The tax on vbookie winnings is in place.

All winnings are taxed .05

So if you win a bet where you placed 100.00 on it with 1-1 odds your take home would be 195.00 and the bank would get 5.00

Sadly this was not in place when the cowboys were still in the running. Seeing i lost over 4billion on bets with them, i'm sure our deficit would be paid off completely..