Upselling + Cross-selling: Increasing Revenue From Existing Customers

Acquiring new customers is becoming increasingly expensive, which is why many e-commerce businesses are looking for ways to generate more revenue from existing shoppers. Upselling and cross-selling are two proven strategies that can increase sales without increasing traffic.

Whether you're recommending a premium product or suggesting complementary items, the goal is to provide additional value to customers. When done well, upselling and cross-selling can increase average order value, improve customer satisfaction, and support long-term business growth.

What are upselling and cross-selling?

Let’s define each term to understand what they mean and how they differ from each other.

What is upselling?

Upselling is the practice of encouraging customers to purchase a more premium version of the product they are already considering. The goal is to increase the value of the purchase by highlighting additional features and benefits that better meet the customer's needs.

Examples of upselling

Common examples include upgrading from a basic to a premium product model, moving to a higher-tier subscription plan, or adding an enhanced product package with extra features or services.

Source: KitchenTime

What is cross-selling?

Cross-selling involves recommending related products or services that complement a customer's intended purchase. Rather than replacing the original item, these recommendations enhance its value or usability.

Examples of cross-selling

Examples include suggesting a phone case alongside a smartphone, recommending matching clothing items, or offering extended warranties and installation services for larger purchases.

Source: Stamps4u

Recommended reading:
What is Down-selling? Examples and Strategies for Online Shops

Why upselling and cross-selling matter for e-commerce growth

Using similar approaches, both strategies aim to increase the value of each transaction while helping customers find the products that better suit their needs. When recommendations are relevant and well-timed, upselling and cross-selling can create a better shopping experience for customers while also generating higher revenues for retailers.

Increasing average order value (AOV)

One of the biggest benefits of upselling and cross-selling is the ability to increase average order value (AOV).

By encouraging customers to spend slightly more during each transaction, retailers can generate additional revenue from existing website traffic. This also helps maximise the return on investment (ROI) from marketing and advertising campaigns.

Improving customer lifetime value (CLV)

Effective product recommendations can also contribute to higher customer lifetime value (CLV). By helping shoppers discover products that better meet their needs, retailers can create more satisfying experiences that encourage repeat purchases and long-term loyalty.

Maximising revenue without increasing acquisition costs

Acquiring new customers often requires significant investment in advertising, content, and marketing activities.

Upselling and cross-selling focus instead on customers who are already engaged and ready to buy. As a result, these strategies can deliver additional revenue without the expense of attracting new visitors, making them a cost-effective revenue booster.

Recommended reading:
Customer Acquisition Cost: Decreasing CACs in Your Online Shop

Enhancing the customer experience

When implemented thoughtfully, upselling and cross-selling don't just benefit the retailer; they also benefit the customer.

Relevant product recommendations can help shoppers discover products, accessories, or services that improve their overall purchase. Rather than feeling like a sales tactic, the experience becomes a helpful form of guidance that makes shopping easier and more enjoyable.

The psychology behind successful upselling and cross-selling

Successful upselling and cross-selling aren't just about offering more products. They're about understanding how customers make purchasing decisions.

Relevance is everything

Customers are far more likely to respond positively to recommendations that genuinely meet their needs. An upsell or cross-sell should feel like a logical next step rather than a sales pitch. Irrelevant suggestions can quickly undermine trust and distract shoppers from completing their purchase.

Convenience drives conversions

Many customers appreciate guidance when making purchasing decisions. Relevant recommendations can help shoppers find suitable products faster, reducing the effort required to browse multiple pages or compare numerous options. By simplifying the buying journey, retailers can increase both customer satisfaction and conversion rates.

Think, for example, about promoting a spare battery for a professional camera. This theoretically reminds the user that they’ll probably need it, and also saves them the time of figuring out which battery is compatible with the camera already in their basket.

Proven upselling and cross-selling strategies for online retailers

Here are some of the best strategies for getting your shoppers to spend more.

Create product bundles

Product bundles combine related items into a single offer, making purchases feel more valuable and convenient. Bundling can increase average order values while helping customers find everything they need in one place, reducing the effort required to shop around.

Source: Photo Specialist

Use personalised recommendations

The most effective recommendations are tailored to individual customers. By using browsing behaviour, purchase history, or similar customer profiles, retailers can present relevant products at the moments they are most likely to be useful. Personalisation makes recommendations feel helpful rather than intrusive.

Recommended reading:
Personalising the E‑commerce Customer Journey

Offer premium alternatives

When upselling, focus on the additional value a premium option provides rather than simply highlighting a higher price. Explain the benefits, features, or long-term advantages that justify the upgrade.

Product comparison charts can be particularly effective, allowing customers to quickly understand the differences between standard and premium options and make informed decisions.

Source: Kelvin Power Tools

Use social proof to support recommendations

Customers are often influenced by the experiences of other shoppers. Product reviews and ratings can reinforce the value of recommended items, while labels such as "best seller" or "most popular" provide additional reassurance. Social proof helps reduce uncertainty and increases confidence in purchase decisions.

The best opportunities to upsell and cross-sell throughout the customer journey

Successful upselling and cross-selling depend not only on what you recommend, but also when you recommend it. The most effective retailers identify key moments throughout the customer journey where additional suggestions feel natural and helpful.

On product pages

Product pages are ideal for showcasing premium alternatives, comparison charts, and "Frequently bought together" recommendations. At this stage, customers are actively evaluating their options and may be open to discovering products that better suit their needs.

