noun
annual expenditure
General term for yearly spending; less common than the Diet-member sense.
会社の歳費を削減する必要がある。
We need to cut the company's annual expenditure.
noun
annual salary for Diet members
Specifically the yearly allowance paid to members of the Japanese Diet; a fixed political term.
国会議員の歳費は法律で定められている。
The annual salary for Diet members is stipulated by law.