From the Season Announcements
Starting at the all-star break all teams in possession of over twenty-five million dollars will receive a weekly 10% tax to every dollar above the 25M mark.
So I would say that if you have 26M then you are taxed $100k, if you have 27M, you are taxed $200k, and so on. If you have 50M, you would get taxed 2.5M.
I have 1757 players for sale and I'm $25,835,360 in debt. Buy them at outrageous prices, or be selfish and make me go bankrupt. You decide, BB.