Constitution of the Republic of China (Taiwan) Article 59

The Executive Yuan shall, three months before the beginning of each fiscal year, present to the Legislative Yuan the budgetary bill for the following fiscal year.
中文原文 中華民國憲法第59條
行政院於會計年度開始三個月前,應將下年度預算案提出於立法院。

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