There are three major types of financial expenses: Fixed, Variable, and Periodic. Fixed expenses are expenses that stay more or less the same for a long time, like office rent or vehicle lease payments. Variable expenses change from month to month, such as utilities, meals, and entertainment. Periodic expenses are expenses that happen rarely, such as car repairs or an emergency trip. Some popular expense categories you’ll see on many expense tracking apps include benefits, education, office supplies, meals, entertainment, utilities, transportation, marketing, and team building, etc.