Retirement

401(k)

6 min readUpdated: Dec 15, 2024

Quick Definition

An employer-sponsored retirement savings plan that allows employees to save and invest a portion of their paycheck before taxes are taken out.

A 401(k) is one of the most valuable retirement savings tools available to American workers. Named after the section of the tax code that created it, a 401(k) allows you to save for retirement with significant tax advantages.

How it works: Money is deducted from your paycheck before income taxes are calculated (for traditional 401k), lowering your taxable income today. The money grows tax-deferred until you withdraw it in retirement, when it's taxed as ordinary income.

Employer Match: Many employers offer matching contributions—essentially free money. A common match is 50% of your contributions up to 6% of your salary. If you earn $60,000 and contribute 6% ($3,600), your employer adds $1,800. Not contributing enough to get the full match is leaving money on the table.

2024 Contribution Limits: - Under 50: $23,000 per year - 50 and older: $30,500 (includes $7,500 catch-up contribution)

Traditional vs Roth 401(k): - Traditional: Pre-tax contributions, taxed at withdrawal - Roth: After-tax contributions, tax-free withdrawals in retirement - Many experts recommend Roth for younger workers in lower tax brackets

Important Rules: - Early withdrawals (before 59½) typically incur a 10% penalty plus taxes - Required Minimum Distributions (RMDs) start at age 73 - Loans from your 401(k) are possible but generally not recommended

The Power of 401(k) Investing

Starting at age 25, contributing $500/month with 7% average returns:

  • By age 35: ~$86,000 saved
  • By age 45: ~$262,000 saved
  • By age 55: ~$590,000 saved
  • By age 65: ~$1,200,000 saved—millionaire status from $500/month!

Key Takeaways

  • Always contribute enough to get the full employer match
  • Contribution reduces your current taxable income
  • Choose between traditional (pre-tax) and Roth (after-tax) based on your situation
  • Investments grow tax-deferred for decades
  • Early withdrawal penalties discourage using it as a piggy bank
  • When you leave a job, you can roll over to an IRA or new employer's plan
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