About SMB Math

SMB Math is a free collection of tax and business-finance calculators and guides for small business owners and high-income individuals with complex tax situations.

This site isn’t attached to a CPA firm, a financial advisory practice, or any professional-services business. There’s no contact form, no lead capture, and nothing for sale here — just tools and explanations.

Everything here is for informational purposes only and doesn’t constitute tax, legal, or financial advice. Every situation is different — talk to a qualified professional before acting on anything you read here.