When Can You Retire If You Start Saving Today?
At what age can you actually afford to stop working?
When Can You Retire?
Enter your current savings, contributions, and retirement needs to find your exact retirement date, projected portfolio, and monthly income. Results update live as you type.
Your Retirement Inputs
Results are estimates only and do not constitute financial, tax, or legal advice. Always consult a qualified professional before making financial decisions.
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The most important variable in retirement planning is not how much you save — it is when you start. Starting at 25 versus 35 can move your retirement date by 7-10 years even at identical savings rates, because of the compounding runway that early contributions enjoy. This calculator models your retirement date from your current age, current savings, income, and the monthly contribution you start making today. It applies inflation-adjusted return assumptions, models Social Security income at different claiming ages, and tests your plan against the 4% safe withdrawal rule and Monte Carlo probability analysis. The output is not just a retirement age — it is a full projection showing your portfolio value at every age, the monthly income your savings would support in retirement, and the specific actions that would move your retirement date the most. It also shows three scenarios: if you start today, if you wait one year, and if you increase contributions by a moderate amount.
- →You want to know your earliest possible retirement date based on current savings and income
- →You are starting to save for retirement and want to see the impact of starting now versus later
- →You want to compare how different savings rates affect your retirement date
- →You are mid-career and want to know whether you are on track to retire at your target age
- →You want to model the impact of Social Security on your retirement date and income
- →You are evaluating whether to increase contributions now or spend more today
Rachel, 32, has $24,000 saved, earns $78,000/year, and starts saving $650/month today (10% of gross). The calculator projects her portfolio reaching her 25x annual expenses ($1.875M) at age 63. If she increases to $900/month (13.8%), she retires at 60. If she waits a full year to start, she retires at 64. The one-year delay costs her 1 year of retirement — and 1 year of compounding on every dollar she would have saved in that year.
- ✕Using nominal rather than inflation-adjusted return rates — 7% nominal is only 5% real at 2% inflation
- ✕Not including Social Security in the calculation — it can reduce required savings by 20-35% for middle earners
- ✕Assuming a fixed return rate rather than a range — Monte Carlo analysis shows the realistic spread of outcomes
- ✕Not accounting for healthcare costs in early retirement before Medicare eligibility at 65
- ✕Underestimating retirement expenses — most planners recommend 80-90% of pre-retirement income as the starting assumption
What savings rate do I need to retire at 65?
Starting at age 30 with no current savings, a 15% savings rate on the median income of $62,000 ($775/month) at a 7% real return allows retirement at approximately age 65 with a 25x savings multiple (the 4% rule portfolio). Starting earlier reduces the required rate: at 25, the same target requires only 10-11%. Starting later requires significantly higher rates — at 40, reaching the same retirement age requires 25-30% savings rates.
What does the 4% rule mean for retirement planning?
The 4% rule (Bengen 1994, Trinity Study) states that withdrawing 4% of your portfolio annually in the first year of retirement, then adjusting for inflation, has historically provided a 95%+ probability of your portfolio lasting 30 years. To retire comfortably, you generally need 25 times your annual retirement expenses saved (1/0.04 = 25). This calculator uses the 4% rule as the primary benchmark while also showing 3% and 3.5% withdrawal scenarios for more conservative planning.
Does this calculator include Social Security?
Yes. You can enter your estimated Social Security benefit (or let the calculator estimate it from your income using SSA benefit formulas), and specify the age at which you plan to claim. Claiming at 62 provides 70% of full benefit; claiming at 70 provides 124% of full benefit. Social Security income can meaningfully reduce the portfolio size you need and pull your retirement date earlier.
What return rate does the calculator assume?
The default is 7% nominal annual return (approximately 5% after 2% inflation), consistent with long-run US stock market returns net of inflation. You can adjust this from 4% to 10% to model conservative, moderate, or optimistic scenarios. The Monte Carlo analysis in the advanced tab runs 500 simulations with variable returns to show the probability distribution of retirement dates and portfolio outcomes.
What if I already have savings — does the calculator account for them?
Yes. Enter your current savings balance and the calculator compounds it forward from today alongside your new contributions. Existing savings often have a larger impact on retirement date than new contributions for mid-career savers because they have longer to compound. For example, $100,000 already saved at 40 with 7% returns becomes approximately $386,000 by age 60 with no additional contributions.