growthunhinged.com · 2026-04-23 · 42d

Your guide to CAC payback period

CAC payback period is a critical but frequently misunderstood SaaS metric that should be tailored to business model rather than applied universally. The article demonstrates that companies combining low CAC payback with high net dollar retention achieve superior growth rates (200% median) and Rule of 40 scores (63% median), and warns against common calculation errors and the false belief that sales & marketing spend alone drives customer acquisition costs.

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Metrics in this report

CAC Payback Period

11months

target

Micro-businesses (≤20 employees) — Good (50th percentile)

CAC Payback Period

5months

target

Micro-businesses (≤20 employees) — Great (75th percentile)

CAC Payback Period

11months

target

SMBs (20-100 employees) — Good (50th percentile)

CAC Payback Period

5months

target

SMBs (20-100 employees) — Great (75th percentile)

CAC Payback Period

14months

target

Mid-market (101-1,000 employees) — Good (50th percentile)

CAC Payback Period

8months

target

Mid-market (101-1,000 employees) — Great (75th percentile)

CAC Payback Period

14months

target

Enterprise (1,000+ employees) — Good (50th percentile)

CAC Payback Period

11months

target

Enterprise (1,000+ employees) — Great (75th percentile)

Growth Rate

200percent

median

Companies with great NDR and low CAC payback

Growth Rate

35percent

median

Companies that struggle on NDR and CAC payback

Growth Rate

58percent

median

Companies average on both NDR and CAC payback dimensions

Net Dollar Retention

110percent

best-in-class

Enterprise-focused SaaS companies

R&D to Sales & Marketing Ratio

2.43ratio

Atlassian (PLG company) — $2.43 R&D for every $1 S&M

Rule of 40

63percent

median

Companies with great NDR and low CAC payback

Rule of 40

0percent

median

Companies that struggle on NDR and CAC payback

Rule of 40

42percent

median

Companies average on both NDR and CAC payback dimensions

Sales & Marketing to R&D Ratio

2.15ratio

DocuSign — $2.15 S&M for every $1 R&D