10 Polite Ways To Say, “Sorry. I Don’t Work For Free.”
Say you’re over-booked on pro-bono work
“My pro-bono workload is currently fully booked up and I cannot afford to take on any more unpaid projects at this time.” That’s an excellent way of reminding this person that A) what they are asking for is essentially volunteer work from you. If they have a budget for your services, they should be a little embarrassed for asking for it for free. It also says that B) you do have to make money, and can only take on so much unpaid work. (You may secretly not do pro-bono work. That’s none of their business…)