You cannot deduct your union dues anymore.
Due to the new tax law change the Tax Cuts and Jobs Act, ( TCJA), for 2018 through 2025, Congress suspends all miscellaneous itemized deductions ( Form 2106) that are subject to the 2 percent of adjusted gross income floor. This change affects un-reimbursed employee expenses such as job-related travels, uniforms, union dues and the deduction for business-related meals and entertainment. You will not be able to deduct any unreimbursed employee expenses on your 2019 tax return.
