Terms of Use

By using Schedule 1-A Tools you agree to these terms. They are written in plain language on purpose.

What this site is

Schedule 1-A Tools provides free calculators, checkers, and explanations for the US federal deductions for tips, overtime, car-loan interest, and seniors (Schedule 1-A), for tax years 2025 through 2028. It is an independent informational website. It is not affiliated with the IRS, the US Treasury, or any government agency, and it is not a tax preparation service.

Information, not advice

Results are estimates based on the rules cited on each page and the figures you enter. They are not a tax return, not a filing, and not professional tax, legal, or financial advice. Your actual deduction is determined by your complete tax situation and the return you file. Verify important figures against the official IRS sources linked on each page, or consult a qualified tax professional.

Accuracy

We verify every rule against primary IRS sources and record the verification date on each page, and we keep a public corrections log on the Accuracy & Sources page. Tax law and IRS guidance can change; we update pages when that happens, but we cannot warrant that every page is complete or current at every moment, and we accept no liability for decisions made in reliance on these tools.

Acceptable use

Use the tools for your own tax preparation and research. Do not misuse the site, attempt to disrupt it, or present its output as an official IRS determination.

Changes

These terms may be updated; the current version always lives on this page. Last updated: October 26, 2026.