What to Put Under the Add to Cart Button on Shopify
The four doubts a first-time buyer has at the buy button, and one short, true line for each: payment, safe checkout, shipping and returns.

The last few centimetres of the page
On a product page, the space directly under Add to cart is small, and it is read at the exact moment a shopper decides. Everything above it has done its work: the photos, the price, the description. What is left is a short pause with the thumb over the button, and in that pause a first-time buyer is not thinking about your product any more. They are thinking about you.
They have never ordered from your store. They do not know how you ship, whether you are real, or what happens if it goes wrong. Most of them will not write in to ask. They look around the button for an answer, and if there is none, the doubt usually wins and the tab closes.
That makes the few lines under the button some of the most valuable copy in your store. This post is about what to put there, and just as important, what to leave out.
Four doubts, in the order they arrive
The questions a new buyer has at the button are surprisingly consistent across products and markets. There are four:
- Can I pay the way I want to?
- Is it safe to pay here?
- When will it arrive, and what will shipping cost?
- What if it is wrong, or does not fit?
Each one deserves one short, true line. Not a paragraph and not a link to a policy page: one line that answers the question well enough for the shopper to keep going. The detail can live in your policies, where people who want it will find it.
Pay how: show it, then say the exceptions
The first doubt is mostly answered by payment icons, which have their own rules: show the methods your checkout accepts today and leave the rest off.
What icons cannot carry is a condition. If you take cash on delivery only in some areas, charge a fee for it, or accept a local wallet only above a certain amount, say so in words. “Cash on delivery inside the city” in one line saves a buyer from discovering the rule at checkout, which is the worst place to discover anything.
Is it safe: say what is actually true
This is the line most stores get wrong, because the easy version is a claim nobody can check: “100% secure”, “guaranteed safe checkout”, a padlock badge with a certification name that the store never earned.
Shoppers have seen those badges on every kind of site, including the ones they learned not to trust. A line that is specific and true does more:
- “Checkout handled by Shopify” says who processes the payment.
- “Your card details go to the payment provider, never to us” answers the fear behind the question, if that is how your store is set up.
- “Questions? We reply within one working day” tells them a person is behind the shop.
Pick the one that is true for your store and keep it plain. If you are not sure a sentence is accurate, leave it out. A missing reassurance costs less than a false one.
Shipping: a number and a condition
“Fast shipping” answers nothing. A shopper wants two facts: roughly when, and roughly how much. The best shipping line under the button has a number and, if there is one, a condition:
- “Free shipping over $50, otherwise $5”
- “Ships within 2 working days”
- “Delivered in 3–5 days inside the country”
If you already have a free shipping threshold, this is the second place it should appear after the top of the page (the free shipping threshold post covers choosing the number). The words should match your shipping policy exactly. If the line says three days and the policy says five, the buyer remembers the smaller number, and the order that arrives on day five becomes an email.
Returns: the window and who pays
The fourth doubt is about risk. A buyer who can send it back is buying something they can undo. The line needs two facts: how long they have, and whether it costs them anything.
- “30-day returns, free in the UK”
- “Exchange or refund within 14 days”
- “Final sale: no returns on this item”
The last one matters. If a product cannot be returned, the place to say it is next to the button, not in a policy nobody opens. It loses you a few hesitant buyers and saves you the far worse conversation with the customer who did not know. If your return terms are not settled yet, writing the return policy first makes this line easy.
Write all four, then cut
Draft the four lines, then edit them hard:
- One line each, short enough for a phone. If a line wraps twice on a small screen, it is a paragraph.
- Specific beats impressive. “Ships in 2 days” is better than “Lightning-fast delivery”, because the buyer can hold you to it, and that is the point.
- The same words as your policies. Copy the number from the policy, do not round it into something nicer.
- Skip what does not apply. A digital product does not need a shipping line. Three true lines are better than four with one filler.
- Let each line carry its own icon if you use any, so a shopper scanning down can find “returns” without reading every line.
Then look at the product page on your own phone. The Add to cart button should still be the first thing the eye finds; the lines sit under it, quieter, and the whole block should fit without a scroll.
What does not belong under the button
The space works because it is short. Things that dilute it:
- Seals and claims you cannot back up. Covered above, and worth repeating.
- Marketing copy. “Join thousands of happy customers” is not an answer to any of the four doubts, and if the number is not real it is a problem of its own.
- Long policy text. Link to it from the policy line if your theme allows, but keep the line itself to one sentence.
- Everything at once. If you also want to say the product is handmade, vegan or limited, that belongs in the description, close to the price. The block under the button is for the questions about buying from you.
When the lines stop being true
These lines are promises, and promises go stale. A carrier change makes “2 days” wrong. A new returns rule makes “free returns” wrong. Nobody will tell you; the line just quietly turns into the reason someone emails you, or files a dispute.
Make it a habit: whenever you change shipping rates, carriers, payment methods or return terms, open a product page the same day and read the lines under the button out loud.
Where we come in, briefly. Trust Badge is one of three blocks in Store Essentials, the free app we build at ShopAppsLab. It adds the payment methods your store actually accepts, and up to four short promises, under Add to cart — from the theme editor, with no code. There are no paid plans, and the app asks for no access to your store’s data. Everything above works without it — that is the honest version.
If you do one thing this week
Open your best-selling product page on your phone and cover everything except the area around Add to cart. Ask the four questions — pay how, safe, shipping, returns — and write down which ones the page answers right there. For each one it does not, write a single true line, check the number against your policy, and put it under the button.