Paytm Payment Gateway for Odoo

This is a build-to-order engagement, not an instant apps.odoo.com download. After purchase, our Odoo engineers scope your exact flow (Paytm All-in-One JS Checkout vs. the Payment Gateway API, staging vs. production merchant credentials, INR-only vs. multi-currency storefront), then build, install, and hand over a production-ready module for Odoo 17, 18, or 19 (Community or Enterprise) with a 2–4 week lead time depending on scope.

Under the hood it is real Odoo, done right. A dedicated provider record extends payment.provider with Paytm-specific fields (MID, merchant key, industry type, website, environment) declared as encrypted-in-DB credential fields and gated behind ir.model.access.csv plus record rules so only Accounting/Payment managers can view secrets. Every transaction is initiated server-side, the Paytm checksum is generated and verified on both the initiate and the callback using the merchant key (never trusting the browser), and the return/callback controller confirms status against Paytm's Transaction Status API before a single payment.transaction is marked done. That server-to-server verification is what protects you from spoofed success redirects — a gap most quick integrations leave open.

Because we build against Odoo's ORM (models.Model, typed fields, @api.depends computes) and event framework, the module reconciles automatically: an inbound Paytm webhook lands on a @Public-style JSON controller, is authenticated by checksum, matched to the originating transaction, and drives the standard Odoo state machine (draft → pending → authorized → done / cancel / error). Successful payments confirm the sale order, register the payment on the invoice, and post to your accounting journals exactly as any native provider would. Refunds are handled from within Odoo — a full or partial refund on the invoice calls Paytm's Refund API, records the refId, and updates the linked transaction — so your finance team never leaves Odoo to reconcile a return.

INR localization is treated as first-class: amounts are formatted and rounded to Paytm's paise expectations, currency is enforced against the provider configuration, and the flow is tested end-to-end on Paytm's staging environment before go-live. You also get QWeb payment receipts, automated-action-driven status polling for transactions that hang in pending, and optional XML-RPC/JSON-RPC exposure if you drive orders from an external storefront or POS. The result is a Paytm checkout that looks, behaves, audits, and reconciles like it was always part of Odoo — because we built it to Odoo's own contract.