Payment Gateway Integration
Payment gateway and local method integration with fraud controls, retries, and reconciliation handled properly.
- Webhook
- Source of truth
- Multi-method
- Per-market coverage
- 3-8 wk
- Typical integration
About payment gateway integration
Taking a card payment is straightforward. Handling everything around it — failures, retries, refunds, chargebacks, reconciliation, and regional methods — is where the actual work sits.
Local methods affect conversion
Card-only checkouts lose sales in markets where customers expect UPI, iDEAL, Klarna, or wallets. Method availability is frequently a larger conversion factor than checkout design in those markets, and it is a cheap fix.
Webhooks are the source of truth
Payment state changes asynchronously — captures, disputes, refunds, subscription events. Systems that rely on the browser redirect to confirm payment produce mismatched orders. We implement webhook handling with idempotency and retries so records stay correct.
Reconciliation prevents silent errors
Gateway records, order records, and accounting must agree. We build reconciliation so mismatches surface as alerts rather than being discovered at month end.
What the engagement includes
Gateway integration
Stripe, PayPal, Razorpay, and regional providers.
Local payment methods
UPI, wallets, bank transfer, and buy-now-pay-later per market.
Webhook handling
Idempotent processing of asynchronous payment events.
Subscription & recurring billing
Renewals, proration, and dunning for failed payments.
Reconciliation & reporting
Gateway, order, and accounting records kept in agreement.
What you get
The measurable results this service is accountable for.
- Local payment methods matched to each market
- Payment state accurate through webhook handling
- Failed payments retried with dunning
- Reconciliation catching mismatches early
- Fraud controls tuned to your risk profile
A process without surprises
Clear checkpoints at every stage, so you always know what is shipping and when.
- 1
Discovery & scoping
We map requirements, users, integrations, and constraints, then agree scope and a fixed quote before work starts.
- 2
Architecture & design
Technical architecture and user flows are agreed and prototyped before implementation begins.
- 3
Build & review
Development in reviewable increments, with a staging environment you can see and comment on throughout.
- 4
Launch & support
Performance and security checks, documented handover, deployment, and an agreed support window after go-live.
What is included at each tier
Engagements scale with your stage. Every tier includes everything below it.
| What's included | Starter | Growth | Enterprise |
|---|---|---|---|
| Gateway integration | Included | Included | Included |
| Webhook handling | Included | Included | Included |
| Local payment methods | Not included | Included | Included |
| Subscription billing & dunning | Not included | Included | Included |
| Reconciliation & reporting | Not included | Not included | Included |
Sectors we work in
We treat webhooks as the source of truth and build reconciliation in, so payment records do not silently diverge.
Common questions
Which gateway should we use?
Do you store card details?
More e-commerce development services
Ready to talk about payment gateway integration?
- No-obligation quote
- Reply within 1 business day
- You own every asset