GA4 Setup for Indian E-commerce: The Complete 2026 Guide

Why GA4 Setup Is More Complex Than You Think

Google Analytics 4 is fundamentally different from Universal Analytics, and the transition has been challenging for many Indian e-commerce brands. The event-based data model, the changed attribution logic, and the integration requirements with Indian payment gateways like Razorpay and Cashfree have created setup challenges that most generic GA4 guides don't address.

The Foundation: Correct Event Tracking

GA4's e-commerce tracking is built on a specific event structure. The critical events for Indian e-commerce are: view_item, add_to_cart, begin_checkout, add_payment_info, and purchase. Each must fire with the correct parameters — currency set to INR, value in rupees, item_id matching your product catalogue — for GA4 to report accurately.

Razorpay and GA4: The Integration Challenge

Razorpay's payment flow takes users off your website and back, which breaks GA4's session tracking. The solution requires implementing a proper thank you page with the purchase event firing on return from Razorpay, using Razorpay's webhooks to confirm successful payments before firing the purchase event, and setting the session timeout in GA4 appropriately to handle the Razorpay redirect.

Cross-Domain Tracking for Indian E-commerce

Many Indian e-commerce brands use separate domains for their main website, payment pages, and fulfilment portals. GA4 requires explicit cross-domain tracking configuration to maintain session continuity across these domains. Without it, every checkout becomes a new session and your conversion data is severely understated.

Attribution in the Age of Meta's 7-Day Window

One of the most confusing aspects of analytics for Indian e-commerce brands is the discrepancy between Meta's reported conversions and GA4's reported conversions. Meta uses a 7-day click, 1-day view attribution window by default. GA4 uses last-click attribution. For brands spending significant budget on Meta, this creates systematic underreporting in GA4 and overreporting in Meta — understanding this gap is essential for accurate budget decisions.