Retirement Calculator
Plan your retirement by projecting savings growth, choosing different methodologies, adjusting for taxes, and stress-testing under multiple economic scenarios.
Retirement Methodology
Personal Timeline
Income & Contributions
Retirement Cash Flows
Planning Assumptions
These planning assumptions form the mathematical basis for compounding, inflation drag, and depletion analysis. Modify them below to stress-test your plan.
Explanation: The average annual investment return rate expected during your working years.
Impact: Higher pre-retirement returns exponentially boost your nest egg before retirement.
Explanation: The average annual investment return rate expected in retirement (typically more conservative).
Impact: Higher post-retirement returns reduce the size of the starting nest egg required to sustain spending.
Explanation: The average long-term inflation rate (CPI). Historical average is ~2.5% - 3%.
Impact: Higher inflation increases future spending needs, forcing a much larger required nest egg.
Explanation: Your expected average annual career raise rate.
Impact: Higher salary growth increases future monthly additions and employer 401(k) matching.
Explanation: The initial percentage of the portfolio drawn down in year one of retirement (e.g. Bengen 4% Rule).
Impact: Lower rates (3% - 4%) protect against early depletion, while higher rates (>5%) raise depletion risk.
Explanation: The age you want to ensure your portfolio lasts until.
Impact: Longer planning horizons require a significantly larger nest egg to support more years of drawdown.
Try to increase your monthly retirement savings to reach at least 10% to 15% of your gross annual salary.
Your annual savings rate is below the standard 10% benchmark of your salary.
| Scenario | Profile | Projected Retirement Nest Egg |
|---|---|---|
Base Scenario | Default inputs and growth assumptions | Survives past 90 |
Conservative | Lower yield, higher inflation, haircuts | Depletes at age 74 |
Optimistic | Favorable yield, lower inflation, growth | Survives past 90 |
Stress Test | Severe economic crash and high inflation | Depletes at age 67 |
Readiness Scorecard
- Long compounding horizon (25+ years)
- High employer matching contributions
- Safe/conservative annual withdrawal rate
All core elements optimized!
Dynamic What-If Engine
Click Apply to inject the modified scenario directly into the active calculation parameters:
Projected Nest Egg: $2,233,202.00 (+$271,734.00)
Portfolio Longevity: Survives past age 90
Projected Nest Egg: $2,282,049.00 (+$320,581.00)
Portfolio Longevity: Survives past age 92
Projected Nest Egg: $1,961,468.00 (no change)
Portfolio Longevity: Survives past age 90
Projected Nest Egg: $2,566,841.00 (+$605,373.00)
Portfolio Longevity: Survives past age 90
Retirement Risk Framework
A dynamic risk analysis evaluated against your current timeline, inflation rates, and cash-flow specifications:
Inflation at 2.5% reduces purchasing power. A $60,000 budget will feel like $32,363.44 in 25 years.
Your portfolio is projected to last past your life expectancy of 90.
A pre-retirement return of 7% dropping to 5% post-retirement exposes you to cash-flow sensitivity if a market drop occurs early.
Your chosen withdrawal rate of 4% exceeds the historical 4% safe threshold, raising depletion risk.
Retiring at age 65 provides a standard decumulation timeline.
How to Use the Retirement Calculator
Determine whether you are on track for a secure retirement. This planner projects your retirement savings balance through the accumulation phase and calculates the target nest egg required to sustain your desired lifestyle, identifying any savings shortfalls or surpluses.
- Scenario Mode: Bounded parameter in the mathematical model.
- Planning Methodology: Bounded parameter in the mathematical model.
- Income Replacement Ratio (%): Bounded parameter in the mathematical model.
- Custom Target Nest Egg ($): Bounded parameter in the mathematical model.
- Current Age: Bounded parameter in the mathematical model.
- Target Retirement Age: Bounded parameter in the mathematical model.
- Life Expectancy: Bounded parameter in the mathematical model.
- Current Annual Salary ($): Bounded parameter in the mathematical model.
- Current Retirement Savings ($): Bounded parameter in the mathematical model.
- Monthly Savings Additions ($): Bounded parameter in the mathematical model.
- Annual Salary Growth (%): Bounded parameter in the mathematical model.
- Employer 401(k) Match (%): Bounded parameter in the mathematical model.
- Pre-Retirement Annual Return (%): Bounded parameter in the mathematical model.
- Post-Retirement Annual Return (%): Bounded parameter in the mathematical model.
- Expected Inflation Rate (%): Bounded parameter in the mathematical model.
- Effective Tax Rate (%): Bounded parameter in the mathematical model.
- Desired Retirement Income ($/year): Bounded parameter in the mathematical model.
- Annual Social Security Benefits ($): Bounded parameter in the mathematical model.
- Annual Pension / Other Income ($): Bounded parameter in the mathematical model.
- Annual Withdrawal Rate (%): Bounded parameter in the mathematical model.
Retirement Planning Guide: Math & Wealth Projections
Explore the mathematics of retirement planning, compound portfolio accumulation, inflation adjustment, and sustainable withdrawal rates.
Read Full Guide →Retirement Savings & Nest Egg Planning: Formula & Worked Example
Learn the mathematics of retirement planning. We explain savings accumulation, inflation adjustments, and how to calculate your target retirement nest egg.
Read Full Guide →Retirement Decumulation Planner: Discrete Recurrence & Longevity Math
Master discrete recurrence drawdown modeling, inflation-adjusted spending trajectories, and longevity risk protection in retirement.
Read Full Guide →What is a retirement shortfall?
A shortfall occurs when your projected savings at retirement age are lower than the target nest egg needed to sustain your desired annual withdrawals through your retirement years.
How does inflation affect my retirement plan?
Inflation increases the cost of goods over time. This tool adjusts your desired retirement spending upward by the inflation rate each year, so your estimated future withdrawals maintain the same purchasing power.
What is the standard safe withdrawal rate?
The historical benchmark is the 4% rule (derived from the Trinity Study), which suggests you can withdraw 4% of your initial retirement portfolio value in the first year and adjust for inflation thereafter with a very low risk of running out of money.
Evaluate safe withdrawal rates, dynamic guardrails, and portfolio longevity during retirement. Compare the 4% rule against Guyton-Klinger and constant percentage strategies.
Savings Goal CalculatorCalculate how to achieve your specific savings goals, whether solving for required monthly deposits or the time needed.
FIRE CalculatorProject your timeline to Financial Independence and Early Retirement (FIRE), comparing Lean, Fat, Coast, and Barista FIRE benchmarks.
Retirement PlannerComplete retirement modeling. Project your nest egg through the accumulation phase and simulate tax, inflation, and drawdowns in decumulation.