7 calculators in this category
- 401(k) Growth CalculatorIRC §402(g) & §415(c) contribution limitsThis calculator projects what your 401(k) will be worth on the day you retire. It compounds your existing balance monthly, adds…
- 401(k) Employer Match CalculatorIRC §401(k), §401(a)(17), §402(g)Employer match formulas are written in a compressed shorthand — “100% of the first 3%, then 50% of the next…
- Roth IRA Growth CalculatorIRC §408A (Roth IRAs)A Roth IRA compounds without any annual tax drag and, once the distribution is qualified, pays out entirely free of federal…
- Traditional vs Roth IRA Comparison CalculatorIRC §219 (traditional IRA) & §408A (Roth)The choice between a pre-tax and a Roth contribution is a bet on one number: your marginal tax rate in retirement compared with…
- Roth Conversion Tax CalculatorIRC §408(d)(2); 2025 IRS rate scheduleA Roth conversion is voluntary income. You choose the amount, and that choice sets the tax bill, so the only question worth…
- Solo 401(k) Contribution CalculatorIRS Publication 560; IRC §415(c), §402(g)A one-participant 401(k) lets you contribute twice — once as the employee and once as the employer — which is why…
- 401(k) Early Withdrawal Penalty CalculatorIRC §72(t)Cashing out a retirement account before age 59½ costs you three separate amounts: ordinary federal income tax on the whole…
Which one do you need?
- 401(k) Growth Calculator
- Project your 401(k) balance at retirement from salary, deferral percentage, employer match, annual raises and expected return, with a year-by-year schedule.
- 401(k) Employer Match Calculator
- Calculate your employer's 401(k) match for any tiered formula, the deferral rate that captures it in full, and the free money you are leaving behind.
- Roth IRA Growth Calculator
- Project the tax-free value of your Roth IRA from contributions, return and time, and see how much the tax exemption is worth against a taxable account.
- Traditional vs Roth IRA Comparison Calculator
- Compare the after-tax retirement value of pre-tax and Roth contributions, including the side fund from your deduction, and find your break-even tax rate.
- Roth Conversion Tax Calculator
- Estimate the federal and state tax on a traditional-to-Roth IRA conversion, apply the pro-rata rule, and see how much room is left in your bracket.
- Solo 401(k) Contribution Calculator
- Work out the maximum solo 401(k) contribution from Schedule C profit or S-corp wages, including the employee deferral, employer share and deduction.
- 401(k) Early Withdrawal Penalty Calculator
- Calculate the real cost of cashing out a 401(k) or IRA early: federal and state income tax, the 10% additional tax, net cash, and the growth you give up.
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