Customer loyalty and profitability: how loyalty programs grow sales when used strategically

Customer loyalty is one of the most powerful levers a business can pull. But to turn loyalty into bigger profits, you need to use it strategically.

Most businesses know that loyal customers tend to buy more, stay longer, and refer others. What’s less obvious is this: without a clear link between loyalty and value, it’s easy to build loyalty programs that reward the wrong behaviors.

In this article, we’ll look at how loyalty really drives growth, and what separates effective loyalty strategies from the ones that quietly burn money.

Loyalty doesn’t always equal profit

Loyalty is attractive to shoppers, and brings with it a wide range of benefits for brands. Retention is cheaper than acquisition, and loyal customers usually:

• make repeat purchases without the cost of new customer campaigns
• trust your brand more, so they convert faster
• engage more with upsells, subscriptions, or long-term offers

Done right, this means lower CAC (customer acquisition cost), higher CLV (customer lifetime value), and more stable revenue.

But not all loyal customers are profitable.

A study published by Harvard Business Review found that half of the customers considered “loyal” — those who made regular purchases over two years — barely generated a profit. Meanwhile, half of the most profitable customers weren’t loyal at all. They made a few high-margin purchases, then disappeared.

The problem here is with the definition of “loyalty”. We tend to think of someone who buys from a brand more than once over a certain timescale as “loyal”, but that doesn’t necessarily make them profitable.

To drive profitability, businesses need a sharper, more nuanced understanding of what loyalty really means.

Loyalty drives higher sales and greater profitability when you have strong margins and low servicing costs

Customer loyalty is most profitable when certain conditions are met. You need:

• strong margins: customers are buying products that leave room for profit.
• low servicing costs: repeat customers don’t require expensive support.
• “deeper” behavior over time: customers adopt new features, upgrade plans, or refer others.
• greater returns than you’re giving out in rewards: you’re not giving away more than you gain.

Ultimately, loyalty is profitable when the customer lifetime value (CLV) of retained customers is high.

CLV is calculated by taking the total amount a customer spends with you and subtracting the cost of acquiring that customer.

To really increase profits through customer loyalty, understand which customer behaviors to incentivize

Customers can be unprofitable for many reasons, depending on a brand’s business model and the nature of the products they sell.

Here are common issues — and examples of businesses that struggle with each.

Low average order value

Average order value (AOV) is the average amount a customer spends each time they buy.

If AOV is too low, it’s hard to cover marketing and servicing costs, no matter how often customers return.

Example:

A fast-fashion retailer with low-cost items might have lots of loyal customers — but if each checkout only totals $10–$15, margins stay tight and profitability suffers.

How loyalty programs can help:

Reward customers for bundling purchases or upgrading to premium lines.

Low purchase frequency

Some businesses rely on regular, repeated purchases to stay profitable. If customers don’t buy often enough, revenue flattens.

Example:

A coffee subscription service might lose money on customers who only order every few months, despite offering a great value on each order.

How loyalty programs can help:

Use points expiration, personalized reminders, bonus rewards for consecutive months of purchases, or an exciting subscribers-only tier with unique rewards, to build habit.

High churn

When customers leave quickly, the cost of acquisition and onboarding isn’t recouped. High churn kills profitability even if initial sales are strong.

Example:

An online skincare brand might attract new customers with a first-purchase discount but struggle to retain them for repeat orders, especially if users don’t build a habit around replenishment.

How loyalty programs can help:

Create early loyalty incentives — like milestone rewards, replenishment perks, or the possibility of unlocking a reward on just their second purchase — to lock customers in before they drift away.

High acquisition costs

If it’s expensive to bring in new customers, you need those customers to stay, spend, and refer others. Otherwise, acquisition costs eat into profits fast.

Example:

A luxury cosmetics brand might spend heavily on influencer marketing to attract each new buyer — but if customers don’t return, CAC remains unsustainable.

How loyalty programs can help:

Encourage first-time buyers to enroll in loyalty programs immediately, increasing the chance of repeat purchases without additional ad spend.

Low referral rate

If loyal customers aren’t spreading the word, the business loses one of the cheapest and most powerful acquisition channels.

Example:

A niche fitness app might have loyal users, but if they’re not recommending it to friends, growth stalls and CAC stays high.

How loyalty programs can help:

Offer referral bonuses tied to generous loyalty rewards — not just discounts — so loyal customers are incentivized to bring in more of the right kind of new users.

High service costs

If it costs a lot to serve each customer — through support calls, customizations, or complaints — profits shrink even when customers stay loyal.

Example:

An online electronics retailer might face frequent support requests about setups and returns, eroding margins thanks to the volume of calls and churn rates when problems can’t be resolved.

How loyalty programs can help:

Incentivize low-touch behavior with loyalty points, like using self-service help centers, or for helping others in support forums. Also, enabling support agents to give individuals loyalty points can help smooth over tricky situations and prevent the customer from churning.

Choosing the right type of loyalty program to drive profitable behavior

The structure of your loyalty program shapes the behaviors it encourages.

Common models include:

• Points-based programs: Customers earn points per purchase to redeem for rewards. This is effective for boosting purchase frequency and AOV, but needs careful margin management.
  
• Tiered programs: Customers unlock better benefits as they spend more. Useful for incentivizing high-value behavior and building emotional attachment.
  
• Paid loyalty programs: Customers pay for membership upfront (e.g., Amazon Prime). Drives strong engagement and long-term retention — but only works if the value is obvious and ongoing.
  
• Value-alignment programs: Programs that reward actions aligned with shared values (e.g., donations, sustainability initiatives). Build emotional and values-based loyalty.
  

Choosing the right model depends on diagnosing what behavior you most need to encourage:
more purchases, bigger baskets, referrals, longer-term retention — or all of the above.

The best programs often blend elements of multiple models, layering simple transactional rewards with opportunities for deeper connection.

Types of customer loyalty: why understanding motivation matters

Not all loyalty is the same. How and why customers stay loyal shapes the kind of value they bring — and what it costs to keep them.

The main types of loyalty include:

• Transactional loyalty: Customers stick around because of tangible rewards like points, discounts, or freebies. This kind of loyalty is easy to stimulate but often fragile, and customers may switch brands for a better deal.
  
• Emotional loyalty: Customers return because they feel a personal connection to the brand, through experiences, relationships, or trust built over time. Emotional loyalty is stickier and can drive higher margins, but it can be difficult to build.
  
• Values-based loyalty: Customers stay loyal because the brand’s values align with their own. This kind of loyalty often survives pricing or convenience challenges because it taps into identity.

Emarsys’s Customer Loyalty Index 2024 found that most forms of loyalty had fluctuated over time. Incentivized loyalty, for example, went from 45% (2021) to 56% (2022) to 48% (2023) to 50% (2024).

But ethical loyalty has increased steadily year-on-year, from 24% (2021) to 26% (2022) to 28% (2023) to 30% (2024).

The same report found that 34% of shoppers have switched to a different brand because of that brand’s sustainability practices — up from 21% just a year ago. 

It all means that “stickier” forms of loyalty are on the rise. Brands that know how to build it can have a great opportunity.

The best loyalty programs rely on a mixture of loyalty types.

Transactional loyalty lifts short-term sales, increasing average order values and purchase frequency. 

Emotional and values-based loyalty drive longer-term profitability by reducing churn, improving margins, and boosting advocacy.

How to build a more profitable loyalty base

Loyalty segmentation turns retention into growth

Loyalty can look very different across your customer base. Some customers buy often, but only low-margin items. Some buy rarely, but spend big. Some refer others. Some rack up support tickets.

Loyalty segmentation means grouping customers by behavior and value. Key factors include:

• frequency and recency of purchase
• average order value and product margin
• responsiveness to offers or perks
• cost to serve
• referral activity

This lets you:

• avoid over-investing in low-margin loyalty
• tailor rewards to different kinds of profitable behavior
• identify segments with hidden value (like referrers or seasonal high spenders)

Profitability matrices help you target loyalty efforts more effectively

A simple profitability matrix can help sort customers into four groups:

• High loyalty, high profitability: the customers to double down on
• High loyalty, low profitability: look for upsell or efficiency opportunities
• Low loyalty, high profitability: worth winning back or serving passively
• Low loyalty, low profitability: don’t invest more than necessary

This kind of mapping helps make loyalty programs more surgical. You stop spending evenly and start spending effectively.

Projected loyalty gives you a forward view of value

Loyalty programs often rely on past behavior. But past loyalty doesn’t always predict future value.

That’s why it’s useful to track projected loyalty — a forecast of how valuable a customer is likely to be. Good signals include:

• growing basket sizes
• interest in premium products
• referrals of high-value customers
• strong satisfaction scores

Projected loyalty helps you invest in future value, not just past behavior.

Real-world examples: Starbucks, Sephora, Amazon

Starbucks Rewards drives more than half of U.S. revenue

By 2022, Starbucks Rewards members accounted for 53% of U.S. company-operated revenue.

These customers visit more often. One report found app users were 5.6x more likely to visit daily, and 71% visited weekly.

The rewards program is embedded in the customer experience: payment, perks, personalization. It doesn’t just retain customers. It changes behavior.

Sephora Beauty Insider increases both spend and engagement

Sephora’s Beauty Insider program has 25+ million members globally.

It uses tiers to encourage higher spend. That works: one study linked the program to a 22% increase in engagement conversion rates.

It rewards customers in a way that also rewards the business.

Amazon Prime turns loyalty into habit

Amazon Prime now has 200+ million members.

Prime customers spend more — around $1,500 per year, compared to $625 for non-members.

Prime doesn’t just keep people loyal. It rewires their shopping habits around Amazon.

Profitable loyalty is designed, not accidental

Customer loyalty can absolutely drive sales and profitability. But it has to be built on the right foundations.

• Reward the behaviors that lead to profit
• Segment customers based on value, not volume
• Design rewards programs that shape future behavior, not just reflect past behavior
• Track how loyalty affects both retention and acquisition

Loyalty is a powerful tool. But like any tool, it works best when you know what you’re trying to build.

Smart loyalty design isn’t optional anymore. It’s the difference between flat repeat purchases and long-term profitable growth.

Ready to turn repeat customers into profitable ones? 

Make the most of your loyal customers, and the benefits can be huge: better profit margins, higher revenue per customer, and less reliance on expensive acquisition channels.

And it all starts with finding the right loyalty partner. If you’d like to find out how LoyaltyLion can help you, book a demo.