401(k) Contribution Calculator
See exactly how 401(k) contributions affect your paycheck. Find the right contribution rate to maximize your employer match, tax savings, and long-term growth.
Income & Tax
Your Contribution
Employer Match
401(k) Contribution Score
Good progress. Consider increasing your rate to capture the full employer match or boost long-term savings.
Your Contribution
$5,100/yr
Employer Match
$2,550/yr
Paycheck Reduction
$143
per biweekly paycheck
Real Cost After Tax
$143
$1 costs you $0.73
Annual Tax Savings
$1,377
22% marginal rate
Projected at Retirement
$1,142,974
in 30 years
Paycheck Impact
How your contribution affects your take-home pay
Without 401(k)
$2,495
Biweekly take-home
With 401(k) at 6%
$2,352
Biweekly take-home
Difference
$143
Only $143 after tax savings
Contribution Rate Comparison
See how different rates affect your paycheck, taxes, and savings
| Rate | Annual | Paycheck Cost | Tax Savings | Match | Total/Year | 10-Year Value |
|---|---|---|---|---|---|---|
| 1% | $850 | $24 | $230 | $425 | $1,275 | $18,390 |
| 2% | $1,700 | $48 | $459 | $850 | $2,550 | $36,781 |
| 3% | $2,550 | $72 | $689 | $1,275 | $3,825 | $55,171 |
| 4% | $3,400 | $95 | $918 | $1,700 | $5,100 | $73,561 |
| 5% | $4,250 | $119 | $1,148 | $2,125 | $6,375 | $91,951 |
| 6%Current | $5,100 | $143 | $1,377 | $2,550 | $7,650 | $110,342 |
| 8% | $6,800 | $191 | $1,836 | $2,550 | $9,350 | $134,862 |
| 10% | $8,500 | $239 | $2,295 | $2,550 | $11,050 | $159,382 |
| 12% | $10,200 | $286 | $2,754 | $2,550 | $12,750 | $183,903 |
| 15% | $12,750 | $358 | $3,443 | $2,550 | $15,300 | $220,683 |
| 20% | $17,000 | $477 | $4,590 | $2,550 | $19,550 | $281,984 |
| 25% | $21,250 | $598 | $5,695 | $2,550 | $23,800 | $343,285 |
Total Savings by Contribution Rate
Annual contribution + employer match at each rate
2026 Contribution Progress
Cumulative contributions month by month
Annual 401(k) Breakdown
Your contribution, employer match, and tax savings
Total
$9,027
Your Contribution
56%$5,100/yr
Employer Match
28%$2,550/yr
Tax Savings
15%$1,377/yr
Personalized Insights
Actionable recommendations based on your numbers
Full employer match captured: $2,550/year
At 6%, you're getting the maximum 50% employer match. That's an instant 50% return on your contributed dollars.
$1,377/year in tax savings
Your Traditional 401(k) contribution of $5,100 reduces your taxable income, saving $1,377 in federal and state taxes. Every $1 you contribute only costs $0.73 after the tax break.
22% of the 401(k) limit ($23,500)
You'd need to contribute 28% of salary to max out. That would cost $904 per paycheck but grow significantly faster.
Projected 401(k) balance at retirement: $1,142,974
With your current $45,000 balance plus $7,650/year in total contributions at 7% returns over 30 years, your 401(k) could grow to $1,142,974.
The 1% more challenge: $48/paycheck for $1,700 more per year
Increasing from 6% to 8% costs only $48 per paycheck but adds $1,700/year to your 401(k). Over 10 years with growth, that extra 1% becomes ~$24,520.
Total 401(k) benefit: $9,027/year
Your contribution ($5,100) + employer match ($2,550) + tax savings ($1,377) = $9,027 in total annual 401(k) benefit. That's 11% of your salary.
Related Retirement Calculators
Explore the next planning questions readers usually compare with this calculator.