Contact
Get in touch
National Calculators is built and maintained by Vikas Dulgunde, a software engineer who writes the calculators, sources the tax and benefit figures behind them, and checks each one against official references before it goes live. When you get in touch, your message reaches the person who can actually fix the figure or build the tool, not a support queue.
We read every email and aim to reply within a few working days. Corrections to a tax rate, threshold or formula are treated as urgent and usually go out in the next deploy once verified against the official source.
The fastest way to reach National Calculators is by email:
Useful things to get in touch about:
- Corrections. If a figure looks wrong, tell us the calculator, your country, and what you expected. Corrections are prioritised.
- Suggestions. A calculator or country you would like to see.
- General questions about how a calculation works.
For the fastest fix on a correction, include four things: the calculator page, the exact inputs you entered, the result you got, and the result you expected with a link to the official source that supports it. With those we can usually reproduce the case against the calculator's reference examples the same day and either ship a fix or explain where the difference comes from, most often a deduction, credit or local rate the estimate deliberately leaves out and declares on the page. You can write in English or in any language the site publishes: Deutsch, Français, Español, Italiano, Nederlands, Polski, Svenska or 日本語.
National Calculators covers salary and take-home pay, income tax, VAT, social contributions, child benefits, mortgages and affordability, cost-of-living comparisons and everyday date and unit maths across more than twenty countries. Every tax and money figure is restated from an official source, such as a national revenue authority, central bank or statistics office, and dated to the tax year it applies to. If one has moved, or a result looks off for your situation, a short email with the calculator name and your country is the quickest way to get it checked and corrected.
There is no contact form because the site does not collect personal data. Email keeps it simple and private.