Terms of Use

Last updated: November 8, 2026

The license

KitRoost grants you a free, worldwide license to use every tool on this site for personal and internal business purposes: calculate, screenshot, print, share links, embed the shareable result in a family group chat or an accounting binder. That's the point of the site.

What these tools are, and are not

Every tool is an educational estimate built from published public data and standard formulas. They are not tax, legal, financial, medical, veterinary, engineering, or immigration advice. A tool that agrees with your accountant is luck; the tool is the shape of the math, the professional is the binding number. Act on filings, bids, medical decisions, and legal deadlines using the professional, not the page.

No warranty, limitation of liability

The site is provided "as is", without warranty of any kind, express or implied, including accuracy of constants, availability, and fitness for a particular purpose. Data sources change (tax years roll, survey prices move, regulations get amended); pages show their source year, and pages may lag reality. To the maximum extent permitted by law, KitRoost and its authors are not liable for any loss arising from use of these tools, including decisions made on their numbers.

Fair use of the site

• Link freely. Links, embeds of shareable result links, citations of the pages: welcome, no permission needed.
• Don't mass-scrape the tool pages to republish them as your own site (the UI + copy + formula sections are the product, © 2026 KitRoost). Quoting a formula line with attribution is fine.
• Don't automate load: no scripts hammering the site; it's a calculator shelf, not an API. A public API is a future possibility, until then, the URL-encoded shareable links are the interface.

Trademarks & data

KitRoost™ is the site's name. Third-party names (Google, YouTube, Mediavine, Schengen, FLSA) are used descriptively; their data belongs to their publishers, cited in each tool's math-work section.

Changes

These terms may update with the site; the "last updated" date above is the version line. Continued use after a change means acceptance of it. Questions: contact page.