📚 Understanding 401(k) Plans
A 401(k) is an employer-sponsored retirement savings plan that allows you to contribute pre-tax dollars from your paycheck, invest them for tax-deferred growth, and withdraw in retirement.
- Compound Growth — Your contributions earn returns, and those returns earn returns. Starting early is the single most powerful factor. $500/month from age 25 to 65 at 7% = ~$1.2 million. Starting at 35 = ~$567,000.
- Employer Match — Free money. A 50% match on 6% of an $80,000 salary = $2,400/year from your employer. Over 30 years at 7% returns, that's over $240,000 in free money.
- Vesting — You always own your own contributions. Employer match may have a vesting schedule (1-6 years). Leave before fully vested and you lose unvested employer funds.
- Contribution Limits (2024) — $23,000 employee limit, $30,500 age 50+. Total (employee + employer) limit: $69,000 ($76,500 age 50+).
Frequently Asked Questions
How much should I contribute to my 401(k)?▸
At least enough for full employer match. Target 10-15% of gross income. 2024 limit: $23,000 ($30,500 age 50+). Start early — 10% from age 25 at 7% returns = $1M+ by 65 on $60k salary.
How does employer matching work?▸
Common formulas: dollar-for-dollar on first 3-6%, or 50% match on first 6%. On $80k salary with 50% match on 6%: you contribute $4,800, employer adds $2,400. Vesting required to keep match.
What is the average 401(k) balance by age?▸
25-34: ~$37k avg/$15k median; 35-44: ~$97k/$37k; 45-54: ~$179k/$70k; 55-64: ~$256k/$108k. Fidelity recommends 1x salary by 30, 3x by 40, 6x by 50, 8x by 60.
Traditional vs. Roth 401(k)?▸
Traditional: pre-tax contributions, taxed withdrawals. Best if lower tax bracket in retirement. Roth: after-tax contributions, tax-free withdrawals. Best if higher taxes expected. Many do a mix for flexibility.
Can I withdraw before retirement?▸
Before 59½: income tax + 10% penalty. Exceptions: hardship, first home ($10k), disability, 72(t) payments. Loans allowed up to $50k or 50% of balance. New: $1,000/year emergency withdrawals penalty-free.
What happens to my 401(k) if I change jobs?▸
Options: leave with old employer, roll to new 401(k), roll to IRA, or cash out (not recommended — taxes + penalty). Direct rollover avoids taxes. Consider fees, options, and creditor protection.
What is the 2024 contribution limit?▸
$23,000 employee ($30,500 age 50+). Total limit (employee + employer): $69,000 ($76,500 age 50+). Highly compensated employees ($155k+) may face additional testing limits.
How much do I need to retire?▸
25x rule: save 25× annual expenses. 4% rule: withdraw 4% annually for 30+ years. Fidelity: 10× final salary. On $60k/year expenses, target ~$1.5M. Varies by lifestyle, Social Security, and healthcare.