Tracking discount code usage in GA4 requires passing the code as a custom parameter with your e-commerce transactions. As of early 2026, GA4’s enhanced measurement and custom event capabilities allow for detailed analysis of promotional performance, providing insights beyond simple revenue figures.
- Enhanced Ecommerce Tracking: Ensure your website’s e-commerce data layer is correctly implemented to send transaction details, including the applied discount code, to GA4.
- Custom Parameters: Within your e-commerce events (specifically `view_item`, `add_to_cart`, and `purchase`), include a custom parameter named ‘discount_code’ and populate it with the actual code used.
- GA4 Reporting: Create custom reports and explorations in GA4 to segment data by this ‘discount_code’ parameter. This allows you to see revenue, conversion rates, and average order value for each code.
- Integration with Platforms: Current systems include seamless integration with popular Australian e-commerce platforms like Shopify, WooCommerce, and BigCommerce, simplifying data transfer.
In 2026, Australian businesses must also be mindful of data privacy regulations. GA4’s consent mode, when correctly configured, ensures compliance with Australian Privacy Principles (APPs) by respecting user consent choices regarding data collection. Accurate tracking of discount codes also helps demonstrate the ROI of marketing campaigns to stakeholders and informs future promotional strategies.
Instead of navigating these technical complexities yourself, let ROI.com.au handle the setup and optimisation of your GA4 tracking. Contact our team today and we can take care of all this for you.
