SaaS Magic Number for Engineering Firms.
Sales efficiency: ARR added per dollar of S&M spend.
Engineering practices, engineered to scale.
Why engineering firms operators use the saas magic number.
Calculate the Magic Number — net new ARR ÷ prior-quarter sales & marketing spend. Above 1.0 = invest more aggressively. Below 0.5 = pull back.
Engineering firms — civil, structural, mechanical, electrical — are professional services businesses with unique constraints: project-based revenue, deep specialization, and complex stakeholder management. SAZ helps engineering firms scale revenue, productize services, and embed AI across project delivery.
What good looks like — typical ranges to compare against.
How saas magic number is calculated.
Magic = (Net New ARR × 4) ÷ (Prior Q S&M Spend × 4)What changes when saas magic number is applied to engineering firms.
Project-based revenue volatility
Productization of recurring services
Talent leverage and utilization
Document, drawing, and report production
Open the saas magic number.
Free, instant, no signup.
Want a senior partner to interpret your results?
Email info@Sedighi.ca or call (604) 632-4959. A senior partner responds within one business day.