Customer Churn, the Hidden Growth Killer: Keep Key Customers, Earn 5x

Contents

Why focus on existing customers? The 1:5 rule of customer relationship management
The 5:25 rule of thumb in marketing
7 main causes of customer churn
Better customer satisfaction drives higher revenue
What are customer churn rate and customer retention rate?

Internet traffic fragmentation means that, because smartphone users have different habits and use a wide variety of apps, online traffic is spread across many places.

Why focus on existing customers? The 1:5 rule of customer relationship management

Marketers have long held one important idea: winning a new customer usually costs far more than keeping an existing one. The most widely quoted point from the research of Frederick Reichheld and Bain & Company is this: “Acquiring a new customer costs five times as much as retaining an existing one! The ratio varies by industry, but cutting churn by just 5% can raise profits by 25%~85%.”

The “1:5 rule” in customer relationship management says that winning one new customer costs five times as much as keeping one existing customer. In marketing terms, if keeping an existing customer costs NT$100, acquiring a new one costs NT$500. Existing customers already know the brand, so compared with new customers who have never heard of it, they can be brought back for their next purchase with far less marketing spend.

The 1:5 rule tells us that new customers are expensive to win, while staying in touch with existing customers costs only a fifth as much. That is why it matters so much to invest in remarketing and turn new customers into repeat customers, not one-time buyers.

The 5:25 rule of thumb in marketing

A Harvard Business School report shows that keeping customer churn under 5% can raise company profits by 25%~95%. The 80/20 rule in economics also holds that 80% of a company’s future revenue comes from 20% of its existing customers, which means keeping existing customers matters as much as winning new ones.
Meanwhile, a Marketing Metrics survey found that selling to existing customers succeeds about 60%~70% of the time, while the close rate for new customers is only 5%~20%.

Crop unrecognizable woman carrying red shopping bags in studio

7 main causes of customer churn

Statistics show that a company with high customer churn may lose 59% of its sales revenue and see its acquisition costs rise by 36%. Churn clearly has an impact on profitability that cannot be ignored.

There are 7 main reasons customers leave:

Product defects or a change in product style

Products are the source of all revenue. If a product has serious defects and customers buy it, we lose their trust, and losing those customers is inevitable.

A sudden change in product style can also drive customers away. If a brand that used to be simple and understated adds lots of trendy elements such as lace and prints, the clothes may be fashionable, but existing customers may not like them and may stop buying.
Pushy selling and excessive pestering

Some customers know exactly what they want and don’t need an overly eager pitch. But frontline staff trying to close quickly may follow them around and keep selling. Customers feel pressured and see it as a hard sell; they become annoyed and end up rejecting the brand, not because of the product, but because of the person who served them.
Price increases

Many business owners overlook churn, especially when revenue looks stable or is growing. Focusing only on sales while ignoring a falling customer count is a common mistake. If a store raises prices but total sales stay flat or grow only slightly, the actual sales volume is falling. That decline should not be ignored, because surface-level growth can hide serious consequences. Over time, continued churn will eventually cause total sales to drop, and by the time owners notice, it may be too late.
Inconsistent quality that hurts customers

Stores chasing short-term profit may neglect the long term and let product quality slip. This may bring some gains in the short run, but it seriously damages the store’s reputation and customer loyalty. Customers leave because of poor quality, which hurts the store’s long-term growth. Stores should therefore take quality seriously, keep selling high-quality products, and build a strong brand image and customer trust to sustain stable, long-term business.
Lack of innovation, so customers look elsewhere

As markets develop, customers have more and more choices and are more likely to look for products or services that fit their needs. If a brand stops innovating and offers nothing new, customers may grow bored and look for more attractive options.

Brands therefore need to keep innovating, offering reasonably priced, high-quality, fresh and distinctive products or services that attract customers and keep them loyal.
Frontline staff with a weak service mindset

Staff who are impolite or impatient can make customers feel disrespected. Questions that go unanswered can make customers feel ignored and lower their satisfaction. Complaints that are not handled promptly deepen dissatisfaction and drive customers away. A curt tone in replies can also leave customers unhappy and hurt satisfaction.

