Retirement calculator
Use this retirement calculator to compare savings rates, time horizons, assumed returns, and retirement withdrawals while recognizing that taxes, inflation, market performance, and personal expenses can change.
Projected balance in 30 years
- Total contributed
- $266,000
- Investment growth
- $871,807
- Annual income at 4%
- $45,512
- Monthly income at 4%
- $3,793
- Projected balance in 30 years
- $1,137,807
See if you're really on track for retirement
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The short answer
This calculator projects the balance you could reach by your target retirement age, based on what you have saved today, what you add each month and the return you assume. It then applies a 4% withdrawal rate to estimate the annual income that balance might support.
The 4% starting point
The 4% figure comes from research into historical US portfolios: withdrawing 4% of the starting balance, adjusted for inflation, survived most 30-year retirement windows. It is a planning yardstick, not a guarantee, and it assumes a diversified portfolio and a fixed horizon.
Contributions beat timing
Raising a monthly contribution from $500 to $700 over 25 years at 7% adds well over $150,000 to the projection. Most people have more control over the contribution line than over the return line, so that is where the effort belongs.
Adjust for inflation
A projected balance is in future dollars. If you want today's purchasing power, subtract expected inflation from your return assumption — for example use 4% instead of 7% — and read the result as real money.
How a Retirement Calculator Helps You Plan Decades Ahead
A retirement calculator takes your current savings, expected contributions, and anticipated expenses to estimate whether you'll have enough money when you stop working. These tools process variables like inflation, investment growth assumptions, Social Security benefits, and life expectancy.
Enter accurate numbers for current balances in each account: 401k, IRA, taxable brokerage, and savings accounts.
Use conservative growth rates—historical averages don't guarantee future results—typically 5-7% nominal annual returns before inflation.
Include all income sources: Social Security, pension payments, rental income, part-time work, and annuity distributions.
Adjust retirement age and spending estimates to see how small changes affect your projected account balance over time.
Understanding Full Retirement Age for Social Security Benefits
What is full retirement age? It's the age when you qualify for 100% of your Social Security benefit based on your earnings record.
Full retirement age determines your baseline Social Security benefit; claiming earlier or later adjusts this amount permanently.
Each month you claim before full retirement age reduces benefits by approximately 0.5-0.6% depending on your birth year.
Delaying past full retirement age increases benefits by 8% per year until age 70, when increases stop.
Spousal and survivor benefits also depend on full retirement age calculations, affecting household retirement income strategies.
Building Your Retirement Plan Around Multiple Income Sources
How to save for retirement starts with understanding the tools available. A 401k plan lets you contribute pre-tax dollars through payroll deduction, often with employer matching contributions up to 3-6% of salary.
Employer 401k matching is immediate return on investment; contribute at least enough to capture the full match amount.
IRAs supplement workplace plans; choose traditional for current tax deduction or Roth for tax-free withdrawals after age 59½.
Pension payments continue for life regardless of market conditions, providing stable income that reduces withdrawal needs from savings.
Annuities trade account flexibility for guaranteed income, useful for covering essential expenses if investment returns disappoint later.
Calculating Required Savings Using Real Examples
Assume you want $60,000 annual spending in retirement. Social Security provides $24,000 yearly.
The 4% rule provides a starting withdrawal rate; adjust based on actual expenses, market performance, and remaining life expectancy.
Monthly contributions matter more than lump sums early in your career due to decades of compound growth on regular deposits.
Target 10-15 times your final salary in total retirement savings, varying by pension coverage and expected Social Security benefits.
Run calculations annually and after major life changes—marriage, home purchase, job change—to keep retirement planning on track.
Testing Different Scenarios to Stress-Test Your Plan
A retirement calculator becomes most valuable when you model multiple scenarios. Test retiring at 62, 65, and 67 to see how each affects required savings and account longevity.
Model retiring three years earlier and later than your target age to quantify the financial impact of timing decisions.
Test spending scenarios 20% above and below your baseline estimate to understand margin for error in your projections.
Simulate a market crash in your first retirement year to see if your portfolio recovers or depletes prematurely under withdrawals.
Adjust one variable at a time—savings rate, returns, retirement age—to isolate which factors most influence your outcome.
The formula
Balance = current savings × (1 + r/12)^N + monthly × [((1 + r/12)^N − 1) ÷ (r/12)], where N = months to retirement. Estimated income = balance × 4%.
FAQ
What the retirement calculator can estimate
A retirement savings calculator projects how current savings and future contributions might grow under a chosen return assumption. It can also estimate a potential retirement balance or test how long a balance may support planned withdrawals. Because actual investment returns vary, compare several scenarios instead of treating one result as certain. Include workplace accounts such as a 401k, individual accounts, taxable investments, and any pension benefits that apply.
Effective retirement planning also considers inflation, taxes, health expenses, debt, and the timing of Social Security or pension income. Full retirement age is a Social Security term and is not necessarily the age when someone must stop working. An annuity may create a contractual income stream, but fees, guarantees, liquidity restrictions, and insurer claims-paying ability depend on the specific product. Review assumptions regularly as income and expenses change.
Common questions
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