Gross Margin Payback Period Calculator
Gross-Margin Payback Period (GMPP) measures how long until acquisition cost is recovered from gross profit — not just revenue. It is the single most-cited CAC efficiency metric in 2026 SaaS investor decks.
Why Gross Margin Matters
CAC payback using revenue ignores cost of revenue (hosting, support, services). A company with $1000 ACV but 30% gross margin only generates $300/year in gross profit. Using revenue payback inflates apparent efficiency by 3-4x for low-margin SaaS.
Bessemer GMPP Benchmarks 2026
Top-quartile SaaS recovers CAC in under 12 months (gross-margin adjusted). Median is 18-24 months. Above 30 months requires a fundraising story or a margin expansion plan. Vertical SaaS often runs higher (24-30) due to longer enterprise cycles.
How To Compress Payback
Three highest-leverage moves: raise gross margin via infrastructure consolidation and pricing increases on commodity tiers, channel-shift CAC from outbound to product-led-growth (PLG), and prioritize larger ACV deals over volume to amortize fixed acquisition cost across more annual revenue.
Source: Bessemer Cloud 100 2025, OpenView SaaS Benchmarks 2025. Last updated: May 2026.