I’m 46 With a $1 Million 401(k). How Can I Get to $2 Million at a Normal Retirement Age?
A lot of people reach their mid-40s with little money saved for retirement. So, if you're that age and already have $1 million saved, you're ahead of the game in a very good way. But let's face it. A $1…
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Reaching your mid-40s with little saved for retirement is, unfortunately, the norm. According to Vanguard’s “How America Saves 2026” report, the average 401(k) balance across all age groups climbed to a record $167,970 in 2025, up 13% from the prior year. The median balance, a far more representative figure, came in at $44,115, because a relatively small number of high-balance accounts pulls the average well above where most savers actually land. 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 stretching that sum to support a higher standard of living is a real challenge. Doubling it to $2 million by the time you retire is a goal worth pursuing, and the math makes it more achievable than most people assume.
Two factors drive the path from $1 million to $2 million: how much time remains before you retire, and whether you continue feeding that balance through additional contributions. Both matter more than most savers realize, and the good news is that at 46, you have meaningful runway on both fronts.
The math behind compound growth
Sitting on $1 million at 46 with a plan to retire between 65 and 67 gives you roughly 20 years for that money to grow. Historical data on major U.S. stock market indices shows average annual returns of around 10% over extended periods when dividends are reinvested. More conservative estimates put the long-term real return closer to 7% to 8% after accounting for inflation and investment fees.
The numbers compound impressively over that kind of time horizon. At 8% annually for 20 years, $1 million becomes 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 sufficient 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 frame the challenge in salary multiples: 1x your salary saved by 30, 3x by 40, 6x by 50, and 10x by 67. A million-dollar saver at 46 is likely already exceeding the 6x-by-50 target on almost any salary, which puts you in a strong position heading into the final stretch.
Max out contributions while you can
Letting your balance ride passively 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 prior-year FICA wages exceeded $150,000 are required to make their catch-up contributions as Roth (after-tax) contributions. 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 pays off: 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 case for aggressive contributions becomes more urgent. Vanguard’s 2026 data shows 79% of large plans now auto-enroll workers, so many savers are building balances earlier than past generations; if you started early, that head start only strengthens your position at 46.
Work with a financial advisor
Reaching $2 million by your mid-60s is highly achievable when you start with $1 million at 46. Compound growth over 20 years, assuming market returns near historical averages, should carry you well past that threshold even without additional contributions.
A hands-off approach still carries risk, though. 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 updated the Vanguard benchmark data from the “How America Saves 2025” report to the “How America Saves 2026” report, revising the average 401(k) balance from $148,153 to $167,970 and the median from $38,176 to $44,115, both covering year-end 2025. It also added Fidelity’s full salary-multiple savings progression (1x by 30, 3x by 40, 6x by 50, 10x by 67) and context on Vanguard’s finding that 79% of large plans now auto-enroll workers.
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Maurie Backman has more than a decade of experience writing about financial topics, including retirement, investing, Social Security, and real estate. Her work has appeared on sites that include The Motley Fool, USA Today, U.S. News & World Report, and Kiplinger.
Prior to becoming a full-time financial writer, Maurie worked in the financial industry trading distressed debt. She then changed course and spent a few years designing electronic toys. After a stint in content marketing and UX, she shifted back into writing and has since covered everything from the housing market to estate planning to Medicare.
When she's not busy writing, Maurie can be found hiking, walking her dogs, driving her kids to their various sports practices and games, and curling up with a good book. She cooks on occasion and bakes way too often.
