Sales Expense is the sum of all costs involved in selling a product or service to customers. It includes research and development costs, promotional materials, advertising, travel expenses, sales team salaries, commissions, customer incentives, freight and delivery charges, and more. By accounting for these out-of-pocket expenses, businesses can keep better track of how much they’re spending on every sale. Tracking these costs also helps them manage their profits while still providing an optimal customer experience. In short, Sales Expense is a crucial metric for any organization hoping to succeed in its business operations.