I've finally decided to make the jump to requiring a minimum number of hours per month from each client. So now I'm trying to figure out how to word it to my current clients.

I'm planning on telling them that they will only be billed once a month (I bill every two weeks now) and they will have the peace of mind of knowing exactly how much they will be spending every month (unless, of course, they go over).

I want them to feel that both of us benefit from the decision - and I truly believe that. My clients are so busy that any process I can streamline for them will help make their lives easier.

Anything I'm missing?