Opportunity Cost & Time-Money Tradeoff Analyzer
Calculate opportunity cost by comparing alternatives with time and money costs for better decisions.
Worked Examples
Example 1: Hiring Decision: Contractor vs Employee
Problem: Need developer. Option A: Hire employee ($80K salary, 160 hours recruiting/onboarding). Option B: Contractor ($120K, 5 hours to hire). Your time worth $150/hour. What's cheaper?
Solution: Option A (Employee):\n- Money cost: $80,000/year\n- Time cost: 160 hours × $150 = $24,000\n- Total first-year cost: $104,000\n\nOption B (Contractor):\n- Money cost: $120,000/year\n- Time cost: 5 hours × $150 = $750\n- Total cost: $120,750\n\nDirect Comparison:\n- Option A: $104,000\n- Option B: $120,750\n- Savings: $16,750 (16% cheaper)\n\nOpportunity Cost Analysis:\nIf choose A over B:\n- Save: $16,750\n- Opportunity cost: None (A is cheaper)\n\nIf choose B over A:\n- Pay extra: $16,750\n- Opportunity cost: $16,750 foregone savings\n- But gain: 155 hours (160-5) of your time\n- Time value: 155 × $150 = $23,250\n- Net: $23,250 time saved - $16,750 extra cost = $6,500 net benefit\n\nVerdict:\n- Option B (contractor) is actually better\n- Costs $16,750 more but saves $23,250 in time\n- Net
Result: Contractor: $120,750 total | Employee: $104,000 total | But contractor saves 155 hours → Net $6,500 benefit
Frequently Asked Questions
What is opportunity cost?
Opportunity cost is the value of the next-best alternative you give up when making a choice. If you choose Option A over Option B, the opportunity cost is what you would have gained from Option B. Example: Invest $10K in stocks (Option A) vs. pay off 5% loan (Option B). Choose stocks. Opportunity cost = 5% guaranteed return you gave up. Not just financial—choosing to watch TV (Option A) has opportunity cost of learning new skill (Option B).
How do I value my time in dollars?
Methods: (1) Hourly salary (annual salary / 2,080 hours), (2) Freelance rate (what you'd earn for extra hour of work), (3) Opportunity value (what you give up—if you'd spend time with family, it's priceless; if you'd watch Netflix, $0). Professionals: $50-500/hour. Executives: $200-1,000/hour. Don't undervalue—time is finite. Use realistic rate: what would you need to be paid to work this extra hour?
What is the time-money tradeoff?
You can often trade money for time or vice versa. Fast shipping costs more. DIY saves money but costs time. The optimal choice depends on: (1) Your hourly value, (2) Time constraints (deadline), (3) Money constraints (budget), (4) Non-financial value (enjoyment, learning). Example: $500 to fly vs. $50 to drive (15 hours). If your time worth $50/hour, $500 to fly saves $750 - $50 = $700. If time worth $20/hour, driving saves $500 - $300 = $200.
How do I account for learning in opportunity cost?
Learning has future value. Example: Build website yourself (40 hours) vs. hire developer ($2,000). DIY costs 40 × $50 = $2,000 time + $0 money = $2,000 total. Hire costs $2,000. Equal financially. But DIY teaches skill—future websites cost less, you understand platform. Assign learning value: if skill worth $5,000 over career, DIY total value = $2,000 cost - $5,000 learning = -$3,000 (net gain). Hire = $2,000 cost - $0 learning = $2,000. Choose DIY.
What is sunk cost and how is it different?
Sunk cost is money already spent, unrecoverable. Opportunity cost is future-oriented (what you give up going forward). Sunk cost fallacy: continuing project because you've invested $10K already, even though stopping now would save future losses. Rational decision: Ignore sunk costs, consider only future costs and benefits. Example: Spent $5K on project, need $10K more to finish. Alternative: Stop now, invest $10K elsewhere. Choose based on $10K forward-looking opportunity cost, not $5K sunk cost.
What is opportunity cost of capital?
Money invested in one place can't be invested elsewhere. Example: Buy rental property (Option A, 5% return) vs. index fund (Option B, 8% return). Opportunity cost of real estate = 8% - 5% = 3%/year foregone. Use discount rate (expected return on next-best investment) to value money over time. $10K today with 5% opportunity cost = $10,500 in one year. Choosing option that delays $10K return costs $500 opportunity.