Question 63 of 75. An individual taxpayer who began amortizing an expense in a prior year may claim the amortization deduction in the current year By entering the amount of the deduction directly on the appropriate business schedule. By entering the amount of the expense as an adjustment to income on Schedule 1 (Form 1040). Only if they complete Form 4562, Depreciation and Amortization. Only if they complete Form 4797, Sale of Business Property.