A small improvement in customer retention can have a significant impact on profitability. That might sound obvious, but it's easy to overlook when you're focused on growth.

When we talk about growing a business, the conversation often starts with:

  • More leads
  • More enquiries
  • More advertising
  • More sales

All important, of course. But there's another question worth asking:

How many customers are quietly walking away?

That's customer churn. And unlike a lost sales opportunity, churn can be surprisingly easy to miss. A customer rarely sends an email saying:

"I'm leaving because I no longer feel connected to your business."

More often, they simply don't come back. The subscription isn't renewed, the next order isn't placed, the next appointment is booked somewhere else. And suddenly you're spending money trying to find a replacement for a customer you've already paid to acquire.

What is customer churn?

Customer churn is simply the rate at which customers stop buying from, subscribing to or using a business over a particular period. The exact way you measure it depends on your business.

For a subscription business, it might mean customers who cancel. For an ecommerce business, it might mean customers who haven't returned within a defined period. For a service business, it could mean customers who don't renew or book again.

There isn't one universal definition — which is why comparing your churn rate with another business's isn't always particularly useful. What matters is understanding your own pattern of customer churn.

There's no single "normal" churn rate

You'll often see articles quoting an average churn rate as though it applies to every business. It doesn't. Churn varies depending on what you sell, how frequently customers buy, your industry, contract length, business model and even how churn is measured.

A monthly software business and a wedding photographer aren't going to have the same retention pattern. So rather than obsessing over someone else's average, start with your own numbers.

If you have 1,000 customers and 50 leave during a given period, that's a 5% churn rate. Now put a monetary value against it: if those customers would each have been worth A$500 over the following year, that's A$25,000 in potential future revenue no longer coming through the door — and that's before you consider repeat purchases, referrals or the cost of finding replacements.

The cost of customer churn is bigger than the lost sale

Say a customer spends A$100 with you. It might be tempting to think that losing them means losing A$100. But what if they normally bought from you four times a year — and stayed for three years?

A$100

one order

A$400

in a year

A$1,200

over three years

And what if they would have recommended you to someone else?

The point isn't that every customer has some enormous hidden lifetime value. It's that the value of a customer isn't necessarily captured by their most recent transaction. That's why looking only at today's sales can make churn look smaller than it really is.

Churn can be a relationship problem, not just a sales problem

It's easy to think of retention as something that happens when a customer is about to leave. By then, you may already be playing catch-up. A better place to look is at the moments when customers are deciding what sort of relationship they have with your business: what happens after they purchase, how you interact with them between appointments, what you do before it's time to renew. These are all moments where a promo or discount can be useful — but often the best thing to do is simply make the customer feel welcomed and seen.

Retention starts with making customers feel valued

Customer experience research continues to point towards the importance of personalisation and understanding what customers need.

KPMG's 2025/26 UK Customer Experience Excellence research found that personalisation was the most influential of its six customer experience pillars, accounting for 20.1% of the overall weighting. The report also highlights the continuing importance of integrity, empathy and reducing customer effort.

That's useful context for small businesses, because personalisation doesn't have to mean building a complicated loyalty programme or a sophisticated customer journey. Sometimes it's as simple as remembering the name of a customer who pops in a couple of times a month — or checking in after important milestones. If they came to you for a wedding cake, a congratulations card is a totally unexpected but very welcome surprise and delight.

A small gesture can make a big difference

This is where something as simple as a handwritten note can have a role. Imagine becoming a new customer and, a few days later, receiving a handwritten welcome note. Or placing a larger order and receiving a personal thank-you. Or reaching the anniversary of your first purchase and receiving a note acknowledging it.

None of these things are complicated. But they communicate something quite different from another automated promotional email:

We noticed you.

That's not going to prevent every customer from churning — it shouldn't. But it can be one small way of making the relationship feel more personal. And that's particularly relevant when so much customer communication is automated, instant and designed to move on to the next message.

Retention doesn't have to mean another loyalty scheme

When businesses think about retention, they often jump straight to points, discounts and loyalty programmes — and sometimes that's exactly the ticket to repeat purchases. But retention can also be much simpler. The goal isn't to give customers more marketing to ignore. It's to give them more reasons to remember why they chose you in the first place.

The best retention strategy starts before churn

You don't — and can't — need to eliminate every bit of churn. Some customers will leave. Businesses change, circumstances change, people move on. But if you're losing customers simply because the relationship went quiet and they drifted to a competitor, that's a different problem — and it's one worth looking at.

Start by working out where customers tend to disappear, and look at what happens before they leave. Speak to customers who have churned and, where appropriate, try to find out why. Then look for the moments where a better experience might have changed the relationship.

A handwritten touchpoint can be one small part of that strategy. Because sometimes retention starts with something remarkably simple: making a customer feel like more than a number.

A little more human

Penned helps businesses send personalised handwritten letters, notes and cards at scale, using real pens, real paper and genuine handwriting styles. Every piece is individually created and quality checked before it's posted.

So instead of asking your team to sit down and handwrite hundreds of customer messages, you can build handwritten touchpoints into your retention strategy without losing the feeling of something personal.

You type. We write.

Sources

The research referenced in this article includes: