Best Payment Gateway for Shopify Stores in Canada (2026)

Shopify's Third-Party Gateway Tax

This is the elephant in the room. If you use any payment gateway other than Shopify Payments, Shopify charges an additional fee on every transaction:

On the Basic plan, using Helcim instead of Shopify Payments means paying Helcim's processing fee PLUS an extra 2.0% to Shopify. On a $100 order, that's Helcim's ~$2.25 + Shopify's $2.00 = $4.25 total.

Shopify Payments would cost $3.20. The third-party fee kills the savings.

But on the Advanced plan, that extra fee drops to 0.6%. Now the math works differently.

The Real Cost Comparison for Canadian Shopify Stores

Scenario: 100% online, average order $85, standard Canadian card mix.

On the Basic plan, Shopify Payments wins at every volume. The 2.0% third-party fee makes alternatives uncompetitive.

On the Advanced plan, the crossover happens around $40K–$50K/month. Above that, Helcim + the 0.6% fee starts saving money — about $140/month at $100K volume. But you're also paying $537/month for the Advanced plan, so the total Shopify cost is higher.

When Third-Party Gateways Make Sense on Shopify

1. You're on Shopify Plus

At 0.2% third-party fee and $2,800+/month plan cost, you're already paying enterprise money. The extra 0.2% on a $500K month is $1,000 — but Helcim's interchange-plus pricing could save you $3,000–$5,000 on that same volume. Net savings: real money.

2. You also sell in-person

Shopify POS uses Shopify Payments rates: 2.4%–2.7% in-person. If you have a retail location processing $20K+/month in-person, Helcim's interchange-plus (avg ~1.6% in-person) saves substantially.

Interac debit in-person through Helcim costs pennies vs. 2.4%+ through Shopify.

If you run a Shopify online store AND a physical retail location, consider using Shopify Payments for online (avoid the third-party fee) and Helcim for in-person (get interchange-plus and cheap Interac). Two processors is more work, but the savings can be $200–$500/month.

3. You need Interac Online

Shopify Payments supports Interac Online for Canadian customers, which is good. But the processing rate is the same flat rate as credit cards.

Some third-party gateways pass through the lower Interac interchange. If a meaningful percentage of your customers pay with Interac Online, this matters.

4. You sell internationally

Shopify Payments charges 1.5% on international cards plus a 2.0% currency conversion fee. That's 3.5% on top of your base rate. On a $100 USD sale to an American customer, you're paying $6.40–$6.70 total.

Helcim can deposit USD directly into a Canadian USD bank account, avoiding FX conversion entirely. If 30%+ of your sales are international, the FX savings alone can justify a third-party gateway. See our cross-border processing guide.

Shopify Payments: What You Get

Beyond avoiding the third-party fee, Shopify Payments has genuine benefits:

• Zero setup friction. Toggle it on in settings. No separate application, no underwriting wait.
• Unified dashboard. Orders, payments, chargebacks, payouts — all in Shopify admin. No logging into a separate processor dashboard.
• Shop Pay. Shopify's accelerated checkout. Customers save their info and check out with one click. Conversion rate boost is measurable — Shopify claims 1.72x higher conversion vs. regular checkout.
• Fraud analysis. Built-in fraud indicators on every order. Not perfect, but better than nothing.
• Chargeback handling. Shopify manages the chargeback response process. You submit evidence through their dashboard.

The downside: Shopify Payments is Stripe under the hood. If Stripe's risk algorithms flag your business, your Shopify Payments account gets frozen too.

High-risk industries (CBD, supplements, firearms accessories) often get shut down with little warning. See our high-risk processing guide.

Other Third-Party Gateways on Shopify

Stripe (Direct)

Using Stripe directly on Shopify means paying Stripe's 2.9% + $0.30 PLUS Shopify's third-party fee. This is almost always more expensive than Shopify Payments, since Shopify Payments IS Stripe with the same rates and no extra fee. The only reason to use Stripe directly is if you need Stripe-specific features (Connect, Billing, Radar) that Shopify Payments doesn't expose.

Moneris

Moneris has a Shopify gateway integration. The interchange-plus rates can be competitive at high volume, but add Shopify's third-party fee + Moneris's monthly fees + terminal costs, and you need serious volume ($75K+/month on Advanced or Plus) for this to make sense.

PayPal

PayPal works on Shopify as both a payment method and a gateway. Many merchants offer PayPal alongside Shopify Payments as an alternative — this doesn't trigger the third-party fee for PayPal transactions because PayPal is treated as an additional payment method, not a replacement gateway. Canadian PayPal rates are 2.9% + $0.30 standard.

The Platform Lock-In Question

Using Shopify Payments means your payment processing is tied to your e-commerce platform. If you ever leave Shopify, you need a new processor. If you use a third-party gateway like Helcim, your processor comes with you — switch to WooCommerce, BigCommerce, or a custom site and keep the same payment setup.

For most businesses, this is theoretical. You're not switching platforms every year.

But if you're evaluating Shopify vs. WooCommerce and payment flexibility matters, WooCommerce doesn't charge extra for third-party gateways.

If Canadian tax setup is the part you keep punting, use the Canadian Checkout Tax Wizard before you touch Shopify tax settings. It is much easier to map GST/HST, QST, and PST obligations first than to clean up a half-configured store later.

If your real problem is the money landing late or the payout not matching Shopify gross sales, use the Canadian Payout Timing & Reconciliation Wizard before you assume Shopify Payments is broken. It will usually separate normal batching from actual hold behaviour fast.

If you are worried Shopify Payments will look at your business model and decide you are too weird, seasonal, custom, or pre-order-heavy, run the underwriting readiness checklist before launch. It is much easier to tighten policies and document flow before volume shows up.

If you sell online in Shopify but still take a meaningful amount of in-person payments, stop treating it like a simple gateway choice and run the online + in-person payment stack chooser. It helps you decide when staying all-in on Shopify is sane and when a split setup is actually worth the extra complexity.