Checkout is where interest turns into revenue, and where it leaks.
- Surprise costs. Show shipping and tax before the last step.
- Forced accounts. Offer guest checkout.
- Long forms. Ask only what you need to ship and bill.
- Missing payment methods. Add local options.
- Slow mobile pages. Test on real phones.
- No trust signals. Show policies, support contact and secure-payment cues.
- Weak error messages. Say exactly what is wrong with a field.
- No address help. Add pin-code or postcode lookup.
- Unclear delivery dates. State when the order arrives.
- No help nearby. Keep WhatsApp or chat one tap away.
Why checkout deserves more attention than your homepage
Most owners spend their budget getting visitors to the store: ads, search, social posts. Far fewer look closely at the last few screens, even though that is where the money is won or lost. The Baymard Institute, which collects cart-abandonment research, puts the average abandonment rate at around 70 percent (Baymard cart abandonment statistics). You will not recover all of them, but even a small improvement at checkout is worth more than a similar improvement in traffic, because those visitors already wanted the product.
The ten mistakes above are the most common. Below, each one is explained with what it looks like in practice and a concrete fix you can brief to your developer today.
Mistake 1: Surprise costs at the last step
A buyer sees a price of 1,499, then discovers shipping, tax and a handling fee that add a third on top. They feel tricked and leave. Fix: show an estimate of shipping and tax on the product and cart pages, offer a delivery pin-code or country check early and list the total clearly before the payment step. If you offer free shipping above a threshold, show a progress message such as “Add 300 more for free delivery”.
Mistake 2: Forcing an account
First-time buyers rarely want to create a password to buy one item. Fix: allow guest checkout, collect an email and phone number, and offer to save details after the order is placed with a single tap. Social or phone-number sign-in can reduce friction further where it suits your market.
Mistake 3: Long, repetitive forms
Every extra field costs completions. Asking for a fax number, a title and a company name from a consumer is noise. Fix: ask only for what you need to ship, bill and contact. Use address auto-complete, pin-code or postcode lookup that fills city and state, and a single “billing same as shipping” tick. Mark optional fields clearly or remove them.
Mistake 4: Missing the payment methods your buyers use
A store that accepts only cards in a market where most people pay by UPI, wallets, bank transfer or cash on delivery will lose orders it should have won. Fix: study your customers. In India that usually means UPI, cards, net banking and cash on delivery for suitable categories. In other regions it can mean local wallets, instalments or bank redirects. Our guide on local payment methods by country covers this in detail. Show the payment icons early so buyers know their option is available.
Mistake 5: Slow or heavy mobile pages
Most online shopping now happens on phones, often on mid-range devices and unstable networks. A checkout that needs many seconds to respond to each tap feels broken. Fix: reduce scripts, compress images, avoid pop-ups that cover the form and test on a real phone over mobile data. Use large tap targets, number keyboards for phone and pin-code fields and autofill attributes so the browser can complete name and address.
Mistake 6: No trust signals at the moment of payment
Buyers who do not know your brand look for reassurance right where they enter payment details. Fix: show a clear return policy link, support contact, secure-payment indicators from your gateway, delivery timelines and genuine reviews. A visible WhatsApp or phone number reduces anxiety more than most badges.
Mistake 7: Unhelpful error messages
A red banner that says “Something went wrong” with no clue what to change sends buyers away. Fix: validate each field as the person types, explain the problem in plain words next to the field (“Enter a 6-digit pin code”), keep what they already typed and never clear the form after an error. Test failed card payments and make the message tell people what to do next, such as trying another method.
Mistake 8: No delivery clarity
If a buyer cannot tell when the order will arrive, they hesitate. Fix: show an estimated delivery date based on pin code, display courier options and cut-off times and send tracking links by email and WhatsApp. For B2B orders, show lead times and minimum quantities before checkout rather than after.
Mistake 9: Weak order confirmation
A buyer who pays and then sees a blank page or receives no email becomes a support ticket or a chargeback. Fix: show a clear confirmation page with the order number, items, address and expected delivery, send an email immediately and add a WhatsApp or SMS message where your audience prefers it. Offer a simple way to track or change an order.
Mistake 10: No help close at hand
Doubts at checkout are normal: “Will this fit?”, “Is cash on delivery available?”, “Can I get a GST invoice?”. If the only way to ask is a contact page, many will simply leave. Fix: place a WhatsApp button or chat link on the cart and checkout pages. Answer quickly during business hours and set an auto-reply outside them.
How to measure where you are losing buyers
You cannot fix what you cannot see. Set up analytics to track each step: product view, add to cart, start of checkout, address entered, payment started, order completed. The step with the biggest drop is your first target. Watch also for patterns: drops that happen only on mobile, only for one payment method or only from one traffic source point to specific problems. Session recordings, even for a short period, show where people hesitate or tap repeatedly.
A simple testing routine
- Place an order on your own store every week using a phone, on mobile data, as a guest.
- Try each payment method and one deliberate failure, such as a wrong card number.
- Try a different pin code or country to check shipping rules.
- Read the confirmation email and message on your phone.
- Note anything that confused you and fix it.
Thirty minutes a week catches problems before customers report them.
Quick wins you can ship this month
- Enable guest checkout.
- Show total cost, including shipping and tax, in the cart.
- Add your top local payment method.
- Cut optional form fields.
- Add address auto-complete or pin-code lookup.
- Place a WhatsApp button on the cart and checkout pages.
- Send an order confirmation by email and WhatsApp.
Working with NNT Mart
NNT Mart builds mobile-first online stores and Android and iOS apps with checkout designed around local payments, short forms and clear delivery information. If you already have a store and suspect checkout is losing you orders, send us the address. We will review the journey on a phone, list what to change in order of impact and give you a quote for the fixes. Use the contact form or WhatsApp and we reply within minutes.
How NNT Software can help
If your checkout leaks orders, NNT Software can rebuild it as a mobile-first flow on an API-first NNT Mart store: guest checkout, pin-code lookup, local payment methods, clear delivery dates and WhatsApp help on the cart page. Because the storefront is separate from the commerce back end, we can improve checkout screens without touching stock, pricing or order rules. Send us your store address and we will walk through it on a phone and tell you which of the ten mistakes we see.