Guides

Property tax appeal guides

How assessments work and how to appeal one, written by Appealmetrics Research from statutes, state revenue departments and county assessors. Each guide lists its sources.

How property tax assessments work

How your county turns market value into a tax bill: the valuation date, the assessment ratio, caps and exemptions, and where an appeal fits.

Property tax appeal deadlines by state

The deadline rule for a first-level property tax appeal in every state and DC, from 25 days after the notice to fixed dates like May 15, March 31 and June 30.

What is an assessment ratio?

The assessment ratio is assessed value divided by market value. What it is in each state, how ratio studies measure it, and how to use it to check your assessment.