Payment Gateways: Stripe/PayPal

Secure payments. Includes PCI DSS Compliance, Localization Logic, Subscription Architecture and Fraud Detection — delivered by IQDigital's senior team.

Payment gateway integration lets customers pay securely and smoothly on your site or app. IQDigital integrates Stripe, PayPal and Adyen with branded, PCI-compliant checkout forms, local currencies and payment methods, subscription billing with proration and dunning, and 3D Secure 2.0 fraud protection.

Who it's for

  • Businesses selling internationally that need local payment methods
  • SaaS and subscription companies with recurring billing
  • Marketplaces that pay out to multiple sellers

What is a payment gateway integration?

The payment moment is the most sensitive touchpoint in the customer journey. IQDigital integrates friction-free, fortress-secure payment gateways (Stripe, PayPal, Adyen) that maximize authorization rates. We implement 'Stripe Connect' for marketplace architectures and 'Stripe Elements' for custom, branded checkout forms that maintain PCI compliance without redirecting the user.

How we support global payments and subscriptions

We engineer for 'Global Commerce.' We implement logic to accept local currency and local payment methods (e.g., iDEAL, SEPA, Alipay) based on the user's IP address. We set up 'Subscription Logic' for SaaS and recurring revenue models, handling proration, upgrades, and dunning (failed payment recovery) automatically.

How we secure the payment flow

Security is paramount. We implement 3D Secure 2.0 flows to prevent fraud while minimizing friction for legitimate users. We utilize webhooks to trigger instant fulfillment upon successful payment. We turn the complex regulatory and technical web of payments into a simple, invisible step for your user, ensuring that when they want to pay, nothing stands in their way.

What's included

  • PCI DSS Compliance — Maintaining highest security standards.
  • Localization Logic — Dynamic currency and method selection.
  • Subscription Architecture — Handling recurring billing complexities.
  • Fraud Detection — Implementing 3D Secure and radar rules.

How an engagement runs

  1. Diagnose (Week 1) — We find the money before we spend yours.
  2. Build (2–8 weeks) — Senior engineers. Your stack. Weekly proof.
  3. Launch (Go-live) — Released against a baseline, not a hope.
  4. Compound (Ongoing) — The second month should beat the first.

How the work is scoped

  • Engagement: Fixed-scope project

Questions about Payment Gateways

Which payment providers do you integrate?

Stripe, PayPal and Adyen — including Stripe Connect for marketplaces and Stripe Elements for branded checkout forms.

Do customers have to leave our site to pay?

No. Embedded, branded checkout forms keep customers on your site while staying PCI compliant.

Can you handle subscriptions?

Yes: recurring billing with proration, upgrades and automated recovery of failed payments (dunning).

Can customers pay in their local currency?

Yes. Currency and payment methods such as iDEAL, SEPA or Alipay can be offered based on the customer's location.

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What IQDigital provides

IQDigital designs, deploys and operates production AI and growth systems for European businesses. Engagements are founder-led, integration-aware and built around measurable operational or commercial outcomes.

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