A value-added service (VAS) is a non-core service or feature that businesses add to a core product or service before offering it to customers. The purpose of value-added service is to improve the customer experience and promote brand loyalty, which can increase income if done successfully.

The addition of value might thereby raise the price at which buyers are ready to pay for a product. Free delivery from some restaurants and free shipment from electronic companies are excellent examples of value-added services.