1. Letter of credit deposit refers to the money deposited in the bank letter of credit deposit account by an enterprise that adopts the letter of credit settlement method to obtain a letter of credit. A deposit made by an enterprise in a bank to obtain a letter of credit.

2. In the futures market, traders can pay a small amount of funds according to a certain proportion of the futures contract price as financial guarantee for the performance of futures contracts and participate in the trading of futures contracts. This kind of money is the futures margin.

Simply put, the lower the margin ratio, the less money you have to pay for this transaction. For example, if you make a transaction of 1 10,000 yuan, you can make this transaction with a deposit of 10%. However, the profit of 10% is10 million yuan.

3. These two payments are accounted for in "other monetary funds" and belong to "monetary funds".