I am pretty sure all the fines given to players are donated to tax deductible charities, so when you are fined you just get the money back when you do your taxes anyway.
Honsestly, I've not watched either of the last two games, and I haven't missed it.
It's not the game I grew up playing.
http://www.crainsdetroit.com/article/20130910/NEWS/130919987/I don't think fines count as tax deductions.
They get some of the money back as write offsUnder federal tax law, on-field NFL fines are considered a business expense, and thus tax-deductible. Fines for off-field issues, such as arrests, are not tax-deductible.