Retention Rate
CRM & RetentionAlso: Customer Retention Rate · CRR
Quick definition
Retention rate is the percentage of customers a business keeps over a defined period. Calculated as customers at the end of the period minus new customers, divided by customers at the start, expressed as a percentage. It is the direct inverse of churn rate.
Compare this to your own prior periods first. Trend direction matters more than the absolute figure. Pair with LTV to understand what each retained customer is worth over time.
How it varies across Australia
Retention rates vary considerably across Australian industries. Subscription software typically holds customers better than services or discretionary retail. The gap between good and average performers within the same category is usually wider than the gap between categories, which means your own trend is more useful than an industry median.
See retention patterns across Australian industries →What it actually means
Retention rate is the number that most businesses don't look at often enough, and the one that matters most to long-term economics.
The logic is simple. Every customer you keep costs almost nothing to acquire again. Every customer you lose has to be replaced at full acquisition cost. A business with strong retention can grow with modest acquisition spend. A business with weak retention has to run just to stay still.
The formula strips out new customers deliberately. If you added 50 new customers in a month and lost 50 existing ones, you didn't retain anyone. The formula makes that visible.
One number to be careful with: retention rate is period-dependent. Monthly retention of 95% compounded over a year is annual retention of roughly 54%. These aren't the same story and both numbers are accurate. Always state the period alongside the rate.
The inverse relationship with churn rate is exact. If your monthly retention rate is 92%, your monthly churn rate is 8%. Use whichever frame suits the conversation, but track both consistently.
Retention rate is the honest verdict on whether customers think you were worth it.
How to calculate it
Retention Rate = ((Customers at end - New customers acquired) ÷ Customers at start) × 100
Worked example. You started the quarter with 400 customers. You acquired 60 new ones. You ended with 410 customers. Retention Rate = ((410 - 60) ÷ 400) × 100 = (350 ÷ 400) × 100 = 87.5%. You retained 87.5% of the customers you started with, and lost 50.
The Australian context
Australian consumer behaviour around subscription and recurring services shifted markedly after the 2022 to 2024 cost-of-living increases. Businesses that had strong retention through the low-rate period saw faster erosion than their cohort models predicted. Retention rates calculated from a strong economic window should be stress-tested against a tighter one before being used in projections.
The Australian Competition and Consumer Commission (ACCC) has also increased scrutiny on subscription cancellation practices. Businesses that make cancellation difficult may be protecting short-term retention numbers at regulatory risk.
Where people get this wrong
Related terms
Common questions
What is a good retention rate for an Australian business?
It depends on your industry and pricing model. Subscription software tends to hold higher than services or retail. The more useful question is whether your retention rate is improving over time and whether it is high enough for your LTV to justify your CAC.
How is retention rate different from churn rate?
They are exact inverses. If retention rate is 88%, churn rate is 12%. Retention frames what you kept. Churn frames what you lost. Use whichever communicates better to your audience, but define the period clearly for either one.
Should I track retention by customer count or by revenue?
Both, ideally. Logo retention tells you how many customers stayed. Revenue retention tells you whether the ones who stayed spent more or less. A business losing its biggest accounts while keeping its smallest ones looks healthy on logo retention and isn't.
How often should I measure retention rate?
Monthly for any business with recurring or repeat revenue. Quarterly at minimum for transactional businesses. Annual-only tracking is too slow to catch emerging churn trends before they compound into a meaningful revenue problem.
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About New Rebellion
New Rebellion is a marketing intelligence consultancy. We build tools, score Australian businesses on how their marketing actually performs, and publish Debrief every day. This dictionary is part of how we work in the open.
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