Ecommerce
Checkout optimization: why 7 of 10 carts are abandoned
June 30, 2026 · 6 min · ScaleLab
Industry-wide, roughly seven of ten carts never become orders. Some of that is window shopping — but a large share is buyers who intended to purchase and hit friction in the final meters. Checkout is where intent is highest and tolerance lowest, which makes it the highest-stakes surface in the store.
01Surprise costs: the number one killer
Decades of research agree: unexpected costs at checkout — shipping, fees, taxes appearing late — are the leading stated reason for abandonment. The buyer approved one price and is shown another; the reaction is not recalculation, it is exit.
The fix is disclosure, early: shipping costs on the product page or cart, a threshold that makes shipping free, and no fee that appears for the first time at the payment step. Transparent totals convert better than optimistic ones.
02Friction: every field is a toll
Forced account creation is the second classic killer — guest checkout is not optional equipment. Beyond that, every unnecessary field, every page transition, every error message that clears the form is a toll paid in completed orders.
Express payment options — Shop Pay, Apple Pay, Google Pay, and in the Nordics Klarna and Swish — collapse the entire form for returning wallets. Their absence forces even willing buyers to type; on mobile, typing is where willing buyers are lost.
03Trust at the moment of doubt
Handing over card details is the highest-anxiety moment in the journey, and the checkout page carries the burden alone. Familiar payment logos, visible return terms, a reachable support contact — small signals that answer the unspoken question: what happens if this goes wrong?
Consistency matters as much as badges: a checkout that suddenly looks different from the store it belongs to re-awakens exactly the caution it should be settling.
04Recovery: the second chance most stores waste
Even a tuned checkout leaks, which is why the abandoned-cart flow is the highest-ROI email automation in commerce. The first message within hours — a helpful reminder, not a discount — recovers a meaningful share on its own. Save the incentive for a later message, or you train customers to abandon on purpose.
Measure abandonment by device and step. A spike at the payment step on mobile is a different bug than a spike at shipping selection — the funnel tells you which, if you instrument it.