After beating Russia by the same scoreline on Sunday, Japan will advance to the knock-out stage ahead of their opponents on Tuesday, who also beat Russia 4-1 on Monday.
Men's doubles pair of Hiroyuki Endo and Kenichi Hayakawa gave Japan the early lead when they beat Lee Sheng Mu and Tsai Chia Hsin 21-19 21-17 in a match that lasted 44 minutes.
Chinese Taipei levelled matters in the Women's singles, though, when Tai TsuYing beat Nozomu Okuhara 26-24 21-17 in 45 minutes.
Japan took the lead again after the men's singles when Kento Momota battled past Chou Tien Chen, eventually overcoming his opponent 21-14, 8-21 21-12 after 61 minutes.
In the women's doubles match, the Japanese pair of Misaki Matsutomo and Ayaka Takahashi trumped Hsieh Pei Chen and Wu Ti Jung 21-9 21-15 to put the result beyond question.
The scoreline took a one-sided turn after the mixed doubles when Japan's Kenta Kazuno and Ayane Kurihara battled past Lai Chia Wen and Tseng Min Hao 19-21 21-18 21-16 in 47 minutes.