What Is Post-Purchase Upsell? How It Works on Shopify

Quick Definition

Post-purchase upsell is an extra offer shown right after a customer pays, usually on a page before the thank you page. The buyer can add the item in one click without typing their payment details again. Since the first order's already paid, a no costs you nothing, and a yes raises the order's value.

Where the Offer Shows Up on Shopify

The buyer finishes checkout and pays. Then, before the thank you page loads, one offer appears. It shows a product, a price and a clear yes or no. A yes charges the item, and they don't have to type their payment details again. Say no, and they move on to the thank you page as usual.

On Shopify, you'll usually add this page with an app. Since the first order's already paid, a "no" never puts that sale at risk. That's the big difference from offers shown earlier, on the product page or in the cart.

Don't mix it up with the broader post-purchase stage. That stage is everything after the order, and a post-purchase upsell is just one offer inside it.

Example: An $80 Candle Order

A customer buys an $80 candle set. On the next page, they're offered a $20 refill pack at 10% off, which comes to $18.

Offer size: $18 ÷ $80 = 22.5% of the order. That's under the 25% rule in our guide to post-purchase upsells on Shopify, which also covers setup and downsells.
The pack costs you $6, so each yes earns $18 − $6 = $12 gross profit (price minus your cost, before payment fees).
Let's say 5 of every 100 buyers accept. You get 5 × $18 = $90 more revenue and 5 × $12 = $60 more gross profit.
Average order value goes from $80.00 to ($8,000 + $90) ÷ 100 = $80.90.

Ninety cents an order doesn't sound like much. But it comes from people you've already paid to bring in, with no extra ad spend.

Good Offers and Bad Ones

The best offers feel like the obvious next step, like refills, a matching accessory or a second one to give as a gift. The price should feel small next to what they just spent.

It backfires when:

The product has nothing to do with what they bought, so it feels like a random ad.
The page looks like a second checkout, and buyers think they're paying twice.
You stack offer after offer, and each one pushes back the thank you page.
You put a deep discount on a low-margin item. Revenue goes up, but profit goes down.

What Our Offer Data Shows

Our Shopify upsell apps compared page uses data from 250 stores and 66M offers (January to June 2026). In that data, post-purchase offers were accepted 6% of the time. Product page offers were accepted 7% of the time and cart drawer offers 12%.

That doesn't mean the placement causes the gap. Different stores used different placements with different offers, and it wasn't a controlled test. Use 6% as a rough reference point, not a target.

The Conversion Rate Mix-Up

A lot of store owners expect a post-purchase upsell to raise their conversion rate. It can't. Everyone who sees the offer has already bought. What changes is how much each buyer spends, so keep an eye on average order value and profit per order. And while a clumsy offer won't lose you the first sale, it can still cost you some trust.

How Growth Suite Handles Post-Purchase Upsells

Growth Suite, our app, includes Post-Purchase Upsell Funnels. Buyers accept with one click after checkout and don't need to enter payment details again. You can trigger a funnel based on the product bought, the order value or the number of items. A product selection algorithm helps pick what to offer.

Related Terms

One-Click Upsell: the one-tap accept that makes this offer easy to take.
Upsell Funnel: a chain of offers, like an upsell followed by a cheaper downsell.
Order Bump: an add-on shown at checkout, before payment.
Thank You Page: where buyers land after the offer.
Checkout Extensibility: Post-Purchase: how Shopify lets apps add a page after payment.
Average Order Value (AOV): the metric this offer moves.