CalculatorCentral
/Finance

401K Calculator

Project a 401(k) using eligible contributions, assumed returns and a withdrawal-tax scenario.

How It Works

Contributions occur at year-end and remain constant; future tax rules and limits are not forecast.

2026 first-year personal limits: IRA $7,500 plus $1,100 age-50 catch-up; 401(k) $24,500 plus $8,000 age-50 catch-up, or $11,250 at ages 60–63 if the plan permits.

Scope and Limitations

  • You must verify earned-income eligibility, IRA income phaseouts/deductibility, other-account contributions and employer-plan restrictions. Traditional-account after-tax value assumes fully taxable withdrawals; Roth value assumes qualified distributions. Employer match is entered as a ratio to eligible contributions, with full vesting assumed.

Reference Sources

FAQs

How does this calculator work?

Contributions occur at year-end and remain constant; future tax rules and limits are not forecast.

What assumptions should I check?

You must verify earned-income eligibility, IRA income phaseouts/deductibility, other-account contributions and employer-plan restrictions. Traditional-account after-tax value assumes fully taxable withdrawals; Roth value assumes qualified distributions. Employer match is entered as a ratio to eligible contributions, with full vesting assumed. 2026 first-year personal limits: IRA $7,500 plus $1,100 age-50 catch-up; 401(k) $24,500 plus $8,000 age-50 catch-up, or $11,250 at ages 60–63 if the plan permits.