who’s cheaper ups or usps depends on the specific shipping needs, package size, weight, and destination. USPS is often cheaper for smaller, lighter packages and for shipments within the U.S. for services like First-Class Mail. However, UPS can be more affordable for larger, heavier shipments, or for international deliveries. Businesses typically compare rates for both carriers based on the type of service required to determine which offers the best value for their needs.