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Integration Engineering

UPI and Card Payments Setup

End-to-end payment handling for UPI, wallets, netbanking and cards, with verified webhook signatures and a daily settlement reconciliation you can trust.

14 working days₹26,999 incl. GST7 deliverables
Overview

What this service covers

Collecting payment is the straightforward part; the trouble comes later with duplicate webhooks, UPI collect payments confirming minutes afterwards and refunds missing from the books. We connect a UPI-capable payment gateway using idempotent order creation, signature-verified webhooks that tolerate retries and replays, and a nightly reconciliation that compares gateway settlements with your records. Full and partial refunds are wired into your admin tools, failed payments retry cleanly, and mandates are handled wherever you bill on a recurring basis. A sandbox test plan deliberately includes failure cases before you go live.

Deliverables

What you receive

  • Payment support for UPI, wallets, netbanking and cards
  • Idempotent order creation that handles duplicate submissions safely
  • Signature-verified webhook processing that is safe on retry and replay
  • Full and partial refunds connected to your admin tools
  • A nightly reconciliation comparing gateway settlements with your records
  • Mandate or subscription handling for recurring billing
  • A sandbox test plan that includes deliberate failure cases
How it runs

The work in 4 stages

  1. Stage 1: Confirm

    We pin down which methods and currencies you accept and how refunds work.

  2. Stage 2: Develop

    The integration is built in the sandbox, forcing failure cases.

  3. Stage 3: Match up

    Settlement matching and reports are connected to your ledger.

  4. Stage 4: Launch

    Live keys are deployed and early real payments are monitored together.

Fit and inputs

Who it suits, and what we need from you

Ideal for

  • Businesses moving from payment links to their own checkout
  • Companies losing revenue silently to failed payments
  • Finance teams reconciling settlements with sales manually every month

What we need from you

  • A verified gateway account with both sandbox and live keys
  • Agreed rules for refunds, GST handling and invoice numbering
  • A person who can deploy to production on launch day

You share these through the brief on your order page after checkout.

Why it helps

What changes for your team

  • Duplicate webhooks no longer create duplicate orders
  • Finance receives a daily reconciliation, not a month-end scramble
  • Late UPI confirmations still complete the order correctly
Questions

Questions about this service

We hook payments into the way you already raise invoices and can produce compliant invoice numbering. Your accountant remains the source of tax advice.

Yes, if your gateway account has them enabled. We will set up and test that route.

Yes. We plan the move, existing mandates included, so customers on recurring billing see no disruption.

This is a remote service: nothing is shipped physically, and the work is delivered into systems you control. See delivery and handover and refunds and cancellation for the full terms.

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