Bill a flat fee instead of by the hour

Almost everything OneTerp bills is quantity times rate: hours times an hourly rate, miles times a mileage rate. A flat charge is the exception, a single dollar amount for the whole job that does not move with how long the job runs. Two cases drive it: an on-call fee of a set amount for the shift whatever the hours turn out to be, and an extra fee like video or editing work billed on top of the normal charge.

Step by step

1. 1Open Settings, Billing & Subscription, then Rate Differentials. Flat charges sit just below the per-hour differentials, because both answer the same question: what changes this job's price?
2. 2Add a charge and give it the name that should print on the invoice, for example "On-call fee" or "Tech fee".
3. 3Enter the whole-job dollar amount. This is not per hour.
4. 4Pick how it bills: "Instead of the hourly charge" replaces the job's hourly service charge (the on-call case), or "On top of the hourly charge" adds it to everything else (the tech-fee case).
5. 5Choose what makes it fire. The usual way is a tag: pick one or more tags, and any job carrying one of them gets the charge. You can instead have it apply automatically to every job in scope, or leave it manual and attach it to one-off jobs by hand.
6. 6Optionally narrow it to a single customer or billing group, so it only ever fires for their jobs. Leave both unset for a charge that is about the work rather than the client.
7. 7Use the "Check billing" preview on the booking form or dispatch card to confirm a job charges what you expect before it runs.