Reviewed by Mayer Hyman, Payments Specialist | Reviewed for accuracy July 2026
Key Takeaways
- The average online shopping cart abandonment rate sits at 70.22%, based on a meta-analysis of 50 separate studies (Baymard Institute, 2026).
- Unexpected extra costs, mainly shipping and taxes revealed late in checkout, are the single biggest driver of abandonment, cited by 48% of US online shoppers (Baymard Institute, 2026).
- Mobile abandonment runs well above desktop, at 80.02% versus 66.41% (Baymard Institute, 2026).
- Checkout friction and payment trust are solvable problems, not fixed costs of doing business online.
Why Most Online Shopping Carts Never Become Sales
Cart abandonment is one of the most persistent problems in eCommerce, and it hasn’t improved much in years. The average abandonment rate across industries and regions is 70.22%, according to a meta-analysis of 50 studies from the Baymard Institute (Baymard Institute, 2026). In practical terms, for every ten shoppers who add something to a cart, roughly seven leave without buying.
That number gets less surprising once you look at where the drop-off actually happens. Shoppers who reach checkout have already decided they want the product. What sends them away is what they encounter between “add to cart” and “confirm payment”: costs they didn’t expect, steps they didn’t want to complete, or a payment experience that made them hesitate.
The Real Reasons Shoppers Abandon Checkout
Unexpected Costs Are the Number One Culprit
Surprise fees at checkout, shipping, taxes, or service charges the shopper didn’t see coming, are the leading cause of abandonment. Baymard’s research puts this at 48% of US online shoppers, making it the single largest factor by a wide margin (Baymard Institute, 2026). Related research from eMarketer reaches a similar conclusion: extra costs consistently rank as the top reason consumers walk away from a completed cart rather than finishing the purchase (eMarketer, 2024). Fee shock erodes trust almost instantly, even when the total price is competitive, because it feels like a bait-and-switch rather than transparent pricing.
Checkout Friction Kills Momentum
Long or complicated checkout flows are the second major driver. Extra form fields, forced account creation, and multi-page checkouts all give a shopper more opportunities to reconsider or simply give up. Every additional step between the cart and the confirmation screen is a chance to lose someone who already intended to buy.
Payment Trust and Choice Matter More Than Many Realize
Security concerns are not a minor factor. Baymard’s data shows 19% of shoppers abandoned a checkout in the past three months specifically because they didn’t trust the site with their card information, and 18% actively look for security indicators, like recognizable badges or clear encryption signals, before entering payment details (Baymard Institute, 2026). Missing or unfamiliar payment options add to the problem: shoppers who don’t see their preferred payment method are far more likely to leave rather than switch to something unfamiliar.
Mobile Makes the Problem Worse
Cart abandonment is significantly worse on mobile than on desktop. Baymard’s benchmarks show mobile abandonment at 80.02%, compared with 66.41% on desktop, a gap of roughly 14 points (Baymard Institute, 2026). Small screens amplify every other issue on this list: form fields are harder to fill out, load times matter more, and a clunky payment step is more noticeable when a shopper is trying to complete it with their thumb.
What Actually Reduces Cart Abandonment
Most cart abandonment isn’t a lack of buying intent, it’s friction that shows up at exactly the wrong moment. The eCommerce brands that keep more of their traffic through to purchase tend to focus on the same handful of changes:
- Show total cost early. Surface shipping estimates and taxes before the final checkout page, not after the shopper has already committed mentally to a lower number.
- Simplify the checkout flow. Fewer form fields and a working guest checkout option remove the two most common points of friction.
- Offer the payment methods shoppers already trust. Cards, digital wallets, and buy-now-pay-later options each appeal to a different segment of buyers; missing the right one costs conversions.
- Make the payment step visibly secure. Recognizable security badges and a clean, distinct payment form reduce the hesitation that shows up right before a shopper enters their card details.
- Follow up on abandoned carts. Automated reminders and recovery emails or texts recapture a meaningful share of shoppers who were interrupted rather than uninterested.
Where Payment Infrastructure Fits Into the Fix
Several of the biggest drivers of cart abandonment, hidden fees, missing payment options, and security hesitation, are payment infrastructure problems at their root, not just marketing or UX issues. A checkout page can be beautifully designed and still lose customers if it only supports one card network, can’t calculate tax and shipping accurately before the final step, or doesn’t visibly reassure shoppers that their card data is protected.
Cartis Payments works with merchants and ISVs to close that gap, pairing payment processing and gateway infrastructure with fraud protection and chargeback management delivered through a single integration, rather than stitching together separate tools for each piece. The goal isn’t a flashier checkout button; it’s removing the specific friction points, cost surprises, limited payment choice, and trust gaps, that show up in the abandonment data above.
FAQ
What is the average cart abandonment rate in eCommerce?
The average is 70.22%, based on a meta-analysis of 50 studies from the Baymard Institute. Rates vary by industry and device, but this has stayed a persistent figure for years.
What is the number one reason shoppers abandon their cart?
Unexpected extra costs, primarily shipping fees and taxes revealed late in checkout, are the leading cause, cited by 48% of US online shoppers according to Baymard Institute research.
Why is mobile cart abandonment higher than desktop?
Mobile abandonment runs at roughly 80% compared with about 66% on desktop. Smaller screens make form fields, load times, and payment steps more prone to friction, which compounds the same issues that affect desktop checkout.
Can better payment infrastructure actually reduce cart abandonment?
Yes, to the extent the abandonment is caused by missing payment options, inaccurate cost calculation, or security hesitation at the payment step. Design changes address part of the problem, but the underlying fixes for cost transparency, payment choice, and fraud protection are infrastructure decisions.
