If a member itemizes their deductions when submitting taxes, union dues are a professional expense that can be included.

Dues are deducted in 2 different tax years, since they begin in the fall and continue into the new year.  When claiming these dues, the most accurate amount can be obtained from your final December pay stub. It should include YTD (year-to-date) union dues – each town/school has a different label for it.