Budget
Budget (adj, noun & verb) /ˈbʌdʒ.ɪt/
the estimated money, time and resources for a particular purpose during a particular period of time, funds, finances, resources, financial statement or plan
Adjective: inexpensive and economical, cost-effective, modest, cheap
We’re running out the allocated budget for the business project. I’m afraid we need to reschedule our plans.
Antonym: expensive
Noun: budgeter
Adjective: budgetary