401(k) Calculator
Featured
Project 401(k) balance with employer match and compound growth.
- On your device
- No signup
401(k) Paycheck Impact Calculator
AdvancedCompare paychecks with and without 401(k) contributions after tax savings.
- 100% Free
- No signup
- Private & secure
- Instant results
- On your device
Private on your device
Your information stays on your device and is not uploaded.
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Use this 401k paycheck comparison calculator to see how contributions change take-home pay. Enter gross pay, contribution percent, employer match, and tax rates to compare your paycheck with and without 401(k) deferrals side by side.
How to use this tool
1. Enter gross pay and select pay frequency. 2. Choose Traditional or Roth. 3. Set your contribution percent and employer match (with optional match cap). 4. Enter federal, state, and FICA tax rates. 5. Click Calculate to compare take-home pay and net paycheck impact. Contributions can be entered as a percent of gross or dollars per period.
Worked example
Example: $3,000 biweekly gross, Traditional 10% contribution, 50% match, 22% federal + 5% state + 7.65% FICA → $300 contribution, $150 employer match, about $81 income-tax savings, and take-home down by about $219 (not $300). Roth would show $0 tax savings and a full $300 take-home drop.
How it works
Enter gross pay per period, pay frequency, Traditional or Roth 401(k), contribution and employer match rates, and estimated tax rates. FICA always applies to full gross wages. Traditional contributions reduce federal/state taxable wages; Roth contributions do not. The calculator compares take-home pay with and without the contribution, showing tax savings and the effective cost of contributing.
Limitations
Results are estimates for educational purposes and are not financial or tax advice. Actual costs, rates, and rules vary.
Privacy and file handling
Your data stays on your device and is not uploaded.
FAQ
Frequently asked questions
Is 401(k) Paycheck Impact Calculator free?
Yes. It is free to use and you do not need to sign in or create an account.
Is my data private?
See the privacy note on this page. Many tools run on your device; some heavier file tools may use secure temporary processing when required.
Can I use 401(k) Paycheck Impact Calculator on mobile?
Yes. Open this page on your phone or tablet, enter your inputs, and use the on-screen controls.
Related pages
- Retirement planning — compare finance tools and read FAQs
- Retirement account calculators — compare finance tools and read FAQs
- Browse all free online tools on Utilnivo
- Explore more finance tools on Utilnivo
- 401(k) Calculator — Project 401(k) balance with employer match and compound growth.
- 401(k) Contribution Limit Calculator — Check max 401(k) contribution room against IRS deferral limits.
- Paycheck Calculator — Estimate paycheck withholding and take-home pay from gross pay, FICA, and deductions.
- Roth vs Traditional 401(k) Calculator — Compare Traditional 401(k) vs Roth 401(k) after-tax outcomes.
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