1. Managerial accounting provides information to managers inside a company to help with planning, controlling, and decision making, while financial accounting provides information to external parties like creditors and regulators.
2. There are two main formats for the income statement - the traditional format which classifies all costs as expenses, and the contribution format which separates costs into fixed and variable categories to help managers.
3. The contribution format shows contribution margin and is more useful for management decision making as it highlights the impact of changes in sales volume on operating income.