Chasing 123 for victory, the Aussies were all out for 62 in 13.4 overs to give the Tigers a memorable 4-1 series win
Australia got bundled out for 62, their lowest score in T20Is, as Bangladesh recorded a comprehensive 60-run win in the fifth and final match to take the series 4-1.
Chasing 123 for victory, the Aussies were all out in 13.4 overs at Mirpur Sher-e-Bangla National Cricket Stadium Monday to give the Tigers a memorable series win.
Shakib al Hasan starred with the ball taking four wickets conceding just nine runs, while Saifuddin and Nasum Ahmed picked up three and two scalps respectively.
Only captain Matthew Wade (22) and Ben McDermott (17) reached double digit among the Australian batsmen.
Earlier, Bangladesh posted 122 for the loss of eight wickets in their 20 overs, opener Mohammad Naim top-scoring with 23.
Skipper Mahmudullah had won the toss and elected to bat first.
The Tigers made two changes to the playing XI from the fourth T20I, bringing in Mosaddek Hossain and Saifuddin in place of Shamim Hossain and Shariful Islam.
The Aussies also made two changes with Adam Zampa and Nathan Ellis coming in for Andrew Tye and Josh Hazlewood.
Soumya Sarkar, Mohammad Naim, Shakib al Hasan, Mahmudullah (capt), Nurul Hasan (wk), Afif Hossain, Mosaddek Hossain, Mahedi Hasan, Saifuddin, Mustafizur Rahman, Nasum Ahmed
Matthew Wade (capt & wk), Ben McDermott, Mitchell Marsh, Moises Henriques, Alex Carey, Ashton Turner, Dan Christian, Ashton Agar, Nathan Ellis, Mitchell Swepson, Adam Zampa