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Payment gateway setup guide for India (2026)

KYC to live payments: choosing a gateway, configuring UPI and cards, settlements, GST invoices and the checkout errors that kill orders.

A payment gateway is the service that moves money from your customer's UPI app or card to your bank account. For most Indian SMEs the choice is between Razorpay, Cashfree and PhonePe Payment Gateway (with PayU and CCAvenue in specific niches). Setup takes days; getting it right — settlement timing, failure handling, GST paperwork — is the actual work.

Step 1: pick on facts, not ads

  • Supported methods: UPI, cards, netbanking, wallets, EMI and recurring mandates (eNACH) if you sell subscriptions.
  • Pricing: setup fee, annual fee, per-transaction rate per method (UPI pricing differs from cards), GST on fees, and refund/chargeback terms.
  • Settlement cycle: T+1 vs T+2 to your current account — matters enormously for COD-heavy and low-margin sellers.
  • Developer fit: WooCommerce/Shopify plugins, webhooks for order status, and test-mode quality.

Step 2: KYC and activation

Keep PAN, GSTIN (if registered), cancelled cheque, business address proof and a live website with contact, refund, shipping and privacy pages — gateways reject bare or policy-less sites. Activation typically takes 2–5 working days after documents clear.

Step 3: configure checkout properly

  • Show UPI first on mobile, cards second; preselect nothing on desktop.
  • Handle failures gracefully: pending UPI mandates need a 'check status / retry' path, not a dead error page.
  • Always confirm orders by webhook, never by the success-page visit alone — customers close tabs early.
  • Issue GST invoices with correct HSN, place-of-supply and rounding; reconcile gateway settlement reports weekly.

COD + online payments together

Most Indian stores run both. Keep COD for trust but add small nudges (prepaid discount, COD fee transparency) and confirm COD orders by SMS/WhatsApp to cut returns. Our ecommerce platforms guide covers how COD workflows differ per platform.

Common mistakes

  • Going live in test mode keys and wondering why money never arrives.
  • No refund policy page — the top reason for gateway approval delays and disputes.
  • Ignoring settlement reconciliation until tax season.
  • One gateway with no fallback during bank/UPI downtimes.

FAQs

Which gateway is cheapest?

It depends on your mix: UPI-heavy stores pay differently from card-heavy ones. Compare effective cost on your last 3 months of orders, not headline rates.

Do I need GST for a payment gateway?

Individuals can start in some cases, but a current account and GSTIN smooth approval and invoicing. Check your gateway's current KYC list.

Can CBWS integrate it?

Yes — WooCommerce and custom checkouts with Razorpay, Cashfree and PhonePe, including webhooks, GST invoice formats and shipping integrations. See pricing.

Need help with this? Talk to CBWS.

Call +91-9456315289 or WhatsApp us — share your URL or idea and get a clear next step.