Maximizing Your 401(k), and Is Retirement Bad for Your Brain?
Most important take away
Aim to save 15% of household income for retirement, and at the bare minimum contribute enough to your 401(k) to capture the full employer match — about a third of employees fail to do this and leave free money on the table. Beyond the match, the most consequential moves are choosing the right account type (traditional vs. Roth), avoiding cashing out when you change jobs, and actively auditing your plan’s fund options and features (true-up, mega backdoor Roth, brokerage window, in-service distributions).
Summary
This episode is a personal finance primer focused on getting the most out of an employer-sponsored retirement plan, plus market headlines and a sobering note on retirement and cognitive decline. Host Robert Brokamp walks through 11 actionable steps for managing a 401(k) (or 403(b)/457/TSP), interspersed with research on small-cap and international equity returns and a warning that early retirement may accelerate cognitive decline.
Investments and asset classes mentioned:
- S&P 500 — up 6.4% YTD.
- S&P 600 small-cap index — up 15.7% YTD.
- FTSE Global All-Cap ex-US index — up 10.6% YTD.
- Morningstar Developed Markets ex-US index — referenced as a diversification example, with correlation to U.S. stocks dropping from 0.92 (3-yr ending 2022) to 0.71 (end of 2025).
- Bridgeway Capital Management research — argues the small-cap premium is real once “Fallen Angels” (former large caps that crashed) and new market entrants (IPOs, SPACs, spin-offs) are excluded; doing so adds ~1.57% annually to small-cap returns since 1960.
- 403bwise.org — recommended free resource for teachers/nonprofit employees evaluating their plan provider options.
- Sponsor mentions (not investment recommendations): Charles Schwab Market Update podcast, Tasty Trade brokerage.
Actionable insights and why:
- Save 15% of household income (more if starting late). The consensus retirement savings rate; most people don’t hit it.
- Always capture the full employer match. With a typical 50%-on-the-dollar-up-to-6% formula, you need to save 12% to get the 3% match — one-third of workers miss this free money.
- Choose traditional vs. Roth deliberately. Traditional = tax break now (use the savings to fund more goals, don’t squander); Roth = tax-free withdrawals and no RMDs at 73/75. You can split between both. If your plan allows the employer match into a Roth, weigh added current tax vs. tax-free withdrawals.
- Increase your contribution rate every time you get a raise. Use Morningstar’s “spend twice your years to retirement” rule (e.g., 15 years to retirement → spend 30% of the raise, save 70%).
- Front-load contributions only if your plan offers a “true-up.” Otherwise maxing out early can forfeit per-paycheck matches. Note 2026 limits: $24,500 (under 50), $32,500 (50–59 and 64+), $35,750 (ages 60–63).
- Use the “mega backdoor Roth” if available. After-tax contributions up to the $72,000 (2026) all-in limit can be converted to Roth (in-plan or upon rollover) for tax-free growth — confirm plan support.
- Don’t cash out when changing jobs. More than 1 in 3 workers cash out, triggering taxes, the 10% penalty (pre-59½, with exceptions including the age-55 separation exception for 401(k)s), and lost compounding.
- Evaluate fund choices. Favor index funds and well-vetted target-date funds; avoid underperforming actively managed options. Check for a “side brokerage account” (offered by ~25% of plans) to access individual stocks/ETFs.
- Coordinate 401(k) holdings with your other accounts (IRAs, taxable, spouse’s accounts) — overweight your plan’s best funds and fill gaps elsewhere. Many use the 401(k) for the index portion of a portfolio that mixes index funds and individual stocks.
- Use plan provider extras — webinars, online tools, access to a financial professional.
- Roll over to an IRA when you can if your plan is weak — but if retiring between 55 and 59½, leaving money in the 401(k) preserves the age-55 penalty exception. Check for “in-service distributions” (often allowed at 59½+).
- Advocate for plan improvements. Coworkers and HR share the same plan; organizing for better fund lineups, lower fees, brokerage windows, after-tax contributions, or true-ups benefits everyone.
Macro/health context:
- U.S. debt-to-GDP just hit 100.2% ($31.27T debt vs. $31.22T GDP); interest now exceeds defense and Medicare spending — a structural risk worth factoring into long-term planning.
- A UC Irvine study (~40,000 older adults, 1996–2018) found employment near retirement age slows cognitive decline, especially for men 51–64. Healthy retirees in the MassMutual Retirement Happiness Study fill time with varied activities (loved ones, exercise, hobbies, travel) and brain-engaging pursuits.
Chapter Summaries
- Market headlines: YTD performance of U.S. large caps, small caps, and international stocks, with Bridgeway research on rehabilitating the small-cap premium and Morningstar data on international stocks decoupling from U.S. equities.
- Stock ownership and retirement health: 55% of U.S. households own stocks (highest globally), but UC Irvine research suggests retirement may accelerate cognitive decline — strategies for healthy retirees.
- Number of the week: U.S. debt-to-GDP crosses 100%, fiscal warning from the Committee for a Responsible Federal Budget.
- 401(k) Steps 1–3: Save 15% and capture the full match; choose traditional vs. Roth (and possibly both); raise your savings rate with every raise.
- 401(k) Steps 4–6: Whether to max out early (depends on true-up); 2026 contribution limits; mega backdoor Roth via after-tax contributions; don’t withdraw early — exceptions explained.
- 401(k) Steps 7–9: Evaluating fund options, side brokerage windows, coordinating 401(k) allocation with other accounts, leveraging provider tools.
- 401(k) Steps 10–11: Rollovers, in-service distributions, and advocating to improve a subpar plan — closing call to log in and audit your account.