Save Answer The Manama Co. is considering adding a new product line that is expected to increase annual sales by $342,000 and expenses by $236,000. The project will require $21420 in fixed assets that will be depreciated using the straight-line method to a zero book value over the 9-year life of the project. The company has a marginal tax rate of 34 percent. What is the depreciation tax shield? in 4 of 17