Enforcement Rules of the National Health Insurance Act Article 55

The total amount of salary prescribed in Article 34 of the Act refers to the total amount of income from salaries and wages defined under Category 3 of Paragraph 1 of Article 14 of the Income Tax Act.
中文原文 全民健康保險法施行細則第55條
本法第三十四條所稱薪資所得總額,指符合所得稅法第十四條第一項第三類所定薪資所得規定之所得合計額。

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