project management 101

Estimating: What and How to Charge

Estimating projects is a developed skill - it will mostly depend on your ability to properly estimate scope (how big is the project really?) and client management (how much time will it take to educate and control the client?).

When to invoice?

Invoicing expectations should be established prior to the start of work. A normal payment schedule is 30% upon approval of the proposal or Project Plan, 30% upon approval of the visual look and feel, and the remainder upon delivery of the final site. Be clear that any additional charges will be clearly identified and approved at any point in the development process where they apply and that those charges will be added to the final invoice.

source: http://www.web-redesign.com resource: http://www.pmi.org