What are some concrete examples of these deductions that people keep talking about? I'd actually like to know, so I can perhaps convince myself to get a CPA nex

What are some concrete examples of these deductions that people keep talking about? I'd actually like to know, so I can perhaps convince myself to get a CPA next year. The only deductions I have seen as a salaried person with some minor stock trades are things for home heating credits and such which I am always ineligible for on the basis of income.