seigniorage
Finance term for the profit a government earns by issuing currency, equal to the difference between the face value of money and its production cost.
See also: シニョリッジ
The government uses seigniorage as part of its revenue.
Katakana loanword for the same concept, often used in academic or international contexts.
Compound of 通貨 (currency), 発行 (issuance), and 益 (profit). The English term 'seigniorage' derives from Old French seigneuriage, referring to the right of a feudal lord to mint coins.