United States day-count rules
Spending time in United States? The rules below can affect tax residency, your right to remain, visa and travel limits and the path to citizenship. This page brings United States’s day-count rules together in one place — each explained in plain English, with links to the official sources.
For information only. These pages are a plain-English summary of publicly available rules, not tax, legal, or immigration advice. Rules change and depend on your personal circumstances — always confirm with the official source and a qualified professional before acting.