Our Methodology

How we research jurisdiction rules

Every jurisdiction rule on Astrilio is sourced directly from the authoritative statute, regulation, or government page — not from third-party summaries. Each rule links to its primary source so you can verify it yourself.

We record a Last Verified date for each pack. This is a factual claim: a member of the Astrilio team personally reviewed the source on that date. We do not claim rules are "reviewed by a professional" unless we publish the professional's name and credentials.

What we are not

Astrilio is an information aggregator and calculator tool, not a law firm or accounting firm. Nothing on this site constitutes legal, tax, or financial advice. Our calculators are for informational and planning purposes only. Always verify results with a qualified professional before making decisions.

How to report an error

Laws change. If you spot an outdated or incorrect rule, please email us at support.cosyslabs@gmail.com with a link to the official source. We will investigate and update the affected pack.