Revenue expenditure is the costs of running local authority services such as staffing, heating, lighting and cleaning, together with the expenditure on goods and services consumed within the year.
Costau rhedeg gwasanaethau awdurdodau lleol yw gwariant refeniw megis staffio, gwres, golau a glanhau, ynghyd â'r gwariant ar nwyddau a gwasanaethau a ddefnyddir o fewn y flwyddyn.