Project Fee

A flat amount billed using a fee schedule or a percentage of total baseline project costs or revenue that can be billed during each billing cycle using a fee schedule or after the project is complete.

Retainer

A flat amount billed using a fee schedule. Retainer fee amounts are held on account and can be applied to billing amounts.

Retentions

A percentage of total baseline project costs that isn't billed until the project status is Completed. This fee is for Cost Plus and Fixed Price projects only.

Service

A flat amount billed using a fee schedule. This fee is for Time and Materials projects only.