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401(k) Calculator with Employer Match

See how your 401(k) contributions, company match, and decades of compounding build your retirement nest egg.

401(k) Contribution Details

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🏢 Employer Matching Formula

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Common: 50% (50¢ per $1) or 100% (dollar-for-dollar)
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Common: 4%, 5%, or 6% of salary
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Retirement Nest Egg Projection

Total Balance at Age 65
$2,140,890
Based on 37 years of compound growth
Free Employer Match
$221,450
100% Guaranteed Return
Your Contributions
$420,100
Direct out-of-pocket savings
Total Compound Interest Growth
$1,499,340
Interest earned on interest (70% of total!)

How 401(k) Employer Matching Works in the US

A 401(k) is an employer-sponsored retirement account that provides significant tax advantages. In a Traditional 401(k), your contributions are deducted pre-tax from your paycheck, lowering your taxable income for the current year.

1. The "Free Money" Rule

The most lucrative benefit of an American 401(k) is the employer match. A common formula is "50% match on the first 6% of your salary". If you make $80,000 and contribute 6% ($4,800), your company contributes an additional $2,400. That is an immediate, risk-free 50% return on your investment before any market growth occurs.

2. IRS 401(k) Contribution Limits

For individual taxpayers, the IRS sets annual limits:

  • Standard Employee Limit: $23,000 per year.
  • Catch-Up Contribution (Age 50 and older): An additional $7,500 (totaling $30,500).
  • Total Combined Limit (Employee + Employer Match): Up to $69,000 per year.

3. Understanding Vesting Schedules

Your own contributions are always 100% yours immediately. However, employer matching funds often follow a vesting schedule:

  • Cliff Vesting: You become 100% vested after a specific time (e.g., 3 years of service). Leaving earlier means forfeiting unvested match.
  • Graded Vesting: You earn 20% ownership each year until reaching 100% after year 5.