Important Dates

January 1
Date of Assessment

February 1
Filing for most exemptions, see credits and exemptions for additional information

April 1
Assessors complete assessments and notify taxpayers

April 2 through April 25
Property owner may request an informal review of their assessment by the assessor.

April 2 through April 30
Protest period for filing with the local Board of Review

May 1 through 31
Board of Review meets each year

July 1
New Assessment year
Period for filing Homestead Credit and Military Exemption

November 1
Deadline for Family Farm Tax Credit

October 9 through October 31
Protest period for filing with Board of Review on those properties affected by changes in value as result of the Director of Revenue Equalization Orders (odd numbered years)

County Courthouse

220 N. Washington Ave.
Mason City, IA 50401
Contact · Report a Concern

Courthouse Hours

M-F 8:00 a.m. to 4:30 p.m.
Closed Holidays
Department Hours May Vary