noun
cash on hand; ready money; spending money
Refers to money that is immediately available for use, such as cash kept at home, in a wallet, or petty cash for daily expenses.
旅行の前に手元金を確認しておく。
I check the cash on hand before a trip.
手元金が足りなくて、ATMでおろした。
I didn't have enough cash on hand, so I withdrew some from the ATM.
Compound of 手元 (てもと, 'at hand') + 金 (きん, 'money').