Online declaration: after signing the bank withholding agreement, the payer applies to the local tax authