Flexible and is mutually discussed/agreed. But we prefer the Work bound payment terms, I mean, Pay as you go and see the progress.
20-25% upfront payment or in escrow
20-25% Design Approval, and after the first demo on our Test Server.
20-25% after completing and launching the BETA version of the final project on our Test Server.
20 -25% after implementation on the live domain, acceptance testing by the client, and bug removal.