28. That $0.92 difference sounds small — until you're running $50,000/month through it.

Canadian Interchange Rates: What You're Actually Paying For

Canada has specific interchange rate schedules set by Visa and Mastercard. These are lower than US rates for consumer cards, partly due to Canadian regulatory pressure. Key categories for Canadian merchants:

Notice the debit card gap. Interac debit costs almost nothing in interchange — but under a flat-rate structure, you're paying the same 2.9% as a premium travel card. That's a massive spread that flat-rate processors keep as profit. If your customers frequently pay with debit, interchange-plus can be dramatically cheaper.

Helcim: The Main Interchange-Plus Option for Canadian Merchants

Helcim, based in Calgary, is the primary interchange-plus processor serving Canadian businesses. They're Canadian-owned, have no monthly fee, and publish their markup structure transparently. Their pricing scales down as your volume increases:

No monthly fee. No PCI fee. No statement fee. Helcim makes money purely on the markup above interchange — which aligns their incentive with yours. They want you to process more volume, not to upsell you on add-ons.

Stripe offers interchange-plus pricing through their custom pricing program, but only at higher volumes (typically $50,000+/month) and only if you negotiate directly. Moneris can also do IC+ on negotiated contracts, usually at $100K+/month. For smaller and mid-sized Canadian merchants, Helcim is effectively the only self-serve interchange-plus option.

Real Savings at $50,000/Month in CAD

Let's run a concrete example. A Canadian retailer processing $50,000/month online with a typical card mix: 40% basic credit, 35% Visa Infinite / World Elite, 15% debit, 10% corporate cards.

Blended interchange cost estimate:

• Basic credit (40% × $50K = $20K): ~1.55% avg interchange = $310
• Premium credit (35% × $50K = $17.5K): ~2.00% avg interchange = $350
• Debit (15% × $50K = $7.5K): ~0.10% avg interchange = $7.50
• Corporate (10% × $50K = $5K): ~2.50% avg interchange = $125
• Total interchange: ~$792.50

Under Stripe flat rate (2.9% + $0.30, ~1,000 orders avg $50):

• 2.9% × $50,000 = $1,450
• $0.30 × 1,000 orders = $300
• Total: $1,750/month

Under Helcim interchange-plus (IC + 0.50% + $0.25 at this volume):

• Interchange: ~$792.50
• Assessment fees (~0.10%): ~$50
• Helcim markup: 0.50% × $50,000 = $250 + ($0.25 × 1,000 orders) = $500
• Total: ~$1,292.50/month

Monthly savings with Helcim: ~$457.50. Annual savings: ~$5,490.

At $100,000/month, the annual savings roughly double. At $200,000/month, you're talking about $15,000–$20,000/year staying in your pocket.

When Flat-Rate Pricing Is Actually Better

Interchange-plus isn't always the right choice. Flat rate wins in these situations:

• Very low volume ($0–$5,000/month): The complexity of understanding your statement isn't worth the modest savings. Stripe or Square's simplicity makes sense here.
• Mostly premium cards: If your customers predominantly use high-end travel cards, corporate cards, or Amex, flat rate and interchange-plus converge in cost. You lose less under flat rate when interchange is already high.
• You need features flat-rate processors offer: Stripe's developer ecosystem, Square's free POS hardware ecosystem, Shopify's native checkout — these have real value. If you need them, the pricing model is secondary to the product fit.
• Inconsistent or seasonal volume: If you process $20,000 in December but $1,000 in January, you won't hit the tiers where interchange-plus consistently wins. Flat rate's predictability has value for cash flow planning.

How to Read an Interchange-Plus Statement

Interchange-plus statements are more complex than flat-rate ones — and that's by design on the processor's side. What you'll see:

1. Transaction detail by card type: Each card type settled separately — Visa Debit, Visa Classic, Visa Infinite, Mastercard Standard, World Elite Mastercard, Amex, etc.
2. Interchange fee per category: The actual cost charged by the card network for that category.
3. Assessment and network fees: Visa and Mastercard's cut (~0.08–0.13%) charged on top of interchange.
4. Processor markup: Your processor's fixed margin above cost — this is the only number they control.

The most important thing to scrutinize: is the markup truly fixed and transparent? Some processors advertise "interchange-plus" but bury additional fees in assessment pass-throughs, gateway fees, or batch fees that inflate the real cost above the advertised markup. Helcim is notable for publishing all fees clearly — no hidden lines on the statement.

Interchange-Plus vs. Tiered Pricing

There's a third pricing model Canadian merchants sometimes encounter: tiered pricing (also called "bundled" or "qualified/non-qualified" pricing). This is the worst option for most merchants — avoid it.

Tiered pricing groups cards into 2–4 buckets (Qualified, Mid-Qualified, Non-Qualified) and charges different rates per bucket. The processor decides which card falls into which tier, often pushing premium or corporate cards into the "Non-Qualified" bucket at penalty rates of 3.5%+. It offers the opacity of flat-rate pricing without the simplicity, and you have no visibility into whether your card mix is being classified fairly.

If a processor offers you tiered pricing, ask for interchange-plus instead. If they refuse, that's a red flag.

Who Should Switch to Interchange-Plus

You're a strong candidate for interchange-plus pricing if:

• You're processing more than $15,000–$20,000/month in Canada
• You see significant debit card volume from Canadian customers
• Your average order value is moderate-to-high (premium cards concentrate at higher AOVs)
• You're on a flat-rate processor and haven't compared actual interchange costs in the last year
• You've been told your current processor is "competitive" — but haven't seen the statement math

The easiest way to check: ask Helcim for a free statement analysis. They'll review your current processor statement and show you estimated savings under their pricing. There's no obligation.