Rule of 40 Calculator for Engineering Firms.
The SaaS health metric every board uses.
Engineering practices, engineered to scale.
Why engineering firms operators use the rule of 40 calculator.
A SaaS company should have revenue growth rate + operating margin ≥ 40%. Below 40%, the business is consuming value to grow.
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 rule of 40 calculator is calculated.
Rule of 40 = Revenue Growth Rate + Operating MarginWhat changes when rule of 40 calculator is applied to engineering firms.
Project-based revenue volatility
Productization of recurring services
Talent leverage and utilization
Document, drawing, and report production
Open the rule of 40 calculator.
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.