A change in the corporate US federal income tax rate necessitates an adjustment to a company’s balance sheet deferred tax account. Stephanie Allen has been tasked with determining the projected effects of several “what if” changes in the corporate income tax rate on her employer’s (Software for Seniors, Corp.) and a peer’s DuPont ratios and earnings per share performance measures. This general experience-based case uses data created by the authors that generally model the proportionalities of various line items within the financial statements of some real-world companies. As such, the financial statement effects due to an income tax rate change explored in this case are reasonable. It is suitable for an undergraduate or graduate level financial reporting course or a financial statement analysis course.