Enforcement Rules of the Income Tax Act Article 35

The maximum interest rate standard approved by the tax office as stated in Paragraph 2, Article 30 of the Act is established by the national tax offices under the Ministry of Finance in all districts by referring to the market interest rate in each district, to be further submitted to the Ministry of Finance for approval.
中文原文 所得稅法施行細則第35條
本法第三十條第二項所稱稽徵機關核定之利率最高標準,由財政部各地區國稅局參酌該區市場利率擬訂,報請財政部核定之。

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