Buy now, pay later is close to table stakes for Australian ecommerce now, Afterpay in particular is deeply embedded in how Australian shoppers, especially in fashion, beauty, and homewares, expect to pay. The question most merchants actually need answered isn’t “should I offer Afterpay,” it’s “how do I offer it without the merchant fees quietly eating into margin I didn’t plan for.”
This post covers the practical setup on Shopify, and, more importantly, how to think about the margin trade-off properly so BNPL is a genuine growth lever rather than a cost you didn’t budget for.
How Afterpay Works on Shopify
Afterpay integrates with Shopify as a payment option that sits alongside your other checkout methods (Shopify Payments, PayPal, cards). The customer selects Afterpay at checkout, splits their payment into instalments, and gets the product immediately, you, the merchant, get paid upfront in full by Afterpay, minus their merchant fee, while Afterpay takes on the responsibility (and risk) of collecting the instalments from the customer.
This distinction matters for how you think about it commercially: from a cash flow perspective, you’re paid upfront just like a standard card transaction, not in instalments yourself. The trade-off is the merchant fee, which is charged as a percentage of the transaction rather than a flat fee like a typical card processing rate, and it’s generally higher than standard card processing fees, which is the core economics you need to plan around.
Getting It Set Up
Afterpay is added to your Shopify store as a payment method:
- Go to Settings > Payments in your Shopify admin
- Add Afterpay as a payment provider (this typically requires an Afterpay merchant account, set up either directly with Afterpay or through the integration flow Shopify provides)
- Confirm your product eligibility, Afterpay generally has minimum and maximum order value thresholds for what can be paid via instalments, so very low or very high-value orders may fall outside eligible ranges
- Enable Afterpay’s on-site messaging/badges (product page and cart messaging showing the instalment breakdown), since visibility of the option at the point of decision is a meaningful part of what drives BNPL’s conversion benefit
- Test a full checkout flow with Afterpay selected to confirm order confirmation, fulfilment, and refund handling all behave as expected before going live
For merchants using Shopify’s Afterpay integration, the setup itself is generally straightforward, the more important work is what happens around it, which is where margin planning comes in.
The Real Question: What Does It Cost You?
Afterpay and other BNPL providers charge a merchant fee taken from each transaction, calculated as a percentage rather than a flat rate. This is meaningfully different from typical card processing costs, and exact current rates vary and are set commercially between you and the provider, so rather than quoting a specific figure here, the practical step is to get your actual current rate directly from Afterpay’s merchant terms (or your existing agreement) and build your margin planning around that real number, not an assumption.
The mistake merchants make isn’t offering Afterpay, it’s not modelling its actual cost against the uplift it drives before deciding how heavily to promote it or whether to absorb the cost into pricing.
How to Offer BNPL Without Hurting Margins
Model it against average order value, not just conversion rate. BNPL providers commonly report that offering instalment payment increases average order value, because customers feel more comfortable buying a higher-value item when it’s split into smaller payments. If that’s true for your store, a higher merchant fee on a larger order can still be a net positive versus a smaller order at a lower fee, but you need your own AOV data comparing Afterpay orders to non-Afterpay orders to know if this is actually happening for you, rather than assuming it based on general industry commentary.
Decide whether to absorb the fee or build it into pricing. Some merchants absorb the BNPL fee as a cost of doing business (treating it like a marketing/conversion cost). Others build a small margin buffer into general pricing to offset it. What you generally shouldn’t do is add a separate surcharge specifically for BNPL customers, Afterpay’s merchant terms typically prohibit surcharging BNPL transactions differently from other payment methods, so check your merchant agreement before considering this.
Watch category-level margin, not just store-wide averages. BNPL uptake and its margin impact often varies significantly by product category, high-consideration, higher-price items (furniture, larger fashion purchases) tend to see more BNPL usage than low-price consumables. Check your margin impact at the category level, not just as a single blended number, since a healthy overall average can mask a category where BNPL fees are eating a disproportionate amount of margin.
Chargebacks, Disputes, and Fraud Considerations
One underrated benefit of BNPL worth factoring into the margin conversation: the BNPL provider generally takes on the credit risk of the customer defaulting on their instalments, not you. Once Afterpay pays you upfront for the order, a customer failing to complete their instalment payments is Afterpay’s collection problem, not yours, this is different from, say, a direct chargeback risk you’d carry on a standard card transaction in some fraud scenarios.
