In this lesson, Nick Palazzolo, CPA, takes a deep dive into understanding "above the line" and "below the line" deductions and their significance on the tax return form. Nick begins by clarifying that "above the line" deductions are those that contribute to the calculation of Adjusted Gross Income (AGI), and "below the line" deductions come into play after AGI has been determined. He elaborates on how these deductions impact a taxpayer's liability and the importance of AGI in the overall tax landscape, with a variety of phase-outs and thresholds keyed to it. He reviews common deductions, such as educator expenses and self-employment tax, and explains their eligibility criteria. Moreover, Nick delineates between choosing to itemize deductions versus taking the standard deduction, and touches on the role of tax credits. With practical insights, he emphasizes the need to become well-acquainted with tax forms like the Form 1040, using it as a roadmap for navigating tax-related simulations (SIMs) and multiple-choice questions on the CPA exam.