True profit on a project after direct costs and opportunity cost of time

Why Opportunity Cost Matters for Project Pricing

A project that makes 20,000 in direct profit sounds great — until you realize it took 500 hours at 40 per hour effective rate when your opportunity rate elsewhere is 75 per hour. The project lost you 17,500 in foregone alternative work. True profitability subtracts opportunity cost from direct profit to reveal whether the project was actually worth taking. Freelancers and agencies frequently accept projects that feel profitable but actually lose money once the hours could have been deployed differently.

Calculating Opportunity Cost Correctly

Opportunity hourly rate is what your time could have earned on the next-best alternative. For a freelancer with a backlog of 100/hour client work, opportunity rate is 100. For someone with no backlog, opportunity rate approaches zero — taking any project is better than idle time. For agency principals, opportunity rate might be 200-500/hour based on highest-value activities they could be doing instead. Setting this number honestly is the key to meaningful project evaluation.

Worked Example for Typical Project

Revenue 30,000. Direct costs 8,000. Hours 150. Opportunity rate 100. Direct profit 22,000. Gross margin 73%. Effective hourly rate 147. Opportunity cost 15,000. True profit 7,000. The project clears 7,000 after accounting for what the time could have earned elsewhere. Positive but modest — if opportunity rate were 150 instead of 100, true profit drops to -500 and the project is a slight loss. The calculator forces this evaluation before taking more similar work.

What the Calculator Does Not Model

Strategic value — some projects have value beyond immediate profit (portfolio pieces, relationship building, entry into new markets). Future referral value from completed work. Skill development during projects that raises future opportunity rates. Variable hour consumption — some projects grow from estimates. Client difficulty that affects true hour cost. The calculator gives clean math for direct comparison; strategic project decisions involve non-financial factors too.

Common Project Profit Mistakes

Not tracking actual hours — estimated hours are often 30-50% lower than realized hours. Ignoring admin, revision, and meeting time when counting project hours. Setting opportunity rate to market average rather than your own available alternative. Counting payroll of staff working on the project as direct cost when they would have been paid regardless. Taking projects with low true profit because they feel busy. The calculator quantifies the actual economics of specific project engagements.