Free · No account required · Updated 2026
Free Financial Calculators
Built for Americans
Instant, IRS-accurate answers — from tax savings to payroll math. No sign-up, no ads, just results.
Most popular calculators
Business
S-Corp Savings Calculator
Find out how much you’d save by converting your LLC to an S-Corp
Payroll
Property Tax Calculator
2026 policy update — calculate your real overtime take-home pay
Marketing
Retirement Savings
Return on ad spend across Google, Meta, TikTok & more
Payroll
Nanny Payroll Tax Calculator
Household employer payroll taxes made simple
Debt
Solar Savings Calculator
See how much you’d save moving debt to a 0% intro APR card
Energy
Insulation Savings Calculator
Estimate annual energy savings from home insulation upgrades
LEARN
Guides & Comparisons
TAX GUIDE
How US Income Tax Works — 2026 Guide
Brackets, marginal vs effective rate, FICA, deductions & 7 ways to reduce your tax bill.
📖 12 min read
S-CORP GUIDE
S-Corp Taxes Explained — Owner's Guide
How S-Corp saves SE tax, reasonable salary, distributions & how to elect status.
📖 15 min read
RETIREMENT GUIDE
Retirement Planning — Complete 2026 Guide
401k, IRA, Roth IRA, HSA limits, the 4% rule & target savings benchmarks by age.
📖 14 min read
DEBT GUIDE
How to Pay Off Debt — Avalanche, Snowball & More
Two proven methods, how minimum payments trap you & the right order for multiple debts.
📖 10 min read
Why MintyVault?
IRS-accurate formulas
Every calculation sourced directly from IRS publications and current US federal tax law. Updated annually.
Instant results
Client-side calculations with zero server round trips. Change an input, see your result instantly.
Full explanations
Every tool includes the formula, worked examples, and expert context — not just a number.