Prepaid expenses, also known as pre-payments, refer to expenses that have been paid in advance of their due date. They are one of the types of assets on a company's balance sheet or statement of financial position. They are treated differently from other expenses, as the company recognizes their debt or obligation to make future payments over a period of time.

Prepaid expenses occur when a company pays for goods or services before they are actually used. For example, if a company needs to use a storage facility, they may pay the monthly storage fee upfront, in order to secure the space and receive a discounted rate.

Prepaid expenses can help a business save money, particularly when they are paid in advance of due dates. For instance, companies can take advantage of early-payment discounts, save on interest, and receive better overall terms. They can also help spread out costs over a longer period, thus reducing their current and near-term expenses.

As far as accounting is concerned, prepaid expenses are recorded when they are paid, as either a current asset or a long-term asset depending on the length of time until the services or goods will be consumed. For expenses that are due within a year, the company will recognize them as a current asset. For instance, if a company pays for rent for a year, it will recognize the prepaid expense in the current asset section of its balance sheet.

On the other hand, for expenses due beyond one year, the company would recognize it as a long-term asset. In this case, the company would spread the payment out over the timeline in which it will be used.

The prepaid expense is also factored into a company’s income statement. Until the item or service is used, the expenses are not charged to the income statement. Rather, the prepaid expenses are treated as an asset on the company's balance sheet, and then gradually converted into a regular expense on the income statement as the business pays for the asset over time.

In conclusion, prepaid expenses are costs that have been paid in advance, either to save money or to spread out costs. They are treated differently from other expenses and are recorded differently for accounting purposes. For businesses, properly tracking and treating prepaid expense is a necessary function for budget control, cash-flow management, and the accurate presentation of financial records.