Online payment refers to the transfer of funds through the Internet. By using some digital financial tools supported by banks, financial exchange occurs between buyers and sellers, and online monetary payment, cash flow, fund settlement, inquiry and statistics are realized among buyers, financial institutions and merchants, thus providing financial support for e-commerce services and other services.

Second, the settlement:

1, China's settlement system stipulates that the following three principles must be followed for settlement: ① Pay equal attention to money and goods. That is, the seller must deliver the goods on time, and the buyer must pay according to the regulations, and must not default on the payment and refuse to pay the payment unreasonably. (2) safeguard the legitimate rights and interests of both parties. Both parties shall strictly fulfill the relevant provisions of the contract and implement the provisions of the settlement system. When organizing the settlement work, banks should proceed from the overall interests and must not take sides. (3) the bank does not advance. Banks provide settlement services for enterprises, and are only responsible for transferring money from the payer's account to the payee's account, and cannot prepay money. When an enterprise entrusts a bank to pay, it must have sufficient funds in the bank account; When you entrust a bank to collect money, you must wait until the money arrives.

2. There are two settlement methods:

① Cash settlement, that is, direct cash payment. ② Transfer settlement, that is, transfer the money from the payer's account to the payee's account through the bank. In the total amount of monetary receipts and payments handled by banks, transfer settlement accounts for more than 95%, which is the main form of monetary settlement. In cash settlement, buyers and sellers are present at the same time, and delivery and payment are made at the same time and place. The two sides pay the money and deliver the goods, and the transaction can be settled face to face, and the procedures are relatively simple. On the other hand, transfer settlement is different. The delivery time and payment time are inconsistent, and the bank often pays after delivery. Buyers and sellers are not present at the same time, there are various transactions, and the requirements for settlement conditions are different. Therefore, various settlement methods should be formulated for transfer settlement, and different provisions should be made on the time, place and conditions of payment and the responsibilities of both parties. Transfer settlement methods include: collection and acceptance, entrusted collection, remittance, letter of credit, limit settlement, transfer cheque, payment authorization, etc.

3. In accounting work, closing accounts during the year and preparing accounting statements are also called settlement, such as month-end settlement and quarter-end settlement, but year-end settlement is called final accounts.

4. Settlement, also known as monetary settlement, is a monetary receipt and payment behavior caused by economic activities such as commodity trading, labor supply and fund allocation between economic units under the condition of commodity economy. Settlement is divided into cash settlement, bill transfer and transfer settlement according to different payment methods. Cash settlement is the direct receipt and payment of cash by both parties; The transfer of bills shows the relationship between creditor's rights and debts through the payment of bills; Transfer settlement is the monetary receipt and payment behavior of transferring money from the payer's account to the payee's account through the bank.

Three. Liquidation:

1. liquidation is a procedure, including calculation and verification, to end the existing legal relationship, dispose of its remaining property and make it disappear. Liquidation is a legal procedure. When an association is cancelled, it must be liquidated. An act that terminates itself without liquidation has no legal effect and is not protected by law.

2. There are generally three explanations for liquidation: one refers to the calculation of accounts receivable and accounts payable in the monetary fund relationship caused by certain economic behaviors; Second, it refers to the sum of the actions of the company to end its business activities, calculate the debts that should be recovered and dispose of the property; The third is the offset of the balance payable in interbank transactions.

3. Closing positions generally includes two ways, one is to calculate the total amount of each transaction or transaction by transaction respectively, and the other is to make a net settlement of all transactions of each bond in a certain period of time and calculate the net closing position of long or short positions.