Sales Cycle Length vs CAC Payback Period
Sales cycle length measures the time from first contact to closed deal; CAC payback period measures the time from deal close to recovery of acquisition costs through gross profit. Together they reveal the total time from first touch to recouped investment — a key cash-flow driver.
At a Glance
Sales Cycle Length
Average number of days from first contact to closed deal
CAC Payback Period
Months required to recover customer acquisition costs
Key Differences
- Sales cycle ends at deal close; CAC payback begins at deal close and ends months later.
- Shorter sales cycles reduce CAC payback, since sales costs accumulate over the cycle.
- Enterprise deals have longer sales cycles but may have shorter CAC payback if ACV is high.
- Both metrics should be shortened to improve capital efficiency in growth-stage companies.
When to Use Each
Use Sales Cycle Length when…
Use sales cycle length to forecast pipeline timing, size sales headcount, and identify deal stages that are slowing conversion.
Full Sales Cycle Length guide →Use CAC Payback Period when…
Use CAC payback period to model working capital requirements and to evaluate whether acquisition costs are recoverable in a reasonable timeframe.
Full CAC Payback Period guide →Formulas
SALES CYCLE LENGTH
Sales Cycle Length = Sum of Days to Close All Deals / Number of Closed Deals
CAC PAYBACK PERIOD
CAC Payback Period = CAC / (Monthly ARPU × Gross Margin %)
CAC / Monthly Profit per CustomerCharts
Sales Cycle Length
CAC Payback Period