Value-added and Non-value-added Business Tax Act Article 8-1

The proceeds from goods sold in auctions or charity sales and from benefit performances held by a settler of a charitable trust may be exempted from the business tax, provided that the proceeds, after deducting the necessary expenses for the auctions, charity sales, and benefit performances, are entirely and solely for the use of by the charity.The proceeds from goods sold in auctions or charity sales, and from benefit performances referred to in the preceding paragraph are excluded from the sales amount of the settler.
中文原文 加值型及非加值型營業稅法第8-1條
受託人因公益信託而標售或義賣之貨物與舉辦之義演,其收入除支付標售、義賣及義演之必要費用外,全部供作該公益事業之用者,免徵營業稅。
前項標售、義賣及義演之收入,不計入受託人之銷售額。

English translation for reference only; the Chinese text prevails. Not legal advice.