Enforcement Rules of Stamp Tax Act Article 10

The "same document categorized under two or more types of document" depicted in Paragraph 1, Article 13 of the Act shall mean that the content of a document has two or more attributes. For two documents printed on the same piece of paper or the front and back of a paper, both documents shall be affixed with the appropriate amount of tax stamps.Pursuant to Paragraph 1, Article 13 of the Act, if the same document is categorized under two or more types of document subjecting the same tax rate, only tax stamps applicable to one type of document are required; if the same document is subject to different tax rates, the higher rate shall govern. The preceding provision applies to the situation where the taxpayer is the same person; in case different taxpayers are involved, each taxpayer shall pay the stamp tax, and in such event, the preceding provision does not apply.
中文原文 印花稅法施行細則第10條
本法第十三條第一項所稱同一憑證而具有兩種以上性質,係指一種憑證之內容,包括兩種以上性質而言,至於兩種憑證聯印於一紙或正反面者,仍應分別貼用印花稅票。
本法第十三條第一項所定,同一憑證具有兩種以上性質,稅率相同者,僅按一種貼用印花稅票,稅率不同者,應按較高之稅率計算稅額,係指納稅義務人為同一人之情形。
如納稅義務人並非同一人時,仍應分別繳納印花稅,不適用該項規定。

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