Opportunity Cost of Early Retirement Calculator
How to Use This Calculator
- 1
Enter your current earnings and early-retirement period
Set Annual Salary Before Retirement ($) to your annual pay before retiring and Number of Years Early Retired (years) to how many years earlier you plan to stop working.
- 2
Add expected retirement income and savings
Enter Expected Annual Income After Retirement ($), Retirement Savings Accumulated ($), and any Additional Benefits or Costs ($). Positive additional amounts are added to the estimated cost in this calculator.
- 3
Review the assumed growth and income gap
The calculator assumes retirement savings grow at 6% annually. Review Net Opportunity Cost, Investment Growth on Savings, and Savings Coverage; the results do not model withdrawals from savings.
Example Calculation
A worker earning $90,000 retires five years early, expects $60,000 a year in retirement income, and has $500,000 saved, with $10,000 in additional costs.
Annual Salary Before Retirement ($)
90,000
Number of Years Early Retired (years)
5
Expected Annual Income After Retirement ($)
60,000
Retirement Savings Accumulated ($)
500,000
Additional Benefits or Costs ($)
10,000
Results
Net Opportunity Cost
-$8,911
Total Salary Foregone
$450,000
Total Retirement Income
$300,000
Annual Income Gap
$30,000
Investment Growth on Savings
$168,911
Savings Coverage
16.7 years
Insights card shows the income gap and projected savings growth.
Tips
At 6% growth, $500,000 gains about $168,911 over five years before withdrawals
Change Retirement Savings Accumulated ($) to $400,000 to reduce the modeled five-year growth to about $135,129. This is a growth assumption, not a withdrawal or sustainability forecast.
A $30,000 annual income gap uses $150,000 over five years before inflation
Change Expected Annual Income After Retirement ($) from $60,000 to $70,000. The annual gap falls from $30,000 to $20,000, and the savings coverage estimate rises from 16.7 to 25 years.
Additional costs increase the estimated opportunity cost dollar for dollar
Change Additional Benefits or Costs ($) from $10,000 to $0 to remove that $10,000 from the calculator's cost calculation. The field name includes benefits, but the formula adds the entered amount.
What this calculator estimates
The opportunity cost of early retirement is an estimate of income foregone by leaving work before your planned retirement date, adjusted here for retirement income, entered additional costs, and assumed investment growth. It is not a retirement-income plan: it does not project annual spending, withdrawals, taxes, inflation, or market fluctuations.
How the calculation works
Salary foregone = Annual salary × years retired early
Retirement income = Annual retirement income × years retired early
Income difference = Salary foregone − Retirement income
Opportunity cost before growth = Income difference + additional costs
Investment growth = Savings × ((1 + 0.06)^years − 1)
Net opportunity cost = Opportunity cost before growth − investment growth
Savings coverage = Savings / annual income gap
For the example, salary foregone is $90,000 × 5 = $450,000, while retirement income over those years is $60,000 × 5 = $300,000. Their difference is $150,000; adding $10,000 gives an opportunity cost before growth of $160,000.
The assumed five-year savings growth is $500,000 × (1.06^5 − 1) = $168,911.28. Subtracting that growth from $160,000 gives a net opportunity cost of −$8,911.28, displayed rounded to −$8,911. A negative result means the assumed growth exceeds the modeled income difference and entered costs; it does not prove the retirement plan is affordable.
How the assumptions affect the estimate
The table keeps salary, retirement income, and additional costs fixed while changing only the assumed annual investment return. The calculator itself uses 6%; the other rates are comparison scenarios.
| Assumed annual return | Five-year growth on $500,000 | Net opportunity cost |
|---|---|---|
| 3% | $79,637 | $80,363 |
| 6% | $168,911 | −$8,911 |
| 8% | $234,664 | −$74,664 |
The 6% rate is a fixed assumption, not a guaranteed return or a recommendation. A complete decision also needs a cash-flow plan that tests withdrawals in weak market years and accounts for healthcare, housing, taxes, and inflation. The Department of Labor's retirement savings information offers resources on retirement plans and saving.
Check income timing and benefit rules
Expected Annual Income After Retirement ($) is treated as annual income throughout the early-retirement period. If a pension, annuity, or Social Security benefit starts later, entering one average annual amount can hide years with different cash flows. Model each start date separately before making a decision.
Social Security timing is a separate issue from this calculator's income comparison. The SSA explains how claiming age affects retirement benefits; compare your own benefit estimates and eligibility rather than treating the calculator's annual income input as a confirmed benefit.
When to use a different calculator
- Model retirement timing, savings, and projected retirement income in more detail → early retirement calculator
- Compare the value of two uses of capital → opportunity cost of capital calculator
- Estimate a regular payment from an annuity → annuity calculator
- Estimate contributions and account growth in a workplace plan → 401(k) contribution calculator
- Compare early payoff of a debt with other uses for cash → auto loan early payoff calculator
Frequently Asked Questions
What is the opportunity cost of early retirement?
It is the projected financial difference between retiring earlier and continuing to earn a salary. This calculator compares foregone salary and retirement income, adds entered costs, and subtracts assumed investment growth on savings; it does not determine whether your assets can fund retirement.
How does the calculator estimate investment growth?
It applies a fixed 6% annual return to the starting retirement savings for each year of early retirement. For example, five-year growth is savings × (1.06^5 − 1); the estimate does not include withdrawals, fees, taxes, inflation, or changing returns.
Does Savings Coverage show how long my retirement savings will last?
No, Savings Coverage divides the starting savings by the annual income gap, so it is a simple coverage ratio rather than a withdrawal projection. It does not include investment returns, spending changes, taxes, or inflation during the coverage period.
When can I claim Social Security retirement benefits?
The earliest age for retirement benefits is generally 62, but claiming before full retirement age reduces the monthly benefit. Your personal amount and timing depend on your record and claiming age; use the Social Security Administration's retirement planner to review your options.
Will retiring early trigger a tax penalty on retirement account withdrawals?
It can, depending on the account, your age, the withdrawal type, and whether an exception applies. The calculator does not model tax or penalty costs; check the IRS guidance on retirement plan distributions before relying on an early-withdrawal estimate.