The right payment methods for the right customer — not all of them for everyone.
Invoice only for returning customers. Bank transfer only for Germany and Austria. Hide PayPal above €500. Cash only for pickup. KM Payment Rules applies rules like these directly in Shopify checkout — no Shopify Plus, no theme edits, no code.
Shopify shows every customer every active payment method. If you want to offer invoice payment only to business customers, bank transfer only domestically, or no PayPal on large carts, there is no switch for that in the settings. Shopify's own app ("Checkout Blocks") supports payment rules only on the Plus plan — everyone else needs an app from the App Store.
KM Payment Rules puts rules on top of your payment methods: hide, reorder, rename — based on cart total, shipping country, customer tags, products or the selected shipping method. The rules run as a Shopify Function right in checkout: fast, without a detour via third-party servers, on every Shopify plan.
Three actions, freely combinable — one or more payment methods per rule. The first payment method in the order is pre-selected at checkout.
Cart total, shipping country, customer tag, product or collection, selected shipping method. Conditions can be combined — "cart total over €500 and shipping country is not Germany".
Basic, Shopify, Advanced, Plus — the app uses Shopify's public Function API for payment customizations. No Plus required.
Rules apply directly in Shopify's checkout — nothing in the theme, nothing in storefront code. Uninstall the app and everything is back to how it was.
The rule runs as a Shopify Function on Shopify's own infrastructure. Cart and customer data never reach the app's servers — the app stores only your rules.
Interface, examples and support in both languages — with the payment methods that matter in the German-speaking market: invoice, bank transfer, cash on delivery, SEPA, Klarna, PayPal.
Renaming only works for payment methods without a logo — manual methods such as invoice, bank transfer or cash on delivery. PayPal, Klarna, Shop Pay, Apple Pay and Google Pay can be hidden and reordered, but not renamed. That is a limit set by Shopify, not by the app.
A monthly subscription, billed through your Shopify invoice. Pricing will be announced at launch.
No. The app uses Shopify's public Function API for payment customizations, which is available on every plan (Basic, Shopify, Advanced, Plus). Only Shopify's own "Checkout Blocks" app limits payment rules to Plus.
Under Settings › Payments › Payment customizations › Manage. Every active rule of the app appears there. You create and edit rules in the app itself.
Shopify allows up to 25 active payment customizations per store across all apps. That is plenty for normal use — most stores need two to five rules.
No. Rules apply directly in Shopify's checkout — the theme stays untouched, there is nothing to change in storefront code.
Yes. The app does not change how customers pay, only which payment methods a customer sees and in what order. It works with every payment method enabled in Shopify — Shopify Payments, PayPal, Klarna, manual methods such as invoice or bank transfer.
Yes — via customer tags, for example "b2b" or "wholesale". Customers without the tag don't see the payment method. Tags are set on the customer profile in Shopify, also in bulk via import.
Yes — condition "shipping country is / is not …". Typical cases: bank transfer only for Germany and Austria, cash on delivery only domestically, no invoice payment for international orders.
Yes — condition "cart total over / under …". Useful to save fees on large orders or to steer high-value orders towards bank transfer.
Yes — a fixed order or one that depends on conditions. The first payment method is pre-selected at checkout. The most common request: PayPal first, credit card last.
Yes — condition "selected shipping method is / is not …". That keeps "cash on pickup" truly reserved for pickup orders.
Yes — condition "cart contains product / product from collection". For example no cash on delivery for made-to-order items, or no invoice payment for gift cards.
Only those without a logo — manual methods such as "Invoice", "Bank transfer" or "Cash on delivery". PayPal, Klarna, Shop Pay, Apple Pay and Google Pay cannot be renamed. That is a Shopify rule.
Wallets like Apple Pay and Google Pay can be hidden as payment methods, but not reordered. Hiding only the express section at the top of checkout is something Shopify allows exclusively on the Plus plan.
Most common causes: the rule is not activated, the condition doesn't match (for example a customer tag spelled differently, or the customer is not logged in), or it is a draft order — Shopify does not apply payment customizations to draft orders.
That is usually not the app: payment provider deactivated, currency or country not supported by the provider, Shopify Payments not yet activated. Check Settings › Payments in Shopify first. The app shows you which rules are currently active.
Nothing dramatic: the rules run as a Shopify Function on Shopify's infrastructure, not on an external server. Checkout does not depend on the app being reachable.
A monthly subscription, billed through your regular Shopify invoice. Pricing will be announced at launch. Cancel anytime by uninstalling.
Simply uninstall the app — nothing else is required. Billing ends through Shopify Billing according to their rules.
None. The rule runs as a Shopify Function on Shopify's own infrastructure — cart, customer and address are evaluated there and never reach the app's servers. The app stores only your shop domain and your rule configuration.
The admin interface and rule configuration (database) run on Fly.io in Frankfurt, Germany (EU region). The rules themselves run at Shopify. Details are in the app's privacy policy.
The app implements all privacy webhooks required by Shopify. On uninstall, all stored shop data is deleted completely. End-customer data is never stored in the first place.
By email at info@kevin-metzdorf.com — on business days, reply usually within one to two business days, in German or English.
Kevin Metzdorf — Shopify developer and consultant based in Prague, in e-commerce since 2016. KM Payment Rules is the second in-house app after KM Distance Shipping and is built the same way as client projects: data model first, then code.
The app is in development and will be submitted to Shopify for review as soon as it is ready. If you would like a short note at launch, write to info@kevin-metzdorf.com.
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