入り用
い
り
よ
う
Meanings
1
noun, na-adjective, noun which may take the genitive case particle 'no'
Refers to something being required or necessary. Often used in contexts like budgeting or planning.
I listed the necessities for the trip.
This month we have a lot of expenses, so it's tough.
2
Specifically refers to monetary costs or outlays. Overlaps with sense 1 but emphasizes financial expenditure.
The moving expenses cost more than expected.