I have a freelance client who told me they needed something in 2 days instead of the 8 they had given on a timeline the day before, and who then wanted a round of changes returned the same day I sent the proof. I have another client who offered two or three times my normal rate for me to do changes for her. "Emergencies" generally aren't a big deal as I'm extremely efficient with my design time, but I'd like to develop some rules for when my rate goes up and how much. What are your emergency terms? 1.5x normal rate? 2x normal rate? What timeline qualifies as an emergency? How do you communicate which rate you'll be charging with your clients?