Shopify Payment Gateway: Shopify Payments or a Third-Party Provider?
A Shopify payment gateway decides your per-transaction cost, the methods shown at checkout and your compliance posture: Shopify Payments is built in, but every third-party provider plan adds a surcharge on top of the gateway fee. Shopify hosts around 5 million active stores worldwide (BuiltWith data 2026), so these percentages compound quickly. Here is how to compare and how to integrate.
Shopify Payments and third-party providers: how the checkout works
The Shopify checkout supports two routes. The first is Shopify Payments, the native gateway built on Stripe: activated from settings, it processes cards, Shop Pay and wallets, and carries no additional platform charge on sales. The second is a third-party provider: an external gateway connected to the Shopify checkout, which remains the only option in markets where Shopify Payments is unavailable or for merchants whose category is not accepted by the native underwriting.
The mechanics are straightforward: the Shopify checkout sends the payment request to the configured gateway, the gateway runs the 3D Secure 2 authentication required by PSD2 for EU merchants, the issuer approves the debit and the order state updates. When the confirmation is missed (the customer closes the browser before the thank-you page), the order stays in a paid-pending state; a correctly configured webhook prevents this.
The choice affects three things: cost per transaction, the methods customers can pay with, and control of the payment flow. An Italian store that also sells at a physical counter, for instance, evaluates whether one provider can serve web and in-person sales from the same account instead of splitting them. The active Shopify plan also matters, because the platform financially penalises third-party providers on entry-level plans (see the fees section).
What Shopify sales really cost: the third-party surcharge
The cost merchants forget to budget is Shopify's additional transaction fee for sales processed by a gateway other than Shopify Payments. Per the published Shopify rate card (Shopify Payments page, 2026): 2.0% on the Basic plan, 1.0% on the Shopify plan and 0.5% on Advanced and above. This charge stacks on top of whatever the third-party gateway charges.
So the comparison is not just gateway versus gateway, it is the total percentage on every sale. A worked example on Basic with €10,000 monthly volume processed by a third-party gateway at 1.5%: 1.5% + 2.0% equals 3.5% of turnover, more than €350 a month, before fixed fees. With Shopify Payments on the same plan, card rates start at 2.9% plus a fixed fee online (Shopify Payments rate card 2026).
The alternative that removes the double cost is transparent IC++ pricing: interchange (capped in the EEA by Regulation (EU) 2015/751 at 0.2% debit and 0.3% credit) and scheme fees are real, regulated costs, and the provider adds only its markup. RoxPay applies €0.15 + 0.35% to 0.85% (IC++), so the visible fee is the transparent share only.
Comparison for a €10,000 monthly store: Shopify Payments on Basic costs roughly €320 per €10,000 (2.9% + €0.30 per order), while an IC++ model at 0.5% markup typically stays under €130. Italian-style mixes dominated by debit cards reveal how much a flat percentage overcharges.
Shopify Payments: strengths and limits for EU merchants
Shopify Payments bundles processing, Shop Pay, Apple Pay and Google Pay behind a single activation, with a dashboard inside the platform. For a new store it remains the fastest route: no external acquirer contract, refunds and disputes handled from the admin.
There are situations where it is not the right choice. First, merchants whose category is not accepted by the Shopify Payments underwriting process: for them, a third-party gateway that explicitly accepts the category is the only path. Second, stores selling on multiple channels: Shopify Payments covers only the Shopify channel, while an independent gateway can connect e-commerce, a physical POS and payment links to one account with unified settlement. Third, B2B sellers invoicing customers or collecting SEPA Direct Debit get limited coverage for these methods from the standard stack.
A practical risk note: suspensions of Shopify Payments due to chargeback ratios or missing documents freeze the entire checkout. A third-party provider with a dedicated dispute panel reduces the risk of a full collection stoppage.
Operational advice: before activating Shopify Payments, estimate the annual cost including both the card rates and the surcharge the platform would apply to a third-party provider; in some cases the difference reaches thousands of euros a year.
Integrating a third-party gateway into a Shopify store
Integration happens from the admin: Settings, Payments, third-party payment providers section. Choose the provider, enter the API credentials, select the checkout methods and validate in test mode before going live.
