Enter your current customer base and the investment you're considering. We'll model the retained revenue, ROI multiple, and payback period from a realistic churn-reduction outcome — the numbers a CFO will actually engage with.
Six inputs. Built around the math finance teams actually use.
Updates instantly as you type.
Enter your customer count, ARPU, current churn, planned investment, and expected churn reduction to see your ROI.
Customer lifetime value is the upstream number that anchors the ROI math. Run the CLV Calculator to see your per-customer lifetime value before modeling the investment.
Use the CLV Calculator →This calculator uses the standard retention-ROI framework that CFOs typically engage with in customer service investment conversations.
Step 1: Compute current annual losses.
Step 2: Compute projected annual losses after the investment.
Step 3: Customers retained per year.
Step 4: Annual revenue retained.
Step 5: ROI multiple.
If margin is left blank, the calculator uses revenue (not margin) for ROI — which overstates the actual return. Most CFO conversations want the margin-based version.
Step 6: 3-year retained revenue.
The model assumes churn reduction is sustained — meaning each retained cohort continues paying in subsequent years. The retained customers from year 1 still generate revenue in years 2 and 3 (themselves subject to ongoing churn).
Payback period.
For the full operational and financial framework, see How to Build the Business Case for Customer Service and What Is Customer Lifetime Value (CLV)?
What this calculator does not model:
All four would push the calculated ROI higher. This model gives you a deliberately conservative baseline — the number you can defend in a CFO meeting without needing to argue every assumption.
The math gets you the room. Building the case that actually gets approved — and the implementation plan that delivers the projected churn reduction — is where most operations need help.