Q. How do I bill people for consulting, and how often?
A. You can bill the client as often as you like.
The more frequently the better. Remember to put your billing conditions in any proposal or contract you have with them.
You can bill based on work completed, or on elapsed time.
Whenever you can, ask for payment up front (eg 50% up front and weekly invoices till completion).
If you need an example, download our sample invoice template .