About ThaiUtility

ThaiUtility is an independently maintained website providing free calculators and document tools for people working with numbers in Thailand. It is not a government service and does not claim official status.

Who maintains the site

The site is maintained under the ThaiUtility publisher identity. No named expert, professional credential, company registration, employee count, or office address is claimed unless it can be independently verified.

How calculations are checked

Calculation functions are separated from page content and tested with normal, boundary, zero, invalid, and rounding cases. English and Thai pages call the same functions.

Sources, review schedule, and corrections

Changeable tax, employment, finance, and electricity claims use responsible Thai authority sources. They are reviewed when an authority publishes a change, before a supported rate period expires, or when a reproducible error is reported. Each affected tool states its last review and the conditions that trigger another review.

Report an error to [email protected] with the page URL, inputs, observed result, expected result, and a relevant source, but do not send sensitive information.

Scope

Results are calculation and educational aids, not professional tax, legal, accounting, investment, credit, employment, or utility-provider advice. Verify important decisions with the responsible authority, provider, contract, or qualified professional.