Said like that, yes. Sign up bonuses are the largest deductions.
Deductions happen at the time they are made. If you make a deposit, the deposit fee is added to deductions. If a $20 bonus is released into your account, the sum is added to bonus deductions.
Information on all Full Tilt deductions and the exact amounts can be viewed from the
Rake Tracking detailed view:
http://www.rakeback.com/raketracking...?room=fulltilt