Career & Growth · Free tool

CAC Payback Period Calculator

Months until CAC is recovered from margin-adjusted revenue. <12 months is great for SMB SaaS.

Updated April 2026

CAC ($)Avg monthly revenue / customer ($)Gross margin (%)

Payback period

16.2

months

Full recovery

1.35

years of gross profit

Tier

Good — acceptable mid-market

Healthy for mid-market SaaS. Monitor churn closely.

How the math works

Monthly revenue / customer: $99.00
Gross margin contribution (75.0%): $74.25 / mo
CAC / monthly contribution: 16.2 months

Shorter payback = faster capital recycling for growth investment.

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What it does

Short payback = faster capital recycling. SMB SaaS target <12 months; enterprise can support 24+. Here’s yours.

Runs entirely in your browser — no upload, no account, no watermark. For more tools in this category see the full tools index.

Embed this tool on your siteShow snippet

Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.

<iframe src="https://freetoolarena.com/embed/cac-payback-period" width="100%" height="720" frameborder="0" loading="lazy" title="CAC Payback Period Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>

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How to use it

Enter CAC + monthly revenue.
Enter margin %.
Read payback months.