The Nest Egg: Build & Protect

Retirement accounts are tax-advantaged containers. The investments inside can be similar; the containers determine when you pay tax.

401(k) — the workplace plan. Offered by your employer. You contribute from your paycheck before income tax (traditional) or after tax (Roth 401(k), if your plan offers it). Many employers match part of your contribution — free money, and the highest guaranteed return available anywhere. Two fine points: first, the match usually vests over time — you may need to stay several years before the employer's contributions are fully yours, so check your plan's vesting schedule before changing jobs. Second, the investment menu inside a 401(k) is a short list your employer chose — you do not need the perfect fund, just a low-cost broad stock fund and a bond fund in roughly your target mix. Contribution limits are set by the IRS each year and rise with inflation; as of 2026 they are in the low tens of thousands of dollars annually. If you are not contributing at least enough to capture the full employer match, fix that before anything else in this module.

Traditional IRA (Individual Retirement Account). A personal account you open yourself. Contributions may be tax-deductible, growth is tax-deferred, and you pay income tax when you withdraw in retirement. Available to anyone with earned income, subject to annual contribution limits (lower than 401(k) limits) and deductibility rules that depend on your income and whether you have a workplace plan.

Roth IRA. Contributions are made with after-tax dollars — no deduction now — but growth and qualified withdrawals in retirement are completely tax-free. Income limits restrict who can contribute directly (high earners use the "backdoor Roth" method — contributing to a traditional IRA and converting — a tactic your tax adviser can walk you through). The Roth's superpower in retirement: tax-free withdrawals do not raise your taxable income, which helps control how much of your Social Security gets taxed and keeps you out of higher Medicare premium surcharges.

Taxable brokerage account. No tax advantages, but no rules either — contribute any amount, withdraw any time, no penalties, no required withdrawals. The flexible reserve every retiree should have.

HSA — the stealth retirement account. If you have a qualifying high-deductible health plan, a Health Savings Account is the single most tax-favored account in existence: contributions are tax-deductible, growth is tax-free, and withdrawals for qualified medical expenses are tax-free — the only triple tax advantage available. The advanced move: pay this year's medical bills from cash, save the receipts, and let the HSA compound untouched for decades. There is no time limit on reimbursement, so you can withdraw tax-free against old receipts years later. Invest the HSA balance like retirement money, and it becomes a Roth-like account you also got to deduct today. (One warning from Module 3: you cannot contribute to an HSA once you enroll in any part of Medicare — plan your final working years accordingly.)

The one-paragraph tax logic: traditional accounts give you the tax break now and tax you later; Roth accounts tax you now and never again. In your peak earning years, the traditional deduction is usually worth more; in low-income years (early retirement before Social Security and required minimum distributions begin), Roth conversions — moving money from traditional to Roth and paying tax at low rates — can be brilliant. Module 7 covers Roth conversions and required minimum distributions (RMDs) — the IRS-mandated annual withdrawals from traditional accounts that begin in your seventies — in depth.

Congress knows that many people save too little early and need to sprint late. Once you turn 50, the IRS lets you contribute extra — beyond the standard annual limits — to 401(k)s and IRAs. These are called catch-up contributions.

• The 401(k) catch-up is substantial: several thousand dollars per year on top of the standard limit.
• The IRA catch-up is smaller but still meaningful: an additional amount per year on top of the standard IRA limit.
• Recent law (SECURE 2.0) created an even larger catch-up for workers roughly ages 60 to 63 — a final sprint window right before typical retirement ages.
• One 2026 rule to know: if you earned more than $145,000 the prior year, SECURE 2.0 requires your catch-up contributions to go into the Roth (after-tax) side of your 401(k) — no pre-tax catch-ups for high earners starting in 2026.

The exact dollar figures adjust for inflation each year, so check the current IRS limits rather than memorizing a number. The principle is what matters: your fifties and early sixties are your highest-earning years and your last chance to stuff the accounts. If you are behind, this is the lever — max the standard contribution first, then add the catch-up, then the enhanced catch-up if you are in the window.

One caution: catch-up contributions only help if the money is actually invested. Contributions sitting in a money-market default inside your 401(k) are barely growing. Check where your contributions are going — the next section explains what "going" should mean.

Asset allocation is simply the mix of stocks and bonds (and cash) in your portfolio. Stocks grow more over time but swing violently; bonds grow less but hold steadier. The right mix changes with age — this is the glide-path idea: start aggressive when you are young, and gradually get more conservative as retirement approaches.

Why it works. When you are 40 with 25 years until retirement, a market crash is a buying opportunity — you keep contributing and buy shares on sale. When you are 68 and withdrawing, a crash is a catastrophe — you are selling shares at the worst moment to pay bills. (Module 5 explains this sequence-of-returns risk in depth.) The glide path matches your risk to your timeline.

