The bank charges for TT is depending on the bank, different bank different rate.

For in/outward TT normally will go thru 3rd party. ie: from M'sia transfer to China/Taiwan the money will send to New York Citi bank then from there transfer to China/Taiwan. so TT it take 1-2days reach.

The intermediary normally will deduct some fee(USD10-25) from the money once the money reach the beneficiary the local bank will charges another fee.