noun
overdraft; outstanding debt
Rare financial term referring to an overdraft or debt that exceeds the available balance or credit limit.
銀行口座に借越金が発生すると手数料がかかる。
If an overdraft occurs in your bank account, a fee will be charged.
借越金の返済計画を立てる必要がある。
It is necessary to make a repayment plan for the outstanding debt.
Compound of 借り越し (over-borrowing) + 金 (money). The exact historical derivation is uncertain, but the term is formed from standard financial kanji.