What to include in an IT support invoice
- Service period covered. The month the managed fee pays for, since it is usually billed in advance and the client's books need it in the right period.
- Users or devices covered. The count of seats, devices or servers the monthly fee is based on, so a new hire shows up as a quantity change, not a price rise.
- Support hours outside plan. Hourly break-fix work with dates and ticket numbers, kept apart from project work so neither blurs into one figure the client cannot check.
- Remote or on site. Whether each hour was worked remotely or at the client's office, because on-site time carries travel and often a different rate.
- After-hours time. Evening, weekend and emergency work at its own rate, with the time the call came in, as set out in the service agreement.
- Hardware with serial numbers. Machines, drives and network gear supplied, with model and serial numbers, which the client needs for warranty claims and asset records.
- Software licenses and renewals. Subscriptions and licenses resold to the client, with the term and seat count, so a renewal is not mistaken for a new charge.
- Agreement and business details. Your business details and the service agreement reference, so the client can check each line against the agreed scope and response times.



