Maryland Property Tax Appeal

Property Tax Appeal Business In Maryland season begins when property reassessment notices mailed to one-third of property owners in each county. Property owners have 45 days to file an appeal.

According to

Mid-February Deadline for appealing reassessment notices mailed the prior December (deadline date is on the notice and depends on the actual notice mailing date)
April 15 Deadline for filing business personal property returns or 60 day extension requests