Customer churn is the leak almost nobody measures. You close a job, the customer is happy, and the next year, when they have another breakdown, they call someone else. There was no complaint and no bad experience: nobody simply kept the relationship alive. That silent leak, added up customer by customer, is one of the most expensive holes in a trades business.
This calculator puts a number on that hole. Adjust your figures above and you will see, in real time, how much churn costs you each year and how much you would gain by cutting it a few points.
How to read the results
- Revenue lost to churn per year is the big number: the money that leaks out through customers who stop buying from you, projected over twelve months.
- Customers lost/year turns that loss into something tangible: how many customers leave each year.
- Average customer lifespan is the inverse of churn. If you lose 20% a year, an average customer stays five years; if you lose 33%, only three. The higher the churn, the shorter the life.
- Extra customers kept, extra revenue, and extra profit show what you gain if you cut churn by the points you entered.
Why retention beats acquisition
Winning a new customer costs money: advertising, sales time, and a first job on thin margin. A retained customer, by contrast, already knows you, trusts you, and comes back without you having to sell again. The classic research from Bain & Company, led by Frederick Reichheld, popularised two ideas the trade has confirmed over and over: keeping a customer costs several times less than winning a new one, and raising retention by just 5% can lift profit by 25% to 95%. The reason is arithmetic: the retained customer invoices year after year on an acquisition cost that is already paid.
How to reduce churn in a home-service business
You do not cut churn with a one-off discount; you cut it with an aftercare system that keeps the relationship alive. In practice it is four touches repeated over time:
- Active aftercare. A call or message after the job to confirm everything works turns a transaction into a relationship. The customer remembers that you cared.
- Maintenance plan. An annual plan with a scheduled service gives a reason to come back every year and turns one-off revenue into predictable recurring revenue.
- Timely reminders. Flagging the annual service or filter change before the customer remembers keeps you in contact without being intrusive.
- Fast response when they return. When a loyal customer needs you again, answering instantly keeps them from trying a competitor.
The operations page explains how to systematise aftercare so it does not depend on your memory, and the conversion page how to present the maintenance plan so the customer sees value rather than cost. The customer aftercare and repeat revenue guide lays out the full system.
What to do with the number
If the annual figure surprised you, the next step is not to spend more on acquisition but to plug the leak you already have. First calculate how much recurring revenue a maintenance plan could generate, explore the rest of the tools to size other leaks in your business, and to review the cost with your real data on the table, talk to us.