operating_budget has definitions from the field of business
1
[ noun ] (business) a budget for current expenses as distinct from financial transactions or permanent improvements

Used in print

(The Dallas Morning News,...)

Operating_budget for the day_schools in the five counties of Dallas , Harris , Bexar , Tarrant and El_Paso would be $ 451500 , which would be a savings of $ 157460 yearly after the first year 's capital outlay of $ 88000 was absorbed , Parkhouse told the Senate .

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