Why is depreciation and amortization added to net income?
Consequently, how does depreciation affect net income?
A depreciation expense has a direct effect on the profit that appears on a company's income statement. The larger the depreciation expense in a given year, the lower the company's reported net income – its profit. However, because depreciation is a non-cash expense, the expense doesn't change the company's cash flow.
Moreover, why is depreciation and amortization in the cash flow statement?
Amortization expense is a non-cash expense. Therefore, like all non-cash expenses, it will be added to the net income when drafting an indirect cash flow statement. The same applies to depreciation of physical assets, as well other non-cash expenditures, such as increases in payables and accumulated interest expenses.
The net income formula is calculated by subtracting total expenses from total revenues. Many different textbooks break the expenses down into subcategories like cost of goods sold, operating expenses, interest, and taxes, but it doesn't matter. All revenues and all expenses are used in this formula.