Rough guideposts, not rules: In your fifties, many advisers suggest a meaningful majority in stocks — you still have a decade or more of growth ahead. In your sixties, the stock share glides down as bonds and cash build a buffer for early-retirement withdrawals. In your seventies and beyond, enough in stable assets to cover several years of spending, with the rest still growing in stocks — because at 75 you may need the money to last another 20 years, and bonds alone rarely outpace inflation over that span.

Target-date funds: the autopilot option. A target-date fund (named for your expected retirement year, like "Target 2035") implements the glide path automatically — it starts stock-heavy and shifts toward bonds as the date approaches, with no action required from you. For anyone who does not want to manage allocation themselves, a low-cost target-date fund inside a 401(k) or IRA is a genuinely good default. Check the expense ratio (the fund's annual fee): the same glide path costs a fraction of a percent at a low-cost provider and several times more elsewhere, and that difference compounds for decades.

What the glide path is not: it is not market timing, and it is not permission to go to all cash at 65. Retirees who hold zero stocks trade market risk for a slower, surer danger — inflation quietly shrinking what their money buys over a 25-year retirement.

Most people change jobs several times, leaving a trail of old 401(k)s behind. When you leave an employer, you generally have four options — and one of them is a trap.

1. Leave it where it is. Fine if the plan has good, low-cost investments. You cannot contribute anymore, but it keeps growing.
2. Roll it into your new employer's 401(k). Keeps everything in one place; good if the new plan is solid.
3. Roll it into an IRA. A direct rollover (trustee-to-trustee, where the money moves between institutions without touching your hands) into a traditional IRA — no taxes, no penalties, and usually a wider choice of investments with lower fees.
4. Cash it out. The trap. You pay income tax on the full amount plus a 10% early-withdrawal penalty if you are under 59½ — and you amputate decades of compounding. Cash-outs at job changes are one of the biggest leaks in American retirement savings.

The golden rule of rollovers: never take possession of the check yourself if you can avoid it. A direct trustee-to-trustee transfer avoids the mandatory 20% withholding that applies when a 401(k) distribution is paid to you personally — withholding you then have to replace out of pocket within 60 days to complete a tax-free rollover. Let the institutions move the money.

Over time, your allocation drifts. If stocks surge, a 60/40 portfolio becomes 75/25 without you touching anything — meaning you are carrying more risk than you chose. Rebalancing is the annual (or semiannual) tune-up: sell a little of what grew, buy a little of what lagged, and restore your target mix.

It feels wrong — you are selling winners and buying losers — but it is the mechanical version of "buy low, sell high," and it keeps your risk where you decided it should be. Many 401(k) plans offer automatic rebalancing; turn it on. In an IRA, it takes ten minutes a year. In a taxable account, be mindful of taxes when you sell — prefer to rebalance with new contributions or inside tax-advantaged accounts where selling has no tax consequence.

If you are in your late fifties and feeling behind, here is what the whole module looks like as a to-do list:

1. This month: capture the full 401(k) match; confirm your contributions are actually invested (not sitting in cash); name or update beneficiaries everywhere.
2. This year: max out contributions including catch-up amounts; consolidate old 401(k)s via direct rollover; audit fees across all accounts and move expensive funds to low-cost equivalents.
3. Ongoing: keep your age-appropriate mix (glide path or target-date fund); rebalance annually; build the emergency fund so the retirement vault never opens early.
4. Before 65: coordinate with the tax planning in Module 7 (Roth conversions in low-income years) and the withdrawal sequencing in Module 5.

None of this requires brilliance. It requires doing ordinary things consistently for the years you have left — and the years you have left are worth more than you think, because contributions in your late fifties and sixties still get a decade or more of compounding, and every dollar of fees you eliminate compounds too.

Asset allocation is the mix of stocks and bonds. Asset location is which account holds which — and getting it right saves real tax money over decades.

The principle is simple: put tax-inefficient investments where the tax shelter is biggest, and tax-efficient ones where it matters least.

• Bonds and bond funds generate regular interest, taxed as ordinary income every year in a taxable account. They belong in traditional 401(k)s and IRAs first — the interest compounds tax-deferred, and you pay tax once at withdrawal.
• Stocks and stock index funds are relatively tax-efficient: most growth comes as unrealized gains (untaxed until sold) and qualified dividends (taxed at lower rates). They are fine in taxable accounts, and they are also the best choice for Roth accounts — because the highest-growth assets deserve the account where growth is never taxed.
• Real estate investment trusts (REITs) pay high non-qualified dividends, making them tax-inefficient — better inside tax-advantaged accounts than taxable ones.

