Can I deduct union dues or professional membership fees on my Ontario tax return?

Yes. Annual union dues and professional membership fees required to maintain a professional status recognized by statute are deductible from employment income on your federal T1 return. This deduction flows through to your Ontario provincial tax calculation as well, because it reduces your net income, which Ontario uses as the starting point.

Qualifying amounts include: dues paid to a trade union, contributions to a parity or advisory committee, and fees for professional bodies if membership is required by law for your profession (for example, Law Society fees for lawyers, or College of Physicians and Surgeons fees for doctors). Optional professional association memberships that are not required by law generally do not qualify.

Your employer often lists union dues on your T4 slip in Box 44. Professional fees not shown on the T4 are claimed on Line 21200 of your T1 return. Keep receipts or invoices as CRA may request documentation. Dues or fees for clubs, recreational associations, or voluntary industry groups — even if work-related — are not deductible under this provision.