401(k) Retirement Calculator
Calculate your future 401(k) balance based on salary, contribution rate, employer match, and investment returns. Includes catch-up contributions for over-50s.
Key Features
- •Annual salary and expected increase percentage
- •Employee contribution percentage (0-100%)
- •Employer match percentage and salary cap
- •Catch-up contributions for users aged 50+
- •Investment return projection (conservative to aggressive)
- •Year-by-year balance and contribution breakdown
- •IRS limit validation for 2026 tax year
About 401(k) Retirement Calculator
A 401(k) is a powerful tax-advantaged retirement savings plan offered by American employers. This calculator helps you project how much you'll have at retirement by factoring in your current age, salary, and contribution percentage. Crucially, it models employer matching (e.g., 50% match up to 6% of salary) and annual salary increases. It also accounts for the IRS annual contribution limits ($23,000 for 2026) and catch-up contributions ($7,500) for those aged 50 and older. Use this tool to see how increasing your contribution by even 1% can result in hundreds of thousands of dollars more in retirement.
401(k) Retirement Calculator is optimized for fast browser-based use, so you can test multiple scenarios in seconds.
Formula & Logic
- 01Employer Match = min(salary * match_cap, salary * employee_rate * match_percent).
- 02Total Annual Addition = min(IRS_limit, salary * employee_rate) + Employer Match.
- 03Future Value = Σ [Annual Addition * (1 + r)^(retirement_age - current_age)].
Practical Examples
- 01Baseline check: Use realistic inputs in 401(k) Retirement Calculator to generate a first-pass estimate.
- 02Sensitivity check: Change one key input at a time to compare how the output shifts.
- 03Decision check: Save two or more scenarios and use the differences to choose the better option.
Important Limitations
- •Results depend on the accuracy of your inputs.
- •Displayed values may be rounded for readability.
- •Financial outputs are planning estimates and do not include institution-specific fees unless provided.
Frequently Asked Questions
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