You do not need to be precise about this. The rough rule covers 90% of the benefit: bonds in traditional accounts, highest-growth assets in Roth, whatever is left over in taxable. And never let the tax tail wag the investment dog — the right allocation in the wrong account beats the wrong allocation in the right account every time.

Most nest eggs are not destroyed by markets. They are destroyed by their owners. Here are the four killers, in order of damage done.

1. Panic selling. The market falls 20%, the news screams, and you sell — converting a temporary decline into a permanent loss, and usually missing the rebound. Every major crash in history has eventually recovered; the investors who got hurt worst were the ones who sold at the bottom. Your defense is structural, not emotional: an age-appropriate allocation (so a crash does not threaten near-term bills), several years of spending in stable assets, and a written plan — from Module 1 — that says what you do when markets fall. Decide in calm weather; execute in storms.

2. High fees. A 1% annual fee sounds trivial. Over 30 years, it can consume roughly a quarter to a third of your potential wealth compared with a low-cost alternative — because you pay it every year on a growing balance, and the money paid in fees never compounds. Audit every account: fund expense ratios, adviser fees, 401(k) administrative charges. Anything over about 1% total per year deserves a hard question. Low-cost index funds exist for every major asset class; expensive actively managed funds rarely justify their price over long periods.

3. Chasing performance and speculation. Buying whatever soared last year, concentrating in one hot stock, trading options on a retirement account, "can't-miss" tips from a brother-in-law. Retirement savings are for compounding, not excitement. Keep speculation — if you must — to a small, separate "play money" account you can afford to lose, and never with money you need for rent at 80.

4. Raiding the accounts early. Cashing out a 401(k) when changing jobs, borrowing against it for lifestyle spending, or withdrawing before age 59½ and eating the 10% early-withdrawal penalty plus income tax. Every dollar removed in your forties is several dollars missing in your seventies. Treat retirement accounts as a vault with a time lock, not a rainy-day fund — build a separate emergency fund (three to six months of expenses in a savings account) so the vault never has to open early.

If there is one move that improves a retirement plan more than any investment tweak, it is working even one or two years longer than planned. The math works on four fronts at once: you contribute to savings for more years, your savings compound for more years, you delay drawing the money down (so it must last fewer years), and — if you time it right — you replace low-earning years in your Social Security 35-year average while moving closer to delayed retirement credits.

This does not have to mean staying in a grueling full-time job. Many people bridge with lighter work: consulting in their old field, part-time hours, seasonal work, or a lower-stress job that covers living expenses while savings and Social Security keep growing untouched. Even covering your own expenses for two extra years — contributing nothing new, just not withdrawing — can add years of longevity to a nest egg.

Working longer is not the answer for everyone; health and circumstances decide. But as a planning assumption, it deserves a line in your written plan: "If the numbers are tight at 65, my fallback is part-time work to 67." A fallback you have chosen in advance is a plan. One you discover you need at 68 is a scramble.

• [ ] I am contributing enough to my 401(k) to capture the full employer match.
• [ ] If I am 50 or older, I am using catch-up contributions (and the enhanced ages-60–63 catch-up if eligible).
• [ ] I know the current IRS contribution limits for my accounts (checked this year, not memorized from years ago).
• [ ] My investments match my age — I can state my stock/bond mix: __________% stocks / __________% bonds / __________% cash.
• [ ] I know the total fees I pay per year across all accounts: __________%.
• [ ] I have a separate emergency fund so I never have to raid retirement accounts early.
• [ ] My beneficiaries are named and current on every account.
• [ ] I have a written rule for what I do when the market falls 20% (from my Module 1 plan).

• 401(k)s, traditional IRAs, Roth IRAs, and taxable accounts are tax containers with different rules: traditional defers tax, Roth eliminates it on qualified withdrawals, taxable has no rules at all. Capture the full employer 401(k) match first — it is free money.
• After 50, catch-up contributions let you save beyond standard IRS limits, with an even larger window roughly around ages 60–63. Your fifties are the sprint — use them.
• The glide path: more stocks when young, gradually more bonds and cash as retirement approaches. Target-date funds automate this and are a fine default — just check the expense ratio.
• Do not go to all cash in retirement: inflation over a 25-year retirement is its own risk, and you still need growth.
• The four nest-egg killers are panic selling, high fees, speculation with retirement money, and raiding accounts early. Structure — allocation, reserves, a written plan — beats willpower.
• Roth conversions in low-income years and required minimum distributions (RMDs) in your seventies interact with everything here — Module 7 covers them in depth, and Module 5 covers how to draw the money down.