Iv'e got mostly residential full time customers signed on a service agreement ( contract) with 12 equal payments over 12 months. Half pay on the 1st and the other half pay on the 15th of each month. So every two weeks I make a deposit. I was once told by another lawn care owner that the less invoices a customer receives the better and he has all his full time clients pay quarterly. Just wondering what everyone else does and why.