§PlainStatute

Tools · Directory

Tools & Calculators

Ten free tools, two kinds: 2026 tax calculators, and legal checkers that turn the statutes we've already verified into a concrete answer for your situation. No sign-up, nothing stored.

Same data as the reference pages. Every checker reads the statute-cited state data; every tax figure names its source and year.

Tax Calculators

Estimates from the 2026 IRS figures and each state's Department of Revenue.

Paycheck Calculator
Estimate take-home pay after federal tax, FICA, and state income tax.
Income Tax Calculator
Your state income tax and effective rate on an annual income.
Capital Gains Calculator
Federal and state tax on a long-term capital gain.
1099 Tax Calculator
Self-employment tax and quarterly estimates for freelancers.
Sales Tax Calculator
Sales tax on a purchase: state base rate plus average local rate.
Tax Comparison
Two states side by side: income tax, take-home pay, and sales tax.

Built on the same statute-cited data as the topic pages they belong to.

Security Deposit Calculator
Your state’s deposit cap and the exact date it is due back.
Debt SOL Calculator
Whether the statute of limitations on a debt has likely run.
Final Paycheck Checker
The deadline your employer had to pay your final wages.
Car Seat Checker
Which seat stage your child needs under your state’s law.

How the tools relate to the reference pages

Each legal checker is the interactive half of a topic we publish: the deposit calculator runs on the security-deposit statutes, the debt SOL calculator on the limitations periods, and so on — the same cited data, applied to your dates and numbers. The tax calculators share one 2026 engine across paycheck, income tax, capital gains, 1099, and the two-state comparison. Every result is an estimate for general information, not legal or tax advice.