401k Calculator

Compare Pre-tax vs Roth 401k with Tax Implications

Your Information

IRS limit: $23,000 for 2024

✨ Compare Split Strategy

Employer Match

e.g., 100% match up to 6% of salary

Growth & Tax Assumptions

Your Tax Rates (Auto-calculated)

Marginal Rate: 24.0%
Effective Rate: 18.5%

We use your marginal rate for 401k calculations because contributions reduce income at your top tax bracket.

Based on 2024 federal tax brackets. Adjust if needed for state taxes.
Estimated assuming 70% of current income. Adjust based on your expectations.

Side-by-Side Comparison

Traditional (Pre-tax) 401k

Total at Retirement $0
After-Tax Value $0
Total Contributions $0
Tax Savings Now $0

Roth 401k

Total at Retirement $0
After-Tax Value $0
Total Contributions $0
Taxes Paid Now $0

Traditional (Pre-tax) 401k Details

Your Contributions: $0
Employer Contributions: $0
Total Principal: $0
Investment Gains: $0
Balance at Retirement: $0
Taxes Owed on Withdrawal: $0
Final After-Tax Amount: $0

Roth 401k Details

Your Contributions: $0
Employer Contributions: $0
Total Principal: $0
Investment Gains: $0
Balance at Retirement: $0
Tax-Free Portion: $0
Taxes on Employer Match: $0
Final After-Tax Amount: $0

Tax Implications Explained

Traditional (Pre-tax) 401k

💰
Your Contributions: TAXED

Contributed pre-tax, but taxed at withdrawal

🏢
Employer Contributions: TAXED

Always pre-tax, taxed at withdrawal

📈
Investment Gains: TAXED

All growth is taxed at withdrawal

Tax Rate Applied: 22%

Benefit: Lower taxable income now, tax savings today

Risk: Future tax rates may be higher

Roth 401k

💰
Your Contributions: TAX-FREE

Contributed after-tax, tax-free at withdrawal

🏢
Employer Contributions: TAXED

Goes into pre-tax bucket, taxed at withdrawal

📈
Investment Gains on Your Contributions: TAX-FREE

All growth on your Roth contributions is tax-free

📈
Investment Gains on Employer Match: TAXED

Growth on employer contributions is taxed

Tax Rate Applied: 22% (only on employer portion)

Benefit: Tax-free growth, no tax surprises in retirement

Trade-off: Pay taxes now at current rate

Key Insights