401(k) Calculator Scenarios and Practical Examples
Explore worked examples and comparative analyses demonstrating how employer matching formulas, elective contribution rates, compounding horizons, and annual return assumptions shape your retirement balance.
How Employer Match Affects Your 401(k) Growth
See how employer matching contributions increase total deposits and generate hundreds of thousands of dollars in compound growth over decades.
How Contribution Rate Changes Your Projected 401(k) Balance
Compare elective deferral rates from 3% to 15% of salary to evaluate how modest increases in regular savings amplify your final retirement nest egg.
How Time and Investment Growth Affect Your 401(k)
Examine the exponential impact of starting at age 25 versus age 35 or 45, and compare projected balances across conservative to aggressive return rates.
How 401(k) Retirement Projections Work
A defined-contribution 401(k) plan builds wealth through three compounding drivers: regular employee payroll deductions, company matching contributions, and long-term investment growth. Our scenarios model these variables using the exact mathematical engine of our 401(k) Calculator:
- •Elective Deferral Cap: Employee contributions are subject to statutory annual limits ($24,500 for the 2026 tax year).
- •Employer Matching Formula: Matches are modeled as a percentage of salary matched up to a specified percentage cap (e.g., 50% match up to 6% of pay).
- •Beginning-of-Year Compounding: Contributions occur throughout the year and are assumed to compound alongside the annual investment return rate.
- •Nominal Pre-Tax Values: Projections represent pre-tax, nominal account balances before future retirement distributions, taxes, or inflation erosion.
Ready to project your personal 401(k) retirement balance?
Use the free 401(k) Calculator to test your specific salary, current balance, elective contribution percentage, employer match rules, and target retirement age.