What is the difference between an expense and a payment?

An expense is an outflow of resources, typically representing the cost of goods or services consumed by a business or individual during a specific period. It reflects the economic impact of transactions, impacting profit and loss statements. In contrast, a payment refers to the actual transfer of money or value to settle a debt or obligation, which can occur at different times from when the expense is incurred. Thus, while all payments can be considered expenses, not all expenses are immediately linked to a payment.