Русско-англо-русский юридический словарь

Legal tender is any official medium of payment recognized by law that can be used to extinguish a public or private debt, or meet a financial obligation. The national currency is legal tender in practically every country. A creditor is obligated to accept legal tender toward repayment of a debt. (Investopedia)

A letter of guarantee is a type of contract issued by a bank on behalf of a customer who has entered a contract to purchase goods from a supplier and promises to meet any financial obligations to the supplier in the event of default. (Investopedia)

public debt in British. 1. the total financial obligations incurred by all governmental bodies of a nation (Collins English Dictionary)

financial obligation. An obligation to pay money to another party. The obligation may arise from borrowing funds or from a legal action. also called liability. (BusinessDictionary)