Payroll & SMB calculators

Free mileage, overtime, and tax estimate tools

MileagePayTools is an educational calculator hub for small businesses, contractors, and payroll-curious workers. Every tool shows the formula, cites official sources, and carries a clear disclaimer.

Published by Alex Rivera · Rates last reviewed: 2026-10-02

Formulas on the page Math is explained in plain English — not buried in JavaScript alone.

Official cites IRS, CA DIR/DLSE, SSA, and state revenue agencies linked where rates come from.

Estimates only Not tax, legal, or payroll advice. Verify before you file or pay.

Reviewed 2026-10-02 Rate tables carry a last-reviewed date for mid-year updates.

Calculators

Four client-side tools for common SMB and payroll questions. No account. Calculations run in your browser.

Hero · 2026

IRS Standard Mileage 2026

Split H1/H2 rates: business, medical/military moving, and charity. Force the travel period so you don’t mix mid-year rates.

Open calculator → California

CA Overtime Pay

Labor Code §510 nonexempt model: daily 1.5× / 2×, weekly OT, and 7th consecutive day premiums.

Open calculator → Educational

1099 vs W-2 Compare

Side-by-side tax burden sketch (SE tax ≈ 15.3%). Does not classify your job.

Open calculator → 10 states

Sales Tax Estimator

State rates plus optional approximate local averages for CA, TX, FL, NY, WA, IL, PA, OH, GA, NC.

Open calculator →

Why this hub exists

Mileage reimbursements, California daily overtime, contractor vs employee tax mechanics, and sales tax estimates are everyday questions for freelancers and small employers. Official publications are authoritative — and dense. These calculators translate published rates and statutes into working estimates you can check against the source.

We do not promise income, tax savings, or “IRS-approved” outcomes. We do show the math, link the notice or statute, and stamp a review date when rates change mid-year (as 2026 mileage did).

Looking for deeper explainers? See the guides hub for explainers on mileage, overtime, contractor paperwork, and more—or read our disclaimer and editorial policy.