Reaching your mid-40s with little saved for retirement is, unfortunately, the norm. According to Vanguard’s “How America Saves 2025” report, the average 401(k) balance across all age groups hit a record $148,153 in 2024, up 10% from the prior year. Worth noting: the median balance was just $38,176, showing how a relatively small number of high-balance accounts pulls the average upward. If you already have $1 million at 46, you are not just ahead of those figures. You are in a different league entirely.
A million dollars alone will not fund a lavish retirement. It should cover essential expenses comfortably, but living large on that sum is unlikely. Doubling it to $2 million by the time you retire is a goal worth pursuing, and it is more achievable than most people assume once you understand the math.
The path from $1 million to $2 million depends heavily on two factors: how much time remains before you retire, and whether you keep feeding that balance through additional contributions. Both matter more than most savers realize.
The math behind compound growth
If you are sitting on $1 million at 46 and hoping to retire between 65 and 67, you have roughly 20 years for that money to grow. Historical data shows that major U.S. stock market indices have delivered annual returns of around 10% over extended periods when dividends are reinvested, though more conservative estimates peg the long-term average closer to 7% to 8% after accounting for inflation and fees.
Compounding at 8% annually for 20 years turns $1 million into approximately $4.66 million. At 10%, that same balance grows to roughly $6.73 million. Even without contributing another dollar, your current savings could more than double several times over, given enough time and a portfolio positioned to capture broad market returns.
These projections carry real risk. Market downturns can slash returns during critical years, inflation erodes purchasing power, and sequence-of-returns risk (poor market performance early in retirement) can derail even well-funded plans. No projection is a guarantee. History does suggest, however, that a diversified, equity-heavy portfolio held for two decades has a strong track record of substantial growth. Fidelity’s savings guidelines recommend having six times your salary saved by age 50, a benchmark that a million-dollar saver at 46 is likely already exceeding on almost any salary.
Max out contributions while you can
Letting your balance ride is not enough if you want to maximize your retirement security. The IRS raised contribution limits for 2026, giving savers meaningfully more room to fill tax-advantaged accounts. A 401(k) now accepts up to $24,500 in employee deferrals, up from $23,500 in 2025. Workers who turn 50 or older by year-end can add an extra $8,000 in catch-up contributions, bringing the total to $32,500. Those aged 60 through 63 qualify for a larger “super catch-up” of $11,250 under the SECURE 2.0 Act, raising the annual cap to $35,750.
On the IRA side, traditional and Roth IRAs accept up to $7,500 in contributions for 2026, up from $7,000 in 2025. Savers 50 and older can add a $1,100 catch-up for a total of $8,600. That catch-up amount increased for the first time in roughly two decades, courtesy of SECURE 2.0. Between a 401(k) and an IRA, a saver who turns 50 can funnel more than $41,000 a year into tax-advantaged retirement accounts.
One meaningful rule change taking effect in 2026: under SECURE 2.0, participants aged 50 or older whose FICA wages exceeded $150,000 in the prior year are required to make their catch-up contributions as Roth (after-tax) contributions. If that applies to you, check with your plan administrator before assuming your catch-up will go in on a pretax basis. Plans that do not yet offer a Roth option may be unable to accept catch-up contributions from high earners until they add that feature.
If you can afford to max out these limits, do it. You will accelerate your balance growth while shielding a significant portion of your income from taxes each year. Even if your savings already look solid, taking full advantage of the catch-up provisions compounds your advantage considerably as you head into your 50s.
Assess your target retirement age
The definition of “normal retirement age” depends on personal goals and financial circumstances. Full retirement age for Social Security benefits is 67 for anyone born in 1960 or later. If you view 67 as your target, you have 21 years from age 46 to let your portfolio compound. Retiring at 65 shortens that window to 19 years, while pushing retirement to 70 extends it to 24 years.
Each additional year you work extends the compounding period and delays the moment you begin drawing down your savings. That combination of more growth and less depletion significantly improves long-term sustainability. Delaying Social Security claims also matters: benefits grow by roughly 8% for each year you wait past full retirement age, up to age 70. If you are weighing an earlier exit at 55 or 60, the timeline compresses sharply and the need for aggressive contributions becomes more urgent.
Work with a financial advisor
Reaching $2 million by your mid-60s is highly achievable when you start with $1 million at 46. Even with no additional contributions, compound growth over 20 years should carry you well past that threshold, assuming market returns stay near historical averages.
That does not mean a hands-off approach is wise. A financial advisor can review your portfolio allocation to ensure it is positioned for growth without taking on excessive risk as you age. They can model realistic scenarios based on your planned retirement date, expected Social Security benefits, and other income sources. The real value of an advisor extends well beyond picking investments. It is keeping your strategy aligned with your goals as life and markets change around you.
Editor’s note: This pass added context from Vanguard’s “How America Saves 2025” report on the median 401(k) balance of $38,176 (versus the $148,153 average) and the record 7.7% average personal deferral rate reached in 2024. It also added the Social Security delay credit of roughly 8% per year past full retirement age, and clarified that plans without a Roth feature may be unable to accept catch-up contributions from high earners starting in 2026 under SECURE 2.0.
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