Property tax appeals by state

You can appeal your property assessment when your home is valued too high — but the deadline, the body you file with, and the rules differ by state. These guides give each state's deadline, filing body, assessment ratio, and official links. Information only, not legal advice.

• Texasabout 1.40% median rate · protest deadline: May 15, or 30 days after your Notice of Appraised Value is mailed — whichever is later.
• Illinoisabout 1.95% median rate · appeal deadline: Township-specific. County Board of Review windows open on a rolling calendar (Cook County typically begins mid-year and runs through fall); a further appeal to the state PTAB must be filed within 30 days of the Board's written decision.
• New Jerseyabout 1.9% (among the highest in the nation) median rate · appeal deadline: April 1 (received, not postmarked); May 1 in revaluation towns; January 15 in Burlington, Gloucester, and Monmouth counties. Appeals to the Tax Court are due within 45 days of the County Board judgment.
• Californiaabout 0.70% median rate · assessment appeal deadline: July 2 through September 15 (or November 30 / December 1 in counties that don't mail assessment notices to all owners by August 1). Supplemental assessments: 60 days from the supplemental notice.
• Floridaabout 0.74% median rate · petition deadline: Within 25 days of the date your TRIM (Truth in Millage) notice is mailed — typically in August. Exemption-denial appeals: 30 days from the denial notice.

Not sure where to start? Check whether your home looks over-assessed →