Michael Beloff, the lawyer who headed the tribunal, announced that Butt, 26, was banned for 10 years with five of them suspended.
Asif, 28, was ruled out for seven years -- two of which are suspended -- while 18-year-old Amir was banned for five.
Pak trio charged with corruption offences
News of the bans came a day after British prosecutors announced the trio would face criminal charges over their part in last year's spot-fixing scandal, specifically over their actions in the fourth cricket test against England at Lord's.
Britain's Crown Prosecution Service said the trio, along with 35-year-old sports agent Mazhar Majeed from Croydon, England, had been charged with conspiracy to obtain and accept corrupt payments and with conspiracy to cheat.
The trio have denied spot-fixing, the offence of pre-arranging individual events within a match which may not affect the result.