The crossword solution for the term 'Budget Prefix' is 'ECONO, ' which is a five-letter word. ECONO is a prefix derived from the Greek word oikonomos, meaning 'household management.' It is commonly used in economics and finance to refer to the practice of managing resources in an efficient and effective manner. In terms of budgeting, it refers to the practice of allocating resources in a way that maximizes their value.