True. It's a discount on the tax, but you don't get it all back. So, RSU = 100K (33K taxes), you get 67K after initial taxes. You donate 67K, you get 22K in t

True. It's a discount on the tax, but you don't get it all back. So, RSU = 100K (33K taxes), you get 67K after initial taxes. You donate 67K, you get 22K in tax credit. Government gets 11K in taxes even though you didn't see one penny from the RSUs.