Charges and fees are the building blocks of most bills. Some are recurring, such as a monthly plan charge. Some are tied to usage, such as metered utility consumption or data overages. Others are one-time fees for setup, reconnection, delivery, equipment, service calls, or account changes. Credits, discounts, and adjustments can reduce the total but may be easy to miss.
A useful way to review fees is to ask three questions for each line item: Is it expected, is it correctly calculated, and is it still relevant? A recurring charge should match a service you still use. A one-time charge should match a specific event. A discount should match the promotion or agreement you were offered. A tax should be calculated against the correct taxable amount.
This topic brings common charge types together so you can quickly understand what a label usually means. The related glossary pages explain individual terms, while the guides show how to investigate unfamiliar fees before paying.