That said, disputes can still happen at the order level, if a customer disputes the underlying transaction itself (claiming the item wasn’t received, or wasn’t as described), that dispute process runs similarly to how it would with any other payment method, and you’re still responsible for providing evidence of fulfilment to resolve it. BNPL doesn’t remove your obligation to handle genuine order disputes properly, it specifically shifts the instalment collection risk, not the underlying transaction dispute risk.
Avoid stacking BNPL with heavy discounting on the same order. A deeply discounted order paid via a high-fee BNPL method compounds margin pressure from two directions at once. Consider whether your discount and BNPL promotion strategies are working against each other on the same transactions.
Reconcile refunds properly. When a BNPL order is refunded, check how the merchant fee is handled, some providers refund the fee proportionally on a full refund, others don’t, and partial refunds can behave differently again. Get this clear before you’re processing a return and discovering the fee doesn’t come back the way you assumed.
Afterpay vs Other BNPL Options
Afterpay isn’t the only BNPL provider available to Australian Shopify merchants, Zip, Klarna, and others operate in the same space, each with their own fee structures, customer bases, and brand recognition. Afterpay generally has strong brand recognition in the Australian market, particularly in fashion and beauty, which is part of why it’s often the default choice, but it’s worth checking whether your specific customer base and category are better served by Afterpay alone or by offering more than one option. Running multiple BNPL providers is possible on Shopify, but adds checkout complexity and means managing more than one fee structure and reconciliation process.
Measuring Whether It’s Actually Working
Once Afterpay is live, don’t just leave it running on the assumption it’s helping, check. Compare average order value and conversion rate for checkouts where Afterpay was selected against checkouts using other payment methods, ideally segmented by product category rather than as a single store-wide number. If a category shows little to no AOV or conversion benefit from BNPL but is absorbing the higher merchant fee on every transaction anyway, that’s a sign to reconsider how prominently it’s promoted for that category specifically, rather than assuming a blanket “offer it everywhere” approach is automatically optimal. Reviewing this every quarter or two, rather than setting it up once and forgetting about it, is what keeps BNPL a genuine growth lever instead of a quiet, ongoing drag on margin.
A Practical Setup and Margin Checklist
- Confirm your actual current Afterpay merchant fee rate from your agreement, not an assumed figure
- Set up the integration and test the full order, fulfilment, and refund flow before going live
- Enable on-site messaging so the option is visible at the point of decision
- Track AOV and conversion specifically for Afterpay orders versus non-Afterpay orders
- Check margin impact by product category, not just as a store-wide average
- Decide and document your policy on absorbing versus pricing in the fee
- Confirm refund fee-handling behaviour before you need it
- Reassess periodically as your product mix or fee terms change
Frequently Asked Questions
Does adding Afterpay to my Shopify store actually increase sales?
Many merchants across BNPL-friendly categories (fashion, beauty, homewares) do see a conversion or AOV benefit, but the size of that effect varies by category and audience, so it’s worth measuring against your own store’s data rather than assuming a generic uplift applies to your specific business.
Can I charge customers extra for using Afterpay to cover the fee?
Generally no, surcharging BNPL transactions differently from other payment methods is typically restricted under Afterpay’s merchant terms, so check your specific agreement before considering this rather than assuming it’s allowed.
Is Afterpay’s merchant fee higher than standard card processing?
Yes, BNPL merchant fees are generally structured as a percentage that’s higher than typical card processing rates, which is the core trade-off to plan for, get your exact current rate from your merchant agreement to model it accurately.
Should I offer Afterpay on every product, or restrict it to certain categories?
Afterpay itself applies eligibility thresholds based on order value, but beyond that, some merchants deliberately promote it more heavily on higher-consideration categories where it drives genuine AOV uplift, and less on low-margin or already-discounted items where the fee has a bigger relative impact.
What happens to the Afterpay fee if a customer returns their order?
This depends on Afterpay’s current refund policy and your merchant agreement, some structures refund the fee proportionally, others don’t on partial refunds. Confirm this directly with Afterpay or check your merchant terms before you’re relying on an assumption during a real refund.
Next Step
If you’re setting up Afterpay or reviewing how BNPL is affecting your margins, book a call to talk through your setup, or start with a Shopify audit to see how your current payment and pricing configuration is performing.
