What is Florida documentary stamp tax Florida? Documentary stamps are a tax upon conveyances on deeds. They are $7 per thousand. You also have documentary stamps on promissory notes and Florida. This is a way to raise revenue for the state of Florida and that we do not have any income tax or a state taxes. We raise the government raises income through the documentary stamps and also through sales tax. If you have any questions about documentary stamps, please give me a call at (727) 847- 2288.