About Domus Day
What this site is for, who it is for, and what it refuses to do
What this is
Moving out of a state is easy. Ending its tax residency is a separate act, and it happens on paper. A state keeps treating someone as a resident until the record shows otherwise, and what counts as “otherwise” is set by that state’s statute, its regulations, and how its revenue department reads them.
Domus Day publishes those rules, state by state and route by route: 25 departure guides, 106corridor guides composed from one state’s exit rules and another’s entry steps, an arrival guide for each destination, and a general explanation of the two tests every state applies — 167 pages built from 38 sourced state records.
The name is Latin. Domus is the home — the thing every residency test is ultimately arguing about.
Who it is for
Someone mid-decision or mid-move who has real money riding on whether the move counts, and who wants the rules rather than reassurance — the day thresholds, the domicile factors, the filings, and the evidence a state asks for when it looks.
It is written for that reader first, and built to hold up to a second one: accountants and advisers who send a page to a client. That is why every claim carries the source it came from and the date it was checked, and why the guides link out to the statute rather than keeping the reader here.
What it refuses to do
No outcome language. Nine patterns covering the vocabulary of certainty are blocked automatically from both the data and the rendered page, and the build fails on any of them. Nothing here promises a move will hold up, because nothing can.
No advice. The guides describe what statutes and agencies say. They do not tell anyone what to do, and residency turns almost entirely on particular facts that a general page cannot see.
No invented proof. There are no testimonials, no case studies, no user counts, and no audit-outcome claims on this site, because none exist to report. Where a figure has not been verified against its primary source, the line is left out and said to be left out rather than estimated.
No fear-marketing. The competing material in this category mostly sells a service by making the reader afraid. The mechanism here is the opposite: counts, not conclusions; sources styled as content rather than hidden in a footer.
Who writes it
Records are attributed to DomusDay Research, which is the editorial process described on the methodology page — sourcing to primary text, schema validation, a language denylist, and a review date on every record.
No individual credential is claimed. Nobody associated with this site holds themselves out as a certified public accountant, an attorney, or an enrolled agent, and nothing here should be read as coming from one. If a credentialed reviewer joins, the reviewer line on every affected page will name them and their credential.
Not legal or tax advice
This is an informational reference. It is not legal or tax advice, it does not create any professional relationship, and it cannot account for the facts of a particular move. Rules change; the official source linked on every page governs over anything written here.
For a decision with real money attached, the right next step is a professional who can look at the actual record.