Three technical checks prevent most issues. First, compatibility with the current Shopify checkout: after the deprecation of checkout.liquid (checkout extensibility), integrations must follow the extensions architecture. Second, webhook handling, because the authoritative payment confirmation comes from the provider, not the redirect alone. Third, native 3D Secure 2 support with risk-based authentication, mandatory for EU merchants under PSD2 (Directive (EU) 2015/2366, effective 14 September 2019).
On PCI compliance: the Shopify checkout runs inside the platform's PCI DSS-certified environment, and a gateway working with redirects or hosted fields keeps the store within SAQ A self-assessment. Always ask the provider for the current PCI DSS Level 1 certificate.
For merchants needing a customised checkout or unusual flows (marketplaces, invoice payments, complex recurring billing), the gateway REST API remains the most controllable route; the standard plugin path covers most normal cases within hours.
EU payment methods, SCA and settlement for Shopify stores
A Shopify checkout showing only cards loses conversion in markets where local rails dominate. Across Europe the set to cover includes: iDEAL in the Netherlands, Bancontact in Belgium, BLIK in Poland, Bizum in Spain, Multibanco and MB Way in Portugal, MyBank in Italy, plus SEPA Direct Debit for subscriptions and B2B supplies.
On bank transfers, Regulation (EU) 2024/889 requires Union banks to receive instant payments within 10 seconds (reception obligation active since January 2025, sending since October 2025): gateways offering payment initiation on SEPA Instant let Shopify stores collect in real time, useful for high-value orders and cash-on-delivery replacements.
Three checks before choosing: settlement times per corridor (cards, SEPA, wallets), with a useful benchmark being payout to any SEPA bank within 48 hours; multi-currency support to sell across markets with local prices; and dispute tools with clear deadlines and evidence storage.
Finally, SCA exemptions: low-value transactions, trusted customers and subscriptions under an existing mandate can proceed without two-factor authentication (PSD2 exemptions; interchange limits under Regulation (EU) 2015/751). A gateway that handles exemptions well limits the conversion drop caused by authentication.
Frequently Asked Questions
How much does a Shopify payment gateway cost?
Shopify Payments starts around 2.9% + a fixed fee on the Basic plan (Shopify rate card 2026); with a third-party gateway the platform adds a surcharge of 2.0% on Basic, 1.0% on Shopify and 0.5% on Advanced. With RoxPay IC++ pricing the merchant pays €0.15 + 0.35% to 0.85% (IC++) plus interchange and scheme fees, capped in the EEA by Regulation (EU) 2015/751 (0.2% debit, 0.3% credit).
How do you add a payment gateway to Shopify?
From the admin: Settings, Payments, third-party payment providers. Search for the provider, paste the API credentials and enable the checkout methods. Some providers require a development store or review step for custom apps; follow the provider documentation. Run a sandbox test order and confirm the webhook event arrives before going live.
Shopify Payments or a third-party gateway for EU stores?
Shopify Payments wins on fast setup and Shop Pay; a third-party gateway wins for merchants with unaccepted categories, multiple channels (physical POS, payment links), local method needs (SEPA Direct Debit, iDEAL, Bancontact, BLIK) or transparent IC++ pricing. Include the platform surcharge (up to 2.0% on Basic) in every comparison.
What PCI compliance does a Shopify store need?
The Shopify checkout is hosted in the platform's PCI DSS environment, so merchants that never touch card data complete the simplified SAQ A questionnaire. The platform's current certificate is documented by Shopify Commerce. For custom token or webhook handling, follow the gateway provider's guidance. Verify the provider's own PCI DSS Level 1 certificate separately.
Can Shopify accept SEPA Direct Debit and instant transfers?
Yes, via a third-party gateway that supports them: Shopify Payments alone does not cover them as a primary channel. SEPA Direct Debit serves subscriptions and recurring supplies; instant SEPA credits arrive within 10 seconds under Regulation (EU) 2024/889 (EU banks must accept them from January 2025). In Italy MyBank is the reference circuit for bank-authorised checkout payments.
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