noun
financial support; funding; support fund
Refers to money provided as aid, subsidy, or grant, often from an organization or government.
政府は被災地に支援金を送った。
The government sent financial support to the disaster area.
このプロジェクトは企業からの支援金で運営されている。
This project is operated with funding from companies.
寄付金 is a donation, typically from individuals or private entities, whereas 支援金 can come from various sources including governments.
Compound of 支援 (support) and 金 (money).