Screenwriting : Question about the font used in a treatment for your screenplay by Jaclyn Natoli

I wouldn't write one for a screenplay but if I did I would use the same font you use for a screenplay.

It doesn't have to be Courier New or Courier Final Draft, but use something clean and easy to read.

My recommendation would be Arial or something like that - easier to read big blocks of text than Courier.

regular old times new roman. but almost no one reads treatments anymore unless they ate specifically asking you to write one.