Most online calculators are wrong, outdated, or oversimplified. We verify every formula against IRS publications and current state tax regulations — then have a Certified Public Accountant review it before publication.
Our flagship tool, built first because California has the most complex paycheck math in America.
The only calculator with the new $184,500 Social Security wage base, the 1.2% SDI rate (no cap as of 2024), CA Mental Health Services Tax, and California's daily overtime rules. Reviewed by a CPA.
14 categories of finance calculators, prioritized for what Americans actually search for. We're building these out methodically — quality over speed.
Calculate take-home pay for top states with state-specific tax brackets, SDI, and overtime rules.
State-by-state sales tax with combined city and county rates accurately calculated.
Property tax estimates by state with accurate millage rates and homestead exemptions.
Quarterly estimated taxes, S-Corp vs LLC, home office deduction, and self-employment tax.
BRRRR, cap rate, cash-on-cash return, 1031 exchanges, and Airbnb ROI calculators.
Biweekly payments, recast vs refinance, PMI removal, ARM resets, and rent vs buy.
FIRE number, Coast FIRE, emergency fund, net worth, and Roth conversion ladder.
Capital gains (FIFO/LIFO/HIFO), staking yield, tax loss harvesting, and DeFi APY.
Investment, retirement, credit & debt, insurance, auto loans, student loans — see the full roadmap.
Other calculator sites hire content writers. We hired a CPA. Every calculation is verified against primary sources before publication — and updated immediately when laws change.
We cite IRS publications, state tax authority guidance, and federal regulatory bodies — never other websites or aggregators.
Every calculator is reviewed by Benjamin Thomas, CPA, MST — Senior Associate at Forvis Mazars US — before going live.
When the IRS publishes new wage bases or California changes SDI rates, our calculators update within days — not next year.
Use any calculator without registration, email walls, or display ads in your way. Clean tools, transparent calculations.
Most calculator sites optimize for ranking. We optimize for accuracy. The difference shows up in your actual paycheck.
When we say a calculator uses "2026 California tax brackets," we link directly to the California Franchise Tax Board publication that defines them. When we say "Social Security wage base of $184,500," we cite the SSA fact sheet. Every number has a source.