Source: Farrar & Tanner

In the shopping cart

Once a customer has committed to a purchase, the shopping cart becomes a valuable opportunity to suggest complementary products or low-cost add-ons.

Source: Alpine Trek

During checkout

The checkout should be used carefully, but it can still be effective for offering relevant upgrades. Although you won’t want to upsell different products here, you may want to promote your extra services, such as faster delivery, gift wrapping, extended warranties, or additional services. Simplicity is key to avoiding disrupting the purchase process.

After purchase

The customer journey doesn't end when the order is placed. Follow-up emails can recommend related products, replenishment items, or accessories based on the customer's purchase history. These recommendations often feel more relevant because they are tied to an existing order.

In the example below, NordVPN knows its subscribers are interested in internet security, so they send an email to customers upselling another product that promises you more privacy.

In customer service interactions

Customer service teams can uncover valuable opportunities by understanding customer needs and preferences. Whether through live chat, email, or phone support, personalised recommendations can solve customer problems while strengthening loyalty and increasing revenue.

How trust impacts upselling and cross-selling

Getting shoppers to trust your shop is hard enough, but asking them to spend more than they originally intended takes things up another level. Every upsell and cross-sell introduces an element of risk in the customer's mind. Trust helps reduce that risk.

Customer reviews provide social proof

Customer reviews are one of the most powerful trust-building tools available to online retailers. Verified product reviews help customers evaluate unfamiliar products and understand how they perform in real-world situations.

Positive feedback can reinforce the value of recommended products, while store reviews demonstrate overall reliability and customer satisfaction. Strong ratings can also make premium products appear more credible and justify a higher price point.

Try to make these ratings visible in all your upselling and cross-selling tools, from widgets to product comparison charts.

Other trust signals build confidence

Trust goes beyond customer reviews. What else can your shop do to build trust when upselling and cross-selling?

Trustmarks & Buyer Protection

Independent trustmarks signal that a retailer meets recognised standards for security, transparency, and customer service. These visual trust indicators can reduce hesitation at key decision-making moments, particularly when customers are considering upgrades or additional purchases.

To complement trustmarks, a good buyer protection provides an extra layer of reassurance. When customers know they are protected if something goes wrong, they are often more willing to accept upsell and cross-sell offers, especially for higher-value purchases.

Shops that earn the Trusted Shops Trustmark can offer their customers a 30-day Buyer Protection. Learn if your shop qualifies for the Trustmark:

Transparency throughout your website

Trust is also built through transparency. Clear pricing, delivery information, return policies, contact details, and accurate product descriptions help customers feel confident in their purchase decisions.

Transparent product comparisons can be particularly effective, allowing retailers to explain the benefits of premium options without appearing overly sales-focused.

Trust signals work best throughout the customer journey

Trust shouldn't be limited to a single page. Reviews, trustmarks, guarantees, and other trust signals should be visible throughout the customer journey. That means showing off your trustworthiness on your homepage, product pages, the shopping cart, the checkout page, and everything in between.

Combined with relevant recommendations, these trust elements can increase conversions while creating a better customer experience.

Recommended reading:
Boosting Trust in the Customer Journey to Improve Sales

Common upselling and cross-selling mistakes to avoid

When done correctly, upselling and cross-selling can improve both revenue and customer satisfaction. However, poorly executed recommendations can, at best, be ignored and, at worst, create frustration.

Recommending irrelevant products

One of the most common mistakes is showing products that have little connection to the customer's interests or intended purchase. Irrelevant recommendations can feel random and distracting, making customers less likely to engage with future suggestions. Focus on relevance and customer needs rather than simply promoting higher-priced products.

Being too aggressive

More recommendations do not always lead to more sales. Bombarding customers with pop-ups, upsell offers, and product suggestions at every stage of the buying journey can quickly become overwhelming. A cluttered and spammy shopping experience may lead customers to abandon their purchase altogether.

Prioritising revenue over customer needs

Successful upselling and cross-selling should create value for the customer, not just the retailer. Recommending upgrades that offer little benefit or encouraging unnecessary purchases may generate short-term gains, but they can damage customer loyalty and reduce repeat business over time.

Measuring the success of your upselling and cross-selling efforts

Implementing upselling and cross-selling strategies is only the first step. Like any e-commerce strategy, retailers should regularly measure performance and refine their approach based on data.

Shutterstock/EKKAPHAN CHIMPALEE

Key metrics to track

Several metrics can help determine whether your efforts are generating meaningful results. Average order value (AOV) reveals whether customers are spending more per transaction, while customer lifetime value (CLV) measures the long-term impact on customer relationships. Conversion rate and revenue per visitor can help identify how effectively recommendations are influencing purchasing decisions.

It's also important to track repeat purchase rates and the click-through rates of recommendation emails, product widgets, and other promotional placements. These metrics provide insight into both customer engagement and revenue potential.

Testing and optimisation

Even small changes can have a significant impact on performance. Regular A/B testing can help retailers identify which recommendations, placements, messaging, and designs generate the best results.

By continuously measuring, testing, and optimising, retailers can ensure their upselling and cross-selling strategies remain relevant, effective, and aligned with customer expectations.

Conclusion

Upselling and cross-selling are powerful ways to increase revenue without increasing customer acquisition costs. When recommendations are relevant, well-timed, and supported by trust signals, they can improve many revenue-focused KPIs. By prioritising customer needs, trust, and optimisation, you can convince customers to spend more and get more value from their purchases.