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Mollie API Integration | Payment Orchestration

Integrate Mollie Payments into your checkout or billing stack with secure webhooks and reconciliation hooks.

Mollie API integration

What is Mollie?

Mollie is a European PSP with straightforward APIs for payments, refunds and mandates. Webhooks communicate state changes reliably.

Why integrate?

Payments must be idempotent and auditable. Custom wiring aligns PSP events with your order lifecycle.

Common use cases

  • Custom checkout with back-office status updates
  • Recurring direct debit for subscriptions
  • Automated reconciliation with accounting
  • Multiple storefronts under one entity

Technical approach

We isolate API keys per environment, verify webhook signatures and persist PSP identifiers in your domain model.

Investment and timeline

A first payment flow is compact; marketplace splits or multi-currency add engineering time.

Further reading

API connectionsStripe API Integration | Billing & ConnectExact Online API Integration | MG SoftwareStripe vs Mollie: Picking the Right Payment PlatformAPI Integration Examples - Practical Integrations for Businesses

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Frequently asked questions

Yes for different regions or products with clear webhook routing.
Idempotency keys and unique constraints on payment references.
We align with your compliance needs and document data flows.

Need this integration?

We design reliable API integrations with monitoring and error handling.

Start a project

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MG Software
MG Software
MG Software.

MG Software builds custom software, websites and AI solutions that help businesses grow.

© 2026 MG Software B.V. All rights reserved.

NavigationServicesPortfolioAbout UsContactBlogCalculator
ServicesCustom developmentSoftware integrationsSoftware redevelopmentApp developmentSEO & discoverabilityAPI integrations
LocationsHaarlemAmsterdamThe HagueEindhovenBredaAmersfoortAll locations
IndustriesLegalEnergyHealthcareE-commerceLogisticsAll industries