Plain-language definition
A one-time charge is a non-recurring amount billed for a specific event, request, setup, correction, or service action.
Why it appears on a bill
It may appear for installation, activation, equipment delivery, technician work, account changes, late fees, or other events that do not happen every cycle.
What to check
- Match the charge to a specific date or request.
- Confirm it appears only once.
- Check whether the amount was disclosed in advance.
- Question it if you do not recognize the event.