The key to solving these problems is to strengthen staff’s service mindset, invest in training, and build a strong service culture, so that staff understand and meet customer needs accurately, work more efficiently, and reduce churn.
Customers tempted by competitors

When tempted by competitors, customers may consider switching to their products or services. Factors that may lead customers to defect include:

(1) Low-price promotions: Competitors may attract customers with discounted pricing.
(2) Advertising: Competitors may raise brand awareness through aggressive advertising and win customers over.
(3) Aggressive attacks by competitors: Competitors may run destructive marketing tactics, such as deep discounts or promotions, to attract customers and grab market share.
(4) Market position: Customers may switch based on a competitor’s market position and reputation.

In these situations, companies need to keep customers loyal by offering high-quality products and services, building strong customer relationships, and marketing actively.

Research shows that as long as businesses keep communicating with their customers, they can effectively prevent churn. Maintaining relationships at the front line is important, so even when there is nothing in particular to say, check in regularly with customers you haven’t heard from in a while.

Better customer satisfaction drives higher revenue

According to the customer satisfaction handbook of the American Marketing Association (AMA):

Every 100 satisfied customers bring in 25 new customers.\
For every customer complaint received, another 20 customers feel the same way and have the same problem.\
Acquiring a new customer costs 5 times as much as keeping a satisfied one.\
Winning a new customer takes 6-10 times more work than retaining an existing one.\
A 20% increase in customer satisfaction raises revenue by 40%.

These figures show how much satisfied customers matter to a business and how customer satisfaction affects business success. Research shows that as long as a brand keeps communicating with its customers, it can effectively prevent churn. Maintaining relationships is important, so even when there is nothing in particular to say, use marketing tools such as LINE, EDM and SMS to check in regularly with customers you haven’t heard from in a while.

What are customer churn rate and customer retention rate?

Customer churn rate: the main indicator of customer loss, reflecting the current state of a company’s operations and management.

Churn rate = customers lost / number of customers × 100%

Customer retention rate: reflects customer loyalty and is an important measure of business performance.

Retention rate = [(E-N)/S] x 100%

(S): number of customers at the start of the period
(E): total number of customers at the end of the period
(N): number of new customers added during the period

For example, if a company starts with 7,500 customers and ends with 9,500, but gained 6,250 customers during the period, its retention rate is 43.3%.

We usually use customer lifetime value (CLV) to measure what a customer is worth. For example, a customer who shops once a week on average and spends NT$500 each time spends NT$25,000 over 50 weeks a year. If they live in the area for 10 years, their lifetime value is NT$250,000. With a 20% profit margin, that customer generates NT$50,000 in profit. One dissatisfied customer can therefore mean the store loses NT$250,000 in business and NT$50,000 in profit.

Companies can also understand customer value by calculating the cost of churn. Suppose a company has 100,000 customers and, because of a service or product problem, loses 5% of them this year, or 5,000 customers. If average revenue per customer is NT$3,000, it loses NT$15 million in revenue; at a 20% margin, that is NT$3 million in lost profit.

Churn matters enormously. A 5% churn rate may look stable and healthy, yet many companies don’t understand or pay attention to the issue. Market research shows that about 10% to 30% of customers drift away each year, yet many companies don’t know which customers they lost, when, or why. As a result, they can’t see how churn affects revenue and profit, and simply keep chasing new customers.

Measuring customer retention is valuable to an organization because it gauges customer satisfaction and brings these benefits:

It drives repeat purchases and cross-selling.
It provides a quantitative measure of customer loyalty to compare or report.
A loyal customer is worth about 10 times their first purchase.
Higher retention increases revenue.
A falling retention rate can help reveal weaknesses in business strategy.
Retaining customers is faster and cheaper than acquiring new ones.

Today, a customer data platform (CDP) lets companies study and analyze churn, which is essential because it helps them head off crises and grow in a healthy way.

AIM from ESi Technology is an all-in-one LINE marketing platform. It offers solutions for running an engaging LINE presence and understanding your LINE friends, combined with in-depth data analysis, so you can gain friends more efficiently, avoid being blocked, and turn friends into paying customers.

By providing comprehensive, real-time, personalized data, a CDP helps companies adapt to the digital environment, improve operational efficiency, customer experience and competitiveness, and drive digital transformation.

Want to learn more about the customer data platform (CDP) and how to get started? Visit our website for more information.

Open up new channels for growth

See your members in full and build momentum for revenue growth.

Talk to an expert