Why I built this
Good decisions shouldn't be blocked by confusing rules. I turn official rates and formulas into tools anyone can use in seconds.
Money tools that just make sense
I build free, clearly-explained financial calculators that help people decide with confidence.
- 2,100+ calculators
- nine countries
- zero sign-up
How it works
Every calculator uses your country's real rules and runs in your browser: enter your numbers and get a clear, explained result.
Up-to-date data
Every rate and threshold comes from official sources and is dated and monitored, so results stay current.
Who's behind this site
One person, publishing in the open
I'm Taha Kheirandish, an economics student, and I publish this site myself. It's independent, not a bank, a broker, a lender or an adviser, and it sells no financial products. Nobody pays to have a calculator built, changed or ranked.
You can reach me through the contact page. I read every message and aim to reply within two business days. If you think a figure or a source is wrong, tell me which calculator and which figure: that's the fastest way to get it fixed, and the corrections policy sets out what happens next.
How the data works
Every number, sourced and dated
01
Where the numbers come from
Every rate, threshold, bracket, contribution limit and fee a calculator uses is stored as a parameter, together with the official source it came from, the date it takes effect and the reason it changed. None of it is written into the calculation code, so a figure cannot quietly drift out of step with the law. At the foot of any calculator there's a data-sources box listing every parameter the page used, its value, the date it applies from, and a link to where it was read from.
02
How I keep it current
Rules change on fixed dates: a new tax year, an indexation day, a budget. Each parameter carries the date it starts and ends, so the site serves the figure in force on the day you use it. An automated audit flags anything expired, about to expire, or stale, plus any source link that no longer resolves. Where a value has no official feed, I verify it by hand against the source.
03
What these tools are, and what they are not
These calculators produce estimates. They model the general rules of a jurisdiction, not your circumstances, and can't see the reliefs, allowances or agreements that apply to you specifically. They're a way to understand a decision and sanity-check an order of magnitude, not a substitute for advice. I don't provide personal tax, financial or legal advice. For a decision that matters, speak to a qualified professional in your own country, and confirm any figure against the official source linked.
04
Your privacy
The free calculators run entirely in your browser. The numbers you type are never sent to me, never written to a database, and never leave your device. No account is needed and there's no paywall on them. The privacy policy sets out exactly what is collected, why, and how long it's kept.
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