noun
special outlay; extraordinary expenditure
Refers to a separate, non-routine expense, often in accounting or budgeting contexts.
このプロジェクトの別途支出は予算に含まれていません。
The special outlay for this project is not included in the budget.
経常支出 refers to ordinary or recurring expenses, while 別途支出 is for separate, extraordinary outlays.
Compound of 別途 (separate, special) and 支出 (expenditure).