Guides and data
The rules behind the paperwork, explained.
Every guide is checked against official sources, shows the date it was last verified and links to each source. New guides are published as each profession’s tools go live.
Mechanics lien deadlines in 10 states: notices, liens and lawsuitsChecked against state statutes · Updated October 21, 2026The Medicare 8-minute rule explained, with worked examplesFact-checked against CMS sources · Updated October 21, 2026
IRS CP2000 notice: what it means and how to respond within 30 days
Security deposit return deadlines for all 50 states and DC
AI hallucination sanctions tracker, updated monthly
How to appeal a denied prior authorization, step by step
IFTA quarterly filing for owner-operators: deadlines, penalties and audits
YouTube’s inauthentic content policy: the three categories explained