Female Retirement Fund chartfor Professional Adults 40 years old

Chart Insights

At 40, is your retirement savings balance positioned to take full advantage of the peak earning years now within reach? The median retirement fund balance for 40-year-old women stands at $39,600, with most women in this group holding between $13,860 at the 25th percentile and $91,080 at the 75th percentile. Women on average accumulate approximately 30-40% less in retirement savings than men by the time they reach retirement, driven by the gender pay gap, career interruptions for caregiving, and longer average lifespans that require the same savings to stretch further. Vanguard's 2025 data shows a median 401(k) balance of $39,958 for the 35-44 age group, while the Federal Reserve's Survey of Consumer Finances puts the broader household retirement savings median at $45,000 for this bracket. The average retirement fund balance is considerably higher than the median at approximately $110,880, driven by a small number of high earners and long-term savers whose balances are not representative of the typical experience. NettleWorth uses the median because it reflects where most women your age actually stand, not a figure inflated by outliers at the top of the distribution.

Milestones and Peer Comparisons

At 40, most women are in or approaching their peak earning years and should be contributing at the highest rates of their careers. A retirement balance around $39,600 is typical; those above $91,080 are on track for a financially comfortable retirement. Fidelity's widely used retirement benchmark suggests having approximately 3x of your annual salary saved by 40. At 50, catch-up contributions become available - an additional $8,000 annually to a 401(k) and $1,000 to an IRA - a provision that is specifically designed for women who are approaching retirement and want to accelerate their savings. Having a retirement fund around $39,600 places you at the median for 40-year-old women, while a balance above $91,080 puts you in the top quarter of your age group.

Tips and Growth Factors

At 40, you are approaching or in the highest-income years of your career, and your retirement savings rate should reflect that. The 2026 401(k) contribution limit is $23,500; maximise it. At 50, catch-up contributions allow an additional $8,000 per year to your 401(k) (total: $31,500) and an additional $1,000 to your IRA (total: $8,000). Plan your finances around taking full advantage of these provisions as soon as they become available. If your income exceeds the Roth IRA contribution limit, the backdoor Roth conversion strategy allows you to access Roth tax benefits regardless of income. A target retirement fund balance of $91,080 or above by the time you reach 50 gives you exceptional compound growth runway across the final pre-retirement years.

Data Sources and Methodology

All statistics on this page are derived from reputable sources, including the Federal Reserve's Survey of Consumer Finances, anonymised data from NettleWorth users, and our own research.

Retirement fund percentiles presented on this page are generated using a robust, age-based modelling framework calibrated to reflect realistic patterns of retirement savings accumulation and drawdown throughout the lifespan. The approach applies smoothing techniques calibrated to align with Federal Reserve Survey of Consumer Finances data and Vanguard participant data. We use a range of separate percentiles (from the 2nd to the 99th) that are calculated for every age and demographic group, with demographic adjustments built into the model to reflect currently observed population-level trends.

Primary data sources include the Federal Reserve's Survey of Consumer Finances (2022 release), Vanguard's How America Saves (2025 edition), Fidelity Investments Q4 2024 retirement analysis, and the Investment Company Institute Fact Book. Retirement fund figures are specified for U.S. residents in USD and follow the percentile structure used in our calculations.

Further details on our assumptions and our transparent methodology are described in our documentation for those seeking deeper insight into the modelling process and its limitations. Get in touch to discuss further or if you believe an error has been made somewhere.