# Cart Properties in Custom Events

You can now include cart properties as filters when creating custom events, making it easier to define custom event logic based on what's in the user’s cart such as product IDs, quantities, prices, or categories.

Source: https://amplitude.com/en-us/releases/cart-properties-in-custom-events

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AnalyticsJun 9, 2025

[\[All updates\]](/releases)

### Cart Properties in Custom Events

Brian Cooper

**Description:** You can now include *cart properties* as filters when creating *custom events*! This makes it easier than ever to define custom event logic based on what's in the user’s cart — think product IDs, quantities, prices, or categories.

**Why:** Previously, customers couldn’t use cart-level properties when defining custom events, limiting their ability to tailor event definitions around commerce behavior. With this change, teams can now construct more precise, expressive custom events — for example, creating an event for “cart contains product X.” This unlocks richer downstream analysis and conversion funnel tracking for commerce-focused teams.

**Customers:** This is especially valuable for retail and e-commerce customers, but any team using object array properties will benefit.

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