The Most Common Mistakes at Checkout
Most e-commerce teams obsess over traffic and product pages. They A/B test headlines, tweak imagery, and invest heavily in driving users to the site. Then those same users reach checkout and leave.
Cart abandonment sits at roughly 70% across e-commerce (Ma, 2026)). That means seven out of ten people who showed enough intent to add something to their cart walked away before paying. Most of that loss is not a pricing problem. It is a friction problem. It is a checkout problem.
In this article, you will find the mistakes that cause it and what you need to fix.
Why Checkout Is Where Conversions Go to Die
By the time a shopper reaches checkout, they have already decided they want to buy. Your job at that stage is to stay out of the way. Every extra step, every surprise cost, every moment of confusion is an opportunity for them to change their mind.
For operators running 1,000+ SKU catalogs, this compounds. More products mean more variation in shipping rules, pricing structures, and product configurations. The more complex your catalog, the more opportunities there are for checkout to break down and the more damage each failure does at scale.
The good news: checkout mistakes are fixable. Most of them come down to a handful of structural issues that appear across nearly every underperforming store.
If you are losing people earlier, before they even reach checkout, site search is usually where it starts.
The 10 Most Common Checkout Mistakes
1. Forcing Account Creation Before Purchase
Requiring registration before a customer can buy is one of the highest-friction moves in e-commerce. The customer came to buy a product. They did not come to create a relationship with your database.
Guest checkout is not optional, it is expected. Offer account creation after the purchase, when you already have their details and they have already committed to the transaction. That sequence converts. The reverse does not.
2. Overly Long or Complicated Forms
Every field you add to a checkout form is a decision point. Most customers will not abandon on one extra field, but they will abandon on five unnecessary ones. Ask for what you need to complete the transaction: shipping address, payment details, and contact for order confirmation.
Phone number fields, date of birth requests, and marketing opt-ins mid-checkout all reduce completion rates. Strip the form back. The shorter it is, the faster it converts.
3. Hidden Shipping Costs Revealed at the Last Step
Showing the real total only at the final checkout step is one of the most reliable ways to generate cart abandonment. The shopper has already done mental accounting. When the number changes, trust breaks.
Display shipping costs as early as possible, ideally on the product page or cart view. If you offer free shipping above a threshold, make that visible throughout the journey. Surprises at checkout are almost always negative ones.
4. Too Few Payment Options
Payment preference is personal. Some customers use PayPal because it feels safer. Others use BNPL options like Klarna because of cash flow. Some prefer Apple Pay because it is faster. Others still pay by card and expect their specific card type to be accepted.
Restricting payment options does not just create friction. It actively excludes shoppers who are ready to buy but cannot pay the way you want them to. The minimum viable payment stack for a competitive e-commerce store today includes cards, at least one digital wallet, and a BNPL option.
5. No Trust Signals at the Point of Payment
The moment a customer enters card details is the highest-anxiety moment of the entire shopping journey. They are handing over financial information to a site they may have visited for the first time an hour ago.
Trust signals are not decoration. SSL badges, secure payment icons, clear privacy statements, and recognizable payment provider logos all do measurable work. Without them, hesitation increases and hesitation at checkout almost always ends in abandonment.
6. A Checkout Flow That Does Not Work on Mobile
Over 60% of e-commerce traffic is now mobile. If your checkout is difficult to complete on a phone, with small tap targets, form fields that do not trigger the right keyboard type, horizontal scrolling, or buttons that sit behind the keyboard, you are losing the majority of your potential buyers at the most critical step.
Mobile optimization is not a nice-to-have. It is table stakes. Test your checkout end-to-end on multiple devices before it goes live, and revisit it every time you make a structural change.
7. Weak or Absent Call to Action
A surprising number of checkouts bury the action. The "Place Order" button is small, below the fold, or styled identically to secondary elements on the page. The customer has to hunt for the thing they came to do.
The primary CTA at each checkout step should be the most visually dominant element on screen. It should be clear, action-oriented ("Place Order", "Confirm and Pay", "Complete Purchase"), and in a high-contrast color that stands apart from the rest of the page.
8. A Discount Code Field That Creates Regret
This is a specific pattern worth calling out. You have a discount code field. The customer sees it. They do not have a code. Now they leave checkout to search for one and many of them do not come back.
If you offer discount codes, either hide the field behind a collapsible link (so it is there but not prominent) or display it only when a code has actually been applied. Do not put an empty box in front of every customer and implicitly suggest they are paying more than they should.
9. No Order Confirmation Beyond a Thank You Page
A checkout that ends with a "Thanks!" page and nothing else creates anxiety. Did the payment go through? Is the order processing? What happens next?
Every completed checkout should trigger an immediate confirmation email with a full order summary: items purchased, total paid, estimated delivery, and a way to contact support if something is wrong. This is not just good UX. It is the difference between a customer who trusts you and one who files a dispute because they were not sure the transaction processed.
10. No Support Access During Checkout
Questions happen mid-checkout. A customer is unsure about a return policy, or they want to confirm a delivery date, or something in the form is not working. If there is no way to get help, they leave.
A visible live chat option or a prominent link to your FAQ/support page, specifically accessible from within the checkout flow, reduces abandonment from uncertainty. The customer does not need to leave checkout to get an answer. They just need to know help is available.
What Good Checkout Design Actually Looks Like
A high-converting checkout has four properties: it is short, it is transparent, it is reassuring, and it works on any device. Everything else, including visual design, upsell opportunities, and loyalty points, comes after you have those four right.
The simplest diagnostic you can run is to go through your own checkout as a first-time customer with a device you do not usually test on. Count every step, every form field, every moment where something could be unclear. That gap between what you assume and what a new customer actually experiences is where your abandonment rate lives.
The Product Data Connection
Checkout friction does not always start at checkout. For stores with large catalogs, data quality problems upstream create confusion that surfaces at the final step.
A customer adds a product to their cart based on one set of details: a size, a delivery estimate, a price. Then, they find different information at checkout. That inconsistency is a trust problem. It happens when product data is managed manually across dozens of SKUs, channels, and markets, and synchronization fails.
Accurate, consistent product data across the entire shopping journey is part of checkout performance. It is not a separate problem.
If data gaps in your catalog are feeding checkout inconsistency, this article shows how to close them.
Takeaways for E-Commerce
- Cart abandonment is mostly a friction problem, not a pricing problem. Most shoppers leave because checkout is too hard, not because they changed their mind about the price.
- The five highest-impact fixes are: guest checkout, transparent shipping costs, mobile optimization, trust signals at payment, and a clear primary CTA.
- Discount code fields are a quiet conversion killer. Hide or collapse them unless the customer has a code to apply.
- Post-purchase confirmation (email, not just a thank you page) directly affects trust and repeat purchase rates.
- For large catalogs, data inconsistency between product pages and checkout is its own category of abandonment driver.
- Small structural changes to checkout often outperform large marketing investments because they convert intent that already exists.
Every sale you lose at checkout was a customer who had already decided to buy. That is the most expensive kind of loss. Fix the friction first.
See how Dyver keeps product data consistent across channels, so what shoppers see in your catalog matches exactly what they see at checkout. Explore Dyver →
Frequently Asked Questions
What is the average cart abandonment rate in e-commerce? Cart abandonment averages around 70% across industries. Checkout-specific abandonment, meaning users who entered checkout but did not complete it, is typically around 20 to 25% of that total.
What is the single biggest cause of cart abandonment? Unexpected costs at checkout, primarily shipping, is consistently the top reason shoppers abandon. Transparency early in the journey addresses this more effectively than any checkout redesign.
Does guest checkout really improve conversion rates? Yes. Multiple studies have shown that adding a guest checkout option reduces abandonment, particularly for first-time buyers. Many customers who complete a guest purchase will opt into an account afterwards when prompted.
How do I know if my checkout is underperforming? Track your checkout funnel step by step in analytics. If you see a significant drop between any two steps, from cart to checkout entry, checkout entry to payment, or payment to confirmation, that step is your priority.
How often should I audit my checkout flow? After every major site update, after any change to payment providers or shipping configuration, and at minimum once per quarter. Test on mobile each time.