Analysts and investors sometimes focus more on cash earnings than GAAP/IFRS earnings. To get a sense of the extent to which investors focus on cash earnings for the company you are modeling, look at a few analyst/broker research reports on the company or peers in the company’s industry if not public. Cash earnings add back non-cash expenses, such as amortization and stock-based compensation, as well as one-time charges. Depreciation is not backed out, however, because it is a real expense that is a proxy for capital expenditures.