GTM ModelARR BandMedian Magic NumberTop QuartileSales Efficiency RatioRating
Product-Led Growth (PLG) — structurally lowest CAC, highest efficiency ratios
PLGUnder $1M1.22.40.70Efficient
PLG$1M–$5M1.42.80.82Efficient
PLG$5M–$20M1.63.20.90Highly Efficient
PLG$20M–$50M1.52.80.85Highly Efficient
PLG$50M–$100M1.42.60.80Efficient
PLG$100M+1.32.40.75Efficient
Sales-Led (outbound / field) — higher CAC, efficiency builds with scale
Sales-LedUnder $1M0.51.00.30Building
Sales-Led$1M–$5M0.71.40.42Building
Sales-Led$5M–$20M0.81.60.48Target: >0.75
Sales-Led$20M–$50M0.91.80.54Solid
Sales-Led$50M–$100M1.02.00.60Healthy
Sales-Led$100M+1.12.20.65Mature + Efficient
Hybrid (PLG + Sales) — captures PLG efficiency while adding enterprise ACV
Hybrid (PLG + Sales)$1M–$5M1.02.00.62Efficient
Hybrid (PLG + Sales)$5M–$20M1.22.20.70Efficient
Hybrid (PLG + Sales)$20M–$50M1.32.40.75Efficient
Hybrid (PLG + Sales)$50M–$100M1.42.60.80Highly Efficient
Hybrid (PLG + Sales)$100M+1.32.50.78Efficient
Channel / Partner-Led — highest leverage ratios; partners absorb S&M cost
Channel / Partner-Led$5M–$20M1.42.60.80High Leverage
Channel / Partner-Led$20M–$50M1.63.00.88High Leverage
Channel / Partner-Led$50M–$100M1.83.40.95High Leverage
Channel / Partner-Led$100M+1.73.20.92High Leverage
Sources: OpenView SaaS Benchmarks 2024, Bessemer State of the Cloud 2024, Redpoint SaaS Metrics 2024. Magic Number = (Net New ARR × 4) / Prior Quarter S&M Spend. Sales Efficiency Ratio = New ARR / S&M Spend.

Magic Number decision thresholds

Below 0.5: stop increasing S&M spend — fix funnel or ICP first. 0.5–0.75: invest cautiously. 0.75–1.5: healthy — invest more aggressively. Above 1.5: you're leaving growth on the table. PLG companies outperform sales-led at every ARR band because product-qualified leads compress the S&M denominator. Channel-led models achieve the highest ratios because partner organizations absorb selling cost while the vendor captures ARR.
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