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Portfolio Over Time
Portfolio at Age 65
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$1,475,521
Growth Milestones
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The 7% Rule
The S&P 500 has averaged ~10% annually before inflation, ~7% after. Most financial planners use 7% for projections.
Start Earlier, Not Bigger
Starting 10 years earlier often beats doubling your contribution. Time is the most powerful variable.
Projections assume a fixed annual return. Actual market returns vary. Not financial advice — consult a fiduciary advisor.
Compound interest means you earn returns on both your original investment and all the returns you've already accumulated. For example, $10,000 at 10% annual return earns $1,000 in year one. In year two, you earn 10% on $11,000 — that's $1,100. Over decades, this compounding effect becomes dramatic. $10,000 invested at 10% for 30 years grows to over $174,000 without adding another dollar.
The S&P 500 has historically returned about 10% annually before inflation, or roughly 7% after inflation (real return). For a conservative long-term projection, most financial planners use 6–7% after inflation. For nominal (before-inflation) projections, 8–10% is commonly used. The actual future return is unknown — these are historical averages and past performance doesn't guarantee future results.
The standard rule of thumb is to save 15% of your gross income for retirement, including any employer match. If you start later, you need to save more. A common target: have 1x your salary saved by 30, 3x by 40, 6x by 50, and 8x by 60. These are guidelines — your actual need depends on your expected expenses in retirement and when you plan to retire.
The 4% rule states you can withdraw 4% of your portfolio in year one of retirement, then adjust for inflation each year, and have a high probability of your money lasting 30 years. On a $1 million portfolio, that's $40,000/year. This rule comes from historical research (the Trinity Study) and is widely used as a starting point, though some planners now suggest 3–3.5% for more conservative planning.
Research consistently shows that lump sum investing outperforms dollar-cost averaging (monthly contributions) about two-thirds of the time, because markets tend to go up over time and a lump sum benefits from more time in the market. However, if you don't have a lump sum, monthly contributions through dollar-cost averaging is far better than not investing. Consistency matters more than timing.
A Traditional IRA gives you a tax deduction now and you pay taxes when you withdraw in retirement. A Roth IRA gives you no deduction now, but withdrawals in retirement are completely tax-free. If you expect to be in a higher tax bracket in retirement than now, Roth is usually better. For 2025, you can contribute up to $7,000 per year to an IRA ($8,000 if 50 or older).