ローンの不足分は来月支払う予定です。
I plan to pay the outstanding amount on the loan next month.
We made extra sales to make up for this month's revenue shortfall.
It was arranged that the outstanding fee would be paid later.
A shortfall arose due to a mistake in inventory management.
The company billed the client for the outstanding amount.
差額 is the difference between two amounts (e.g., price paid vs. price owed), while 不足分 specifically means the amount that is lacking.
欠損 is an accounting term for a loss or deficit in a business context, whereas 不足分 more broadly refers to any missing amount or quantity.
過剰 means an excess or surplus, the opposite of 不足分, which means a shortfall or deficit.
Compound of 不足 (insufficiency) and 分 (portion, amount).