AMTake Tools publishes calculators, converters and file utilities that people use to make real decisions — what tax they owe, what their loan will cost, what a health number means. This page explains how that content is made, checked and corrected, and who is responsible for it.
Who is responsible
AMTake Tools is owned and operated by Birbal Nag under the EaglesDigiTech banner, based in Sainthia, West Bengal, India. There is no editorial board and no outside ownership. Every tool and every article on this site is built, written or reviewed by the same person, and any error is his to fix. You can reach him at support@amtake.com.
How a tool is built
- The formula comes first. Before a calculator is written, the underlying formula is taken from a primary source — a government schedule, a standards body, a clinical guideline — not from another calculator website. Where sources disagree, we follow the one with statutory or clinical authority.
- The maths is tested against worked examples. Each calculator is checked against examples published by the source authority, or against figures we can verify independently. A calculator that cannot reproduce a known-correct answer does not ship.
- Edge cases are checked deliberately — zero values, very large values, and the boundaries between tax or rate bands, which is where calculators most often go wrong.
- The tool is used on a phone before release. Most of our visitors arrive on mobile, so a tool that only works comfortably on a desktop is not finished.
How we cite sources
Health and finance tools cite the authorities their formulas come from, linked directly so you can check them yourself. Across the site these currently include the Reserve Bank of India, the Income Tax Department, the GST Council, the Employees’ Provident Fund Organisation, the Centers for Disease Control and Prevention, the World Health Organization, the National Heart, Lung and Blood Institute, the American Heart Association, the American College of Obstetricians and Gynecologists, the NHS and the National Academies.
Where a tool has been checked against its sources, the page carries a visible line naming who reviewed it and when. Tools that have not been through that process do not carry the line — we would rather show nothing than claim a review that did not happen.
What we do not do
- We do not give advice. Our calculators show arithmetic and cite where the rules come from. Deciding what to do with the result requires a qualified professional who knows your circumstances. See our Disclaimer.
- We do not publish sponsored content or paid reviews. No one can pay to appear on this site, to be recommended by a tool, or to influence what a calculator returns. If that ever changes, it will be disclosed on the page in question and here.
- We do not invent numbers. Where a tool cannot do something — estimate a competitor’s backlinks, detect plagiarism across the whole web — it says so plainly instead of showing a fabricated figure.
- We do not use tracking beyond analytics and advertising, both of which are described in our Privacy Policy and Cookie Policy.
Keeping content current
Rates, slabs and clinical guidance change. When they do, the tool, its explanatory copy and its FAQ are updated together — a tool that calculates correctly while its surrounding text quotes an obsolete rate is still wrong. When we become aware that something on this site is out of date, correcting it takes priority over publishing anything new.
Reviewed pages show the date they were last checked. That date only moves when the page is genuinely re-examined.
Independence
This site is funded by advertising. Advertisers have no involvement in what we publish, which tools we build, or what those tools return. We do not accept payment for links, mentions or favourable coverage.
Telling us we got something wrong
If you find an error, please tell us — see our Corrections policy for what happens next. Reports of incorrect calculations are the mail we act on first.
Last updated: 30 July 2026.