2. Calculate Customer Lifetime Value (CLV)
CLV is perhaps the most important metric for identifying profitable customers. It represents the total revenue you can expect from a customer throughout your business relationship.
A basic formula for calculating CLV:
CLV = Average Purchase Value × Average Purchase Frequency × Average Customer Lifespan
For example, if a customer spends an average of £100 per purchase, buys from you 4 times a year, and remains a customer for 3 years, their CLV would be £1,200.
Practical tip: For SMEs without advanced analytics tools, even a simplified CLV calculation can provide valuable insights. Focus on comparing customers relative to each other rather than achieving perfect accuracy.
3. Measure Repeat Purchase Rates
Loyal customers are those who keep coming back. Calculate your repeat purchase rate by dividing the number of customers who have purchased more than once by your total number of customers.
Then, dig deeper to identify individual customers with the highest repeat purchase rates:
- Track how quickly customers return after their first purchase
- Note which customers have maintained consistent purchasing patterns over extended periods
- Identify customers who continue buying even without promotions or discounts
Practical tip: Set up a simple flagging system in your CRM or sales database to highlight customers who have purchased from you three or more times.
4. Analyse Profitability Per Customer
Not all sales contribute equally to your bottom line. Some customers may generate high revenue but also incur high servicing costs.
To determine true profitability:
- Calculate the gross margin on products or services each customer typically purchases
- Estimate the cost of serving each customer (customer service time, shipping costs, returns, etc.)
- Subtract these costs from the revenue generated to find the actual profit per customer
Practical tip: Create customer segments based on profitability tiers. This allows you to develop appropriate strategies for each group.
5. Track Referral Activity
Loyal customers often become brand advocates. Monitor:
- Customers who have directly referred others to your business
- Those who regularly engage with and share your content on social media
- Customers who leave positive reviews or testimonials
Practical tip: Implement a simple referral tracking system, even if it’s just asking new customers, “How did you hear about us?” and recording the information.
6. Analyse Customer Feedback and Engagement
Loyal customers typically provide more feedback and engage more deeply with your brand:
- Review survey responses and identify customers who consistently provide thoughtful feedback
- Track engagement with your email newsletters (opens, clicks, responses)
- Note customers who participate in your events or webinars
- Monitor social media interactions with your brand
Practical tip: Create an engagement score for each customer based on these activities to help identify your most invested customers.
7. Implement RFM Analysis
RFM (Recency, Frequency, Monetary) analysis is a powerful method for SMEs to segment customers:
- Recency: How recently did the customer purchase?
- Frequency: How often do they purchase?
- Monetary: How much do they spend?
Assign scores for each category (typically 1-5) and combine them to create customer segments.
Practical example: A customer who purchased last week (5 points), buys monthly (4 points), and spends above your average (4 points) would score 13/15, placing them in your “champions” segment.
8. Look for Low-Maintenance Customers
Sometimes the most profitable customers aren’t those who spend the most but those who require the least support:
- Track support tickets or service calls per customer
- Monitor return rates and complaint frequency
- Note customers who follow your processes without requiring exceptions
Practical tip: Calculate a “maintenance ratio” by dividing customer service costs by revenue generated for each customer.
9. Use Your CRM Effectively
If you have a Customer Relationship Management system, leverage it to:
- Set up automated reports that highlight your top customers based on custom criteria
- Track customer interactions across multiple touchpoints
- Record personal preferences and relationship history
- Set alerts for changes in purchasing patterns
Practical tip: Even a basic CRM can be powerful. If you don’t have one, start with a simple spreadsheet that tracks key customer metrics.
10. Conduct Regular Customer Reviews
Schedule quarterly reviews of your customer base:
- Identify customers whose value has increased over time
- Note customers who may be at risk of churning based on changing patterns
- Recognise emerging high-value customers who deserve more attention
Practical tip: Create a simple dashboard with your top 20% of customers highlighted, and review it monthly to track changes.