Retirement Calculator
Project retirement savings and required income for retirement
Input & options
Your inputs are never uploaded or stored.
Projection follows the original annual contribution and return model. Returns and inflation are assumptions you can change.
Results
Enter your values to see the result.
About Retirement Calculator
Our free retirement calculator helps you project how much money you will have saved by retirement and whether your savings can support your desired lifestyle. A 25-year-old can see what a yearly contribution increase adds by 65, and someone five years out can check whether the current balance covers the income they want in today's dollars. Enter your current age, savings, monthly contributions, and expected rates of return to get a year-by-year projection.
The calculator uses compound interest with escalating contributions to model the accumulation phase of your retirement savings. It accounts for annual increases in your contributions -- reflecting salary raises and growing saving capacity -- and provides an inflation-adjusted analysis using the real rate of return. This ensures the retirement income projections reflect actual purchasing power, not just nominal dollar amounts.
With a detailed year-by-year accumulation table, milestone tracking for key savings thresholds, and a surplus or shortfall analysis against your desired retirement income, this tool gives you everything you need to plan confidently. Nothing you enter is ever sent to a server.
Key Features
- Compound Growth Projection: Models year-by-year savings growth with compound interest and annual contributions to project your total retirement nest egg
- Escalating Contributions: Accounts for annual percentage increases in contributions, reflecting salary raises and growing saving capacity over your career
- Inflation-Adjusted Income Analysis: Uses the real rate of return (nominal return minus inflation) to calculate how much monthly income your savings can actually support in todays dollars
- Surplus or Shortfall Indicator: Compares your projected savings against the nest egg required for your desired retirement income, clearly showing whether you are ahead or behind your goal
- Year-by-Year Accumulation Table: Displays a detailed breakdown of annual contributions, interest earned, and running balance for every year until retirement
- Milestone Tracking: Highlights when your savings cross key thresholds such as $100K, $500K, $1M, and beyond, giving you motivating goals to watch for
- Customizable Assumptions: Adjust the expected return rate, inflation rate, retirement duration, and contribution growth to model different scenarios and stress-test your plan
- Instant Results: All calculations are performed instantly with zero delay
- Privacy First: Nothing you enter is stored or sent anywhere; your financial figures stay on your device
How to Use the Retirement Calculator
- Enter your current age: This is your starting point for the retirement projection timeline.
- Set your target retirement age: The default is 65, but you can adjust this to model early or delayed retirement scenarios.
- Input your current savings: Enter the total amount you have already saved for retirement across all accounts (401k, IRA, brokerage, etc.).
- Set your monthly contribution: Enter how much you contribute to retirement savings each month, including any employer matches.
- Adjust the annual contribution increase: If you expect your contributions to grow over time due to raises or increased saving, set a percentage here (e.g., 3% per year).
- Set return and inflation rates: The defaults of 7% return and 3% inflation represent historical averages for a balanced stock portfolio. Adjust these based on your investment strategy and outlook.
- Enter your desired monthly retirement income: This is the amount you want to withdraw each month during retirement. Leave blank if you just want to see what your savings can provide.
- Set retirement duration: How many years you expect to be in retirement. The default is 25 years.
- Click Calculate: Review your projected savings, income analysis, milestones, and detailed year-by-year breakdown.
Understanding the Math
The accumulation phase models your savings growth year by year. Each year, your existing balance earns interest at the expected annual return rate, and your annual contribution is added. If you set an annual contribution increase, the contribution amount grows by that percentage each year, simulating the effect of salary raises.
The real rate of return is calculated as: Real Return = (1 + Nominal Return) / (1 + Inflation) - 1. For example, with a 7% nominal return and 3% inflation, the real return is approximately 3.88%. This is used to determine how much inflation-adjusted income your savings can sustain.
The required nest egg is calculated using the present value of an annuity formula: PV = PMT x [(1 - (1 + r)^(-n)) / r], where PMT is the desired annual retirement income, r is the real rate of return, and n is the number of retirement years. This tells you the lump sum needed at retirement to fund your desired income for the specified duration, accounting for continued investment growth during retirement.
The supportable monthly income reverses this formula to determine the maximum annual withdrawal from your projected savings: PMT = PV x r / (1 - (1 + r)^(-n)), then divided by 12 for the monthly figure. This represents what your nest egg can actually provide while lasting through your entire retirement.
Use Cases
- Early Career Planning: Determine how much to save monthly starting in your 20s or 30s to reach a comfortable retirement by age 65, and see the powerful effect of starting early with compound growth.
- Mid-Career Assessment: Check whether your current savings rate is on track to meet your retirement income goals, and see how increasing your contributions can close any gap.
- Pre-Retirement Validation: If you are within 5-10 years of retirement, verify that your accumulated savings will sustain your desired lifestyle through a 20-30 year retirement.
- Early Retirement (FIRE) Planning: Model aggressive savings scenarios with higher contribution rates to determine the earliest age at which you can achieve financial independence.
- Scenario Comparison: Run multiple calculations with different return rates, contribution levels, and retirement ages to see how changes in assumptions affect your outcome.
- Raise Impact Analysis: Use the annual contribution increase feature to model how annual salary raises translate into faster retirement savings growth over decades.
- Inflation Stress Testing: Adjust the inflation rate to see how higher or lower inflation environments affect your real retirement income and required savings.
- Retirement Income Budgeting: Use the supportable monthly income figure to plan your retirement budget and understand what lifestyle your savings can sustain.
Frequently Asked Questions
What return rate should I use?
The default 7% represents the historical average annual return of a diversified stock portfolio after adjusting for typical investment fees. If your portfolio is more conservative (heavy in bonds), use 4-5%. For aggressive stock-heavy portfolios, 8-10% may be appropriate. Remember that past performance does not guarantee future results.
Why does inflation matter?
Inflation erodes purchasing power over time. A dollar today buys more than a dollar 30 years from now. The calculator uses the real return rate (nominal return minus inflation) to show your retirement income in terms of todays purchasing power. This gives you a realistic picture of what your savings can actually buy when you retire.
What is the annual contribution increase for?
Most people earn more as their career progresses. The annual contribution increase setting lets you model growing contributions over time. For example, if you expect 3% annual raises and plan to save a consistent percentage of your salary, set this to 3%. This makes your projection much more realistic than assuming flat contributions.
How is the required nest egg calculated?
The required nest egg uses the present value of an annuity formula, which calculates the lump sum needed to provide a fixed annual income for a specified number of years, assuming the remaining balance continues to earn the real rate of return. This is the same math financial planners use to determine retirement readiness.
Does this account for Social Security or pensions?
This calculator focuses on personal retirement savings. To account for Social Security or pension income, subtract those expected monthly amounts from your desired monthly retirement income before entering it. For example, if you want $5,000/month total and expect $2,000/month from Social Security, enter $3,000 as your desired income.
Is 25 years a good default for retirement duration?
If you retire at 65, a 25-year retirement takes you to age 90, which is a reasonable planning horizon. However, if you have a family history of longevity or want extra safety margin, consider using 30-35 years. For early retirees, increase this to cover the full expected retirement period.
Tips for Retirement Planning
- Start as early as possible: The power of compound interest means that even small contributions in your 20s can grow dramatically by retirement. Starting 10 years earlier can nearly double your final savings.
- Maximize employer matches: If your employer offers a 401(k) match, always contribute enough to get the full match -- it is essentially free money that immediately doubles part of your contribution.
- Increase contributions with raises: Each time you get a raise, increase your monthly contribution. Even allocating half of each raise to retirement savings can significantly accelerate your progress without reducing your take-home pay.
- Diversify your investments: Spread your retirement savings across different asset classes (stocks, bonds, international, real estate) to balance growth potential with risk management.
- Run multiple scenarios: Do not rely on a single projection. Calculate with optimistic (9% return, 2% inflation), moderate (7% return, 3% inflation), and conservative (5% return, 4% inflation) assumptions to understand the range of outcomes.
- Revisit your plan annually: Your circumstances change over time. Recalculate at least once a year with updated savings balances and contribution levels to stay on track.
- Consider tax-advantaged accounts: Maximize contributions to 401(k), IRA, and Roth accounts before investing in taxable accounts. The tax savings compound significantly over decades.
- Plan for healthcare costs: Medical expenses are one of the largest retirement costs. Factor in health insurance premiums and potential long-term care needs when setting your desired retirement income.