Advertising & Disclosure

How this site is funded

CA Tools may display third-party advertising to help cover the cost of running the site. Ad placements are clearly labeled "Advertisement" wherever they appear.

Editorial independence

Advertisers have no influence over a calculator's formula, the figures it uses, or the results it shows you. Every number is sourced from official California agencies, as described on our Data Sources page, independent of any advertising relationship.

Official links are never sponsored

When a tool links to an official government source (DriveClean.ca.gov, CPUC, DIR, etc.), that link is never a paid placement.