noun
fixed-amount cash handout; government cash payment
Refers to a lump-sum cash payment from the government, often a one-time benefit or stimulus payment. The term gained prominence during Japan's 2009 economic stimulus package.
政府は定額給付金を全世帯に支給した。
The government provided a fixed-amount cash handout to all households.
定額給付金の申請期限は来月までです。
The application deadline for the cash payment is until next month.
Compound of 定額 (fixed amount) + 給付金 (benefit payment). The term became widely known during Japan's 2009 economic stimulus measures.