Cross-selling: what it is, examples and how to apply it
FLYDE Glossary · November 9, 2026 · 4 min read
Cross-selling means offering a customer products or services that complement what they already buy or are buying. It is one of the most profitable ways to raise average order value and the value of each customer.
Cross-selling examples
- Electronics: the case, charger or extended warranty with the phone.
- Fashion: the belt or shoes that go with the trousers.
- Optics: spare contact lenses or cleaning solution for someone who bought glasses a month ago.
- Banking and insurance: home insurance for someone who has just signed a mortgage.
- Restaurants: the drink or dessert with the meal.
Cross-selling and upselling
| Cross-selling | Upselling | |
|---|---|---|
| What you offer | A different, complementary product | A higher version of the same product |
| Example | A case with the phone | The phone with more storage |
| Effect | More products per order | Higher price per product |
See also upselling.
How to spot cross-selling opportunities
- Basket analysis: which products appear together on the same ticket more often than you would expect.
- Purchase sequences: what a customer buys weeks or months after a given product. Cross-selling does not have to happen in the same order.
- Gaps per customer: categories that similar customers buy and this customer does not yet.
Where to activate it
On the product page and in the basket, in the post-purchase email or message, in the in-store recommendation and in advertising audiences. It works better when it is relevant to that customer than when everyone is shown the best sellers.
Metrics to track
- Average order value and products per order.
- Recommendation acceptance rate.
- Number of categories per customer over the year, closely tied to retention.
- Incremental sales, measured with a control group: some of those purchases would have happened anyway.
Cross-selling in FLYDE
With in-store and online purchase history unified per customer, FLYDE shows which products and categories are bought together or in sequence, and lets you build audiences of customers with a clear category gap to activate in email, advertising or in store. With a control group you measure what each action really sells.
Frequently asked questions
What is cross-selling? Offering a customer products that complement what they already buy or are buying, such as a case with a phone.
What is the difference between cross-selling and upselling? Cross-selling offers a different, complementary product; upselling, a higher or more complete version of the same product. The first increases products per order and the second price per product.
How do you measure cross-selling success? With average order value, products per order, recommendation acceptance rate and, above all, incremental sales against a control group that does not receive the recommendation.
Does cross-selling only happen at checkout? No. Many of the best opportunities come later: the refill, the top-up or the add-on the customer will need weeks later.