Projects are often billed on a one-third, one-third, one-third method. Meaning that you bill 1/3 of the total amount up front, then 1/3 somewhere in the middle, and then finally 1/3 when the project is delivered.
Here’s an easy way to do that. Scroll down for the video
You just set up a milestone configured for a percentage of the project amount. Let’s say the deal is for $30,000. The milestone is set up for 33.333%. Multiple $30,000 times 33.333% and you get $10,000 (rounded up).
Each of the three invoices can use the same milestone. That makes fixed-price billing easy.