支出

1. Origins, structure, and basic meaning

• Structure: 支出 (ししゅつ) is an accounting noun for money paid out by a household or business.
• Basic usage: 毎月の支出を確認する makes monthly outgoings the object checked in a ledger, while 予定外の支出が重なる makes unexpected expenses the subject accumulating.

2. Common pitfalls and similar expressions

• Regular outgoings and unexpected expenses
  • 毎月の支出 is restricted by accounting period, whereas 予定外の支出 is restricted to unplanned costs. The noun denotes neither income nor remaining savings.