Terms of use

Effective August 5, 2026

Educational use

TaxMathKit provides general educational calculations and information. It does not provide tax, legal, accounting or financial advice and does not create a professional-client relationship.

No filing guarantee

You are responsible for verifying inputs, rates, deadlines and results against current official material. Do not submit a return or payment solely from a TaxMathKit result.

Availability and accuracy

We work to maintain accurate formulas but cannot promise that every page is complete, current or suitable for every fact pattern. The service is provided as available without warranties to the extent permitted by law.

Acceptable use

You may use and link to the public calculators for lawful purposes. Do not interfere with the service, misrepresent its results as professional advice or use automated access in a way that degrades availability.