Preparation of Monthly Payment Report?

Dear All;

1) While we are developing a Schedule, how we should be prepared for "Monthly Payment Reports"?
(Assume that each month we are having the Progress Percent as To Date / This Month / Last Month.)

2) Is there any formats to follow for prepararion of "Monthly Payment Report" whether our project is Lump Sum Contract, Unit Price + Contract or Cost Reimbursed Contract etc.

Regards