Additional charges refer to extra fees that may be added to the base cost of a product or service. These charges can arise from various factors, such as taxes, shipping costs, or service fees. Understanding these charges is important for consumers to accurately assess the total price they will pay. Common examples of additional charges include sales tax, delivery fees, and installation costs. Businesses often disclose these charges during the purchasing process, but it's essential for customers to read the fine print to avoid surprises at checkout.