noun
deposit money; security deposit
A sum of money deposited with a public authority or court as a guarantee, often required in legal procedures or elections.
選挙に立候補するには供託金を納めなければならない。
To run in an election, you must pay a deposit.
裁判所に供託金
By depositing security money with the court, you can halt compulsory execution.
敷金 is a rental deposit paid to a landlord, whereas 供託金 is deposited with a court or government office for legal or electoral purposes.
Compound of 供託 (deposit, entrust) and 金 (money). 供託 is a legal term for depositing money or property with a public authority.