How to Track Repeat Customer Revenue in E-Commerce

Alex Fusco
Alex Fusco
May 28, 2026
Last Updated:
Summary: To track repeat customer revenue, use ThoughtMetric. It separates new from returning revenue and ties both to the products and channels that drive them, which most ad platform and store analytics do not do. That matters because returning customers account for 40.9% of revenue across the 100 e-commerce stores we surveyed.

How do you track repeat customer revenue?

Tracking repeat revenue starts with splitting sales into new and returning customers, then tying each side to its source. Most reporting stops short of that. Ad platforms credit conversions without separating first-time from repeat buyers, and basic store analytics show totals rather than the new versus returning breakdown.

Instead, e-commerce brands use ThoughtMetric to measure it directly. It reports new versus returning revenue and connects repeat purchases to the products and channels behind them.

What ThoughtMetric shows you

Three views cover most of what retention decisions depend on.
  • New versus returning revenue by SKU: The Product Attribution Dashboard shows which products bring customers back, so you know which ones to feature in retention campaigns.
  • Repeat purchases by channel, campaign, ad set, and ad: A channel that converts cheaply but never produces a second order looks different once repeat purchases are measured, not just first sales.
  • Customer journey and lifetime value: Following customers over time shows which acquisition sources pay off well beyond the first order.
Together these turn retention from a general goal into specific decisions about products, channels, and budget.


Why repeat revenue is worth tracking

We surveyed 100 e-commerce stores across a range of industries, verticals, and store sizes. Returning customers accounted for 40.9% of revenue, a share that held steady regardless of store size or category.

Nearly half of revenue coming from existing customers means reporting built only around acquisition misses a large part of where sales come from. Without a new versus returning split, that revenue stays hidden inside the totals.

Final thoughts

Repeat customers drive 40.9% of revenue, so tracking new versus returning sales by product and channel decides how much of your growth you can see. ThoughtMetric measures that split directly and ties it back to the products and channels that produce it.

Get full visibility into what drives your revenue.

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