Choosing a payment gateway is one of the few Shopify decisions that affects your business every single day, on every single sale. Get it wrong and you're either paying more in fees than you need to, losing customers at checkout, or dealing with settlement delays that hurt cash flow.
Most comparisons of payment gateways treat this as a generic ecommerce question. It isn't. Shopify has its own fee structure that changes the calculation, and if you don't understand how it works, you can end up paying two lots of transaction fees without realising it.
After 13 years building and maintaining ecommerce websites for Australian businesses, here's what actually matters when choosing a payment gateway for a Shopify store — and where the generic advice gets it wrong.
Shopify charges an additional transaction fee — separate from your payment processor's fee — on every order that doesn't go through Shopify Payments. Depending on your plan, that's typically an extra 0.5% to 2% on top of whatever Stripe, PayPal, or another gateway charges you directly.
This changes the maths entirely. A gateway that looks cheaper in isolation can end up more expensive once you factor in Shopify's third-party transaction fee. It's the single most common thing store owners get wrong when comparing options, and it's rarely mentioned in generic "best payment gateway" content because it's specific to Shopify's platform economics, not the payment industry generally.
The practical takeaway: if Shopify Payments is available in your country (it is in Australia), you need a genuinely good reason to use something else instead — not just a slightly better headline rate on the processor itself.
Shopify Payments is Shopify's own gateway, built on Stripe's infrastructure, and it's the default recommendation for most Australian stores.
Why it works well:
Where it falls short:
For a straightforward Australian store selling primarily to Australian and international customers with cards, Shopify Payments is usually the right starting point, and often the only gateway you need.
If you're using Stripe directly (rather than through Shopify Payments, which is Stripe under the hood anyway), this usually only makes sense if you need functionality Shopify Payments doesn't offer — custom subscription logic, marketplace-style split payments, or a checkout experience outside Shopify's standard flow.
Considerations:
For most standard Shopify stores, using Stripe directly instead of Shopify Payments doesn't make financial sense. It's a tool for specific technical requirements, not a default choice.
Australian shoppers have a strong preference for BNPL options at checkout, and this is one area where local buying habits genuinely differ from other markets. Offering Afterpay or Zip alongside a card gateway isn't just a payment option — it's frequently a conversion driver, particularly for fashion, homewares, and mid-ticket products.
What to know:
If your average order value sits in the $75–$500 range, it's worth testing at least one BNPL option. Below that range the fee often isn't justified by the conversion benefit; above it, customers are more likely to have other financing preferences.
PayPal remains a trust signal for a portion of Australian shoppers, particularly those less comfortable entering card details directly on unfamiliar sites.
Considerations:
Worth including as an option for customer trust and choice, but rarely worth building a payment strategy around exclusively.
| Shopify Payments | No | Default for most AU stores | Next business day |
| Stripe (direct) | Yes | Custom subscription/checkout logic | 2 business days |
| Afterpay / Zip | No (add-on) | Conversion lift on mid-ticket items | Upfront, provider takes risk |
| PayPal | Yes (add-on) | Customer trust/familiarity | 1–2 business days |
The decision framework is simpler than most comparisons make it look:
A few issues come up repeatedly when reviewing client stores that have grown their payment setup piecemeal over time:
Payment gateway choice is a small decision with an outsized, compounding effect on margin and conversion. Getting it right at setup — or auditing an existing store that's drifted into an unnecessarily expensive configuration — is one of the highest-value, lowest-effort reviews a Shopify store owner can do.
If you'd like a second opinion on your current payment setup, or you're building a new Shopify store and want it configured correctly from day one, I offer Shopify development and ongoing store support for Australian businesses.
Related reading: Best Payment Gateways in Australia — a broader look at payment gateway options across platforms, not specific to Shopify.
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