Checkout CRO: Fixes That Lift Earnings Per Session

The three hundred million dollar button

A large online retailer had a simple form between the shopping cart and the checkout. Two fields, two buttons, one link.

The fields were for an email address and a password. The buttons said Login and Register. The designers believed they were helping returning customers go faster.

A usability consultant, Jared Spool, watched real shoppers use it. First-time buyers resented being asked to register. Returning buyers could not remember which email they had used.

So the team removed the Register button. In its place they put a button that said Continue, with one sentence saying no account was needed to buy.

The number of customers completing a purchase rose by 45 percent. That was worth an extra 15 million dollars in the first month and 300 million in the first year.

Where carts are lost

That story is two decades old. The pattern is still current.

A research firm, Baymard Institute, has collected 50 studies of how often online shopping carts are abandoned. The average across them is 70.22 percent.

Many of those people were only browsing. Baymard asked the rest why they left.

The leading answer, at 40 percent, was extra costs: shipping, tax, and fees that appeared late. Then slow delivery at 20 percent, not trusting the site with card details at 19, being made to create an account at 18, and a checkout that was too long or complicated at 17.

Almost none of that is about the product. The buyer had decided. Something on the last page changed their mind.

Baymard's own estimate is that a large site can gain about 35 percent in conversion from better checkout design alone. That is their figure for large retailers, not a promise for yours.

The Two-Lever Diagnostic

Before changing anything, know what you are trying to move. A checkout has two levers.

Lever one is completion. Of the people who reach the checkout, what share finish?

Lever two is order value. What does the average finisher spend, including anything added on the way through?

Multiply them and you have what each visit to the checkout earns. We call that reading the Two-Lever Diagnostic, and it is a special case of earnings per session.

The reason to read both is that they pull against each other. Add an offer to the checkout and order value rises while completion often falls. Strip the page bare and completion rises while order value falls.

A team watching one number will keep making the other worse. Record both for two weeks before you touch the page, so you know which lever is the weak one.

Clear-Path Builders: what a good checkout does

The checkouts that convert well are not clever. They are free of surprises. We call the people who build them Clear-Path Builders.

They show the full cost early. Shipping and tax appear before the last step, not on it. The top reason for leaving is a total that jumped.

They let people buy as a guest. Offer an account after the purchase, when it is a convenience instead of a toll.

They keep reassurance in view. A secure-payment note, a way to order by phone, and the guarantee near the top and again by the button. Nearly one in five leavers did not trust the site with a card.

They ask for less. Every field is a small decision, and decisions wear people down, an effect known as decision fatigue. Remove any field you do not need to fulfil the order.

They place the add-on with care. An extra offer belongs where it does not sit between the buyer and the pay button: one checkbox, one line, near the end. A stack of offers and timers is a list of reasons to reconsider.

They keep it the same place. The checkout repeats the name, price, and promise from the page before. If the ad felt like one book and the checkout like another, the buyer is lost.

See ad-to-page alignment.

"I sell a service. I do not have a checkout."

You may take bookings or enquiries and think this is for shops. Your booking form is a checkout. The same things lose people.

A surprise at the last step. "We will call you to discuss pricing" after someone has filled in eight fields is a hidden cost.

Forced effort. A form that wants a company size, a budget, and a job title before it will show a calendar is a forced account.

No reassurance. Nothing saying what happens next, who will call, or whether there is any obligation.

So run the same diagnostic. Of the people who open the booking form, how many finish? And how many of those are worth a call?

Those are your two levers, and the trade between them is covered in qualify before the call.

Whatever you sell, keep one rule. Prices, fees, and terms must be stated truthfully. A checkout that hides a charge until the end is the leading cause of abandonment, and a fake countdown timer is a false claim.

What to read next, and why

The $300 Million Button (article by Jared Spool): The original account. Four minutes, and the best case ever made for watching real users.

Cart abandonment rate statistics (Baymard Institute): The averaged studies and the survey of reasons, updated regularly.

Decision fatigue (encyclopedia entry): Why each extra field and choice costs you buyers.

Advertising FAQs: A Guide for Small Business (FTC guide): The rules on stating prices and terms.

So the simple takeaway is this: buy your own product, or book your own call, on a phone. Write down every moment you hesitated. Each one is costing you customers.