How we check our tools
Last updated 1 October 2026
Most of Omnikit's tools do a fixed job, such as converting a file or formatting some code, and are right or wrong in ways a test can catch. The money and scheme calculators also depend on figures that someone else sets: tax slabs, interest rates, exemption limits. This page says where those figures come from, how every tool is tested, and what happens when one is wrong.
Official sources first
A rate, slab or limit is taken from the body that sets it: a government department's own page, a notification, the gazette, or a regulator's circular. Each figure is written into the tool's code next to the source it came from and the date it was checked, so anyone reviewing the tool can read the same document. Figures repeated on other websites are not used as the source.
When a figure cannot be found on an official source, the tool does not guess it. Either the tool asks you to enter that figure yourself, or it is held back from the site until the source has been read.
Country, state and year
Tax and scheme rules differ by place and change over time, so these tools say which country, and where it matters which state, they apply to, and which tax year or period the figures belong to. A rate that changes every quarter is shown with the quarter it belongs to.
Re-checking figures that change
Figures that are known to change are re-checked on a schedule the site keeps: small savings rates when the government announces them each quarter, and tax figures after each budget. Scheme figures carry a note in the code saying what to read again and when. This is a schedule, not a guarantee: a rule can change between checks, so a result is only as current as the last check.
What a calculator includes
A calculator states what it takes into account and what it leaves out, for example whether a tax estimate includes surcharge and cess, or whether a maturity figure assumes the rate stays the same. Where a result depends on an assumption, the assumption is on the page rather than hidden in the code.
Testing before release
Before a tool is published, its page is opened in a real browser and its output is compared with an example worked out by hand. The calculations also have automated tests that run the same examples. On each release, an automated sweep opens every page on the site and checks that it loads, shows its tool, raises no errors and fits a phone screen.
Privacy by design
The tools run in your browser. Files you drop in and numbers you type stay on your device. The few tools that exist to ask an outside service a question, such as a DNS lookup, say so next to the box and send only that question. The privacy page lists each one.
Corrections
If you think a figure, a formula or a result is wrong, tell us through the contact page. Say which tool, what you entered, what you got and, if you can, where the correct figure is published.
The report is checked against the official source. If the tool is wrong, the figure or formula is fixed, the source and checked date recorded with it are updated, and the case is added to the tool's tests. Corrections are not hidden: a changed figure carries the date it was corrected, and is not presented as if it had always been that way.
What the tools are not
The calculators give estimates from the figures and assumptions they state. They are not financial, legal or tax advice, and they do not know your full circumstances. For a decision that matters, check the result with the official source or a qualified adviser. The terms say the same.