Privacy note
This site is a set of calculators, not a service with accounts. That makes the privacy situation unusually simple, and it is written here as it actually is rather than as a template.
What is not collected
- No account, no login, no email address, no password.
- No cookie of our own. The calculators set nothing and embed no analytics or measurement script of ours.
- No salary, state, filing status or contribution input is sent to a database. The calculator holds your inputs in the page while it is open; close the tab and they are gone.
- No file upload, no payroll import, no bank or card data.
What is technically processed
Like every website, serving a page requires the web server to see the request: the URL you asked for, your IP address, the browser you used, and the time. A hosting provider may keep ordinary access logs for security and abuse prevention. Those logs are not used to build profiles and are not combined with anything you type into a calculator.
Outbound links
The sources page links to revenue agencies and statute publishers. Once you follow one of those links you are on that site, under its rules — not this one.
Children
The calculators are aimed at people checking a payslip or a job offer. They are not directed at children and collect nothing from anyone.
Contact and changes
Questions about this page, or a request about data that concerns you, can go to editor@numurio.com. If a future version adds analytics or accounts, this page is rewritten before that ships, and the change is described here rather than left in a changelog nobody reads.
Related: about · methodology · contact · financial disclaimer