noun
disbursement; payout
A formal financial term for money paid out, especially by an organization or government.
政府の支出金は年々増加している。
Government disbursements are increasing year by year.
このプロジェクトの支出金は予算を超えた。
The payouts for this project exceeded the budget.
収入金 is the opposite: money received or income, often used in accounting contexts.
Compound of 支出 (ししゅつ, 'expenditure') + 金 (きん, 'money').