If you have a target retirement age circled on your calendar, you may be planning around the wrong metric. According to finance expert Dave Ramsey, retirement readiness is not determined by hitting 60, 65, or any other birthday milestone. What matters is whether you have accumulated enough invested assets to generate the income you need for the rest of your life.
The critical question is not “Am I old enough to retire?” but rather “Do I have enough money to retire?” Your investment account balance, not your age, determines when you can afford to stop working. Here is how to calculate your personal financial number.
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Three Methods to Calculate Your Retirement Number
Method 1: The Precise Budget Approach
This method delivers the most accurate result but requires detailed planning. Start by estimating your annual retirement spending, then subtract guaranteed income sources like Social Security to find your true income gap.
For example, if you need $60,000 annually and expect $25,000 from Social Security, your portfolio must generate $35,000 per year. The 4% rule, a widely accepted guideline, holds that you can withdraw 4% of your portfolio in year one and then adjust for inflation each subsequent year. Multiply your income gap by 25 to get your target: $35,000 x 25 = $875,000 needed.
The 4% rule works because historical data shows this withdrawal rate has sustained portfolios through 30-year retirement periods. That said, the rule’s inflation-adjustment feature is doing heavier lifting in today’s environment: the Consumer Price Index rose 4.2% year-over-year through May 2026, its fastest pace since April 2023, driven largely by an energy price surge. With inflation running that hot, retirees who underestimate spending growth risk depleting their nest egg ahead of schedule. Equity exposure still matters for long-term growth, with the S&P 500 posting a one-year total return of roughly 27% through mid-June 2026, while 10-year Treasury yields at approximately 4.38% continue to generate meaningful income on the bond side of a portfolio.
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Method 2: Income Replacement Ratio
If retirement is years away and pinning down exact expenses feels impossible, a reasonable shortcut is to plan for 70% to 90% of your pre-retirement income. Someone earning $50,000 who targets a 90% replacement would need $45,000 annually. Subtract projected Social Security income, then multiply the remaining gap by 25 to arrive at a nest-egg target.
Method 3: The 10x Rule
The simplest benchmark of all: multiply your final working salary by 10. A worker earning $100,000 at retirement should target a $1 million portfolio. This rule of thumb is less precise than a full budget analysis, but it gives younger savers a concrete number to orient around early in their careers, when every year of compound growth counts most.
Which Method Should You Use?
Your life stage drives the answer. Workers within five years of retirement should use the precise budget approach for maximum accuracy. Mid-career professionals can rely on the income replacement ratio as a reliable guide. Younger workers can start with the 10x rule and refine their target as retirement draws closer and their spending picture becomes clearer.
Ramsey’s core insight holds up under scrutiny: age is irrelevant if the assets are not there. A 55-year-old with $1.5 million invested is more retirement-ready than a 67-year-old carrying only $200,000. The number in your investment accounts, not the number of candles on your birthday cake, determines when you can truly stop working. If you have not yet reached your target, the answer is not to retire anyway, but to keep building your nest egg until the math actually works.
Editor’s note: This article has been updated to reflect current market data, including the 10-year Treasury yield rising to approximately 4.38% as of late June 2026, the S&P 500 one-year total return climbing to roughly 27% through mid-June 2026, and headline CPI inflation accelerating to 4.2% year-over-year through May 2026, well above the 2.2% figure cited at original publication.
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