Public expense or public funds — money spent by the state or local government, usually derived from taxes or public resources.
研究費の一部は公費で賄われている。
Part of the research costs are covered by public funds.
議員の出張は公費で行われる場合と私費で行われる場合がある。
A lawmaker's trip may be paid for with public funds or with private funds.
公費負担で教育支援が行われた。
Educational support was provided at public expense.