MileagePayTools.com publishes free educational calculators and original guides on everyday payroll-adjacent money math: IRS standard mileage rates, California overtime under Labor Code §510, simplified 1099 vs W-2 tax-burden comparisons, and multi-state sales tax estimates.
The site is published by Alex Rivera, an independent educational publisher. Alex writes and maintains the calculators, rate tables, and explainers on this site. MileagePayTools is not a CPA firm, law firm, tax advisor, enrolled-agent practice, payroll provider, or an affiliate of the IRS, SSA, California DIR/DLSE, or any state department of revenue.
What you will find here
- Calculators that run in your browser for mileage, California overtime, 1099 vs W-2 education, and sales tax estimates.
- Guides — twelve explainers live on /guides/ covering mileage logs, CA daily and double-time overtime, paycheck basics, sales vs use tax, and when a calculator can be wrong.
- Plain-language formulas and links to official sources wherever we can point to them.
Editorial and rate transparency
- Rate-bearing pages show a last reviewed date (currently 2026-10-02).
- When the IRS, SSA, California DIR, or a state DOR revises a published figure we use, we update the matching rate data and calculator copy.
- We prefer documented formulas and official citations over opaque scripts.
- We do not invent credentials, certifications, or client results.
- We do not promise income, AdSense earnings, tax savings, or guaranteed outcomes.
How to read this site
Everything here is educational. Estimates can miss exemptions, alternative workweeks, collective bargaining agreements, local tax districts, and other facts that only you (and a qualified professional) can verify. Please read the Disclaimer, Privacy Policy, and Terms of Use.
Contact
Email support@mileagepaytools.com or use the contact page.