Term and termination The normal term of a project will begin with the signing of a written agreement and end with the client’s acceptance of your completed services. If something happens in the meantime to make cancellation necessary, the agreement must describe in advance the process for doing that, from notifi cation through calculation of your fi nal invoice. That fi nal billing might cover time and materials for actual services performed through the date of cancellation, or it might be a lump-sum cancellation fee, or perhaps a combination of the two. Cancellation also raises questions about ownership.