How much are abandoned carts actually worth?
The total value left in carts is not lost revenue. Some people were comparing products, checking delivery costs, saving items for later, or testing a coupon. Treating every cart as a sale produces an impressive number that cannot guide a budget.
A better estimate uses three layers: observed abandoned-cart value, a conservative recoverable share, and contribution margin. This turns a vanity metric into a decision model.
Use this calculation
Observed abandoned value = eligible abandoned carts × average abandoned-cart value
Expected recovered revenue = observed abandoned value × measured recovery rate
Expected contribution = recovered revenue × contribution margin − recovery cost
“Eligible” matters. Exclude test sessions, bots, carts without usable consent or contact details, duplicate sessions, already-converted customers, unavailable products, and carts below your commercial threshold.
A worked example, clearly labelled as hypothetical
Suppose a store records 400 eligible abandoned carts in one month with an average value of $80. The observed value is $32,000. If the store’s measured recovery rate is 6%, expected recovered revenue is $1,920. At a 35% contribution margin, that is $672 before software, messaging, discounts, and support costs.
This example is not a benchmark or promise. Replace every input with your own data. If you have no recovery history, model a low, middle, and high case instead of presenting one forecast as fact.
Build a small decision table
| Input | Where to get it | Common mistake |
|---|---|---|
| Eligible carts | Cart/session records | Counting bots and duplicates |
| Cart value | Current product and quantity data | Ignoring unavailable items |
| Recovery rate | Attributed completed orders | Using a vendor benchmark as a forecast |
| Contribution margin | Finance or order-level margin | Reporting gross revenue as profit |
Measure incrementality, not only attributed orders
Some customers would have returned without a reminder. A recovery link can claim credit for that order even when the message caused no change. If volume allows, keep a small control group that receives no recovery message. Compare completed orders between the messaged and control groups over the same window.
Also separate discount-assisted orders. If most recovered orders require 15% off, report the discount and margin impact alongside revenue. A workflow can increase attributed sales while reducing profit.
What belongs on the monthly report?
- Eligible abandoned carts and value.
- Customers contacted, delivered messages, clicks, and recovered orders.
- Revenue and contribution after discounts and messaging costs.
- Median time from abandonment to recovery.
- Unsubscribes, complaints, and suppression rate.
- Control-group difference where available.
Once the model is credible, use our practical recovery guide to design the workflow. Fix checkout blockers before increasing reminder volume; otherwise automation simply sends more people back to the same problem.
Source
Baymard Institute’s cart abandonment research is useful context for the wider market, but your forecast should still come from your own eligible carts, margins, and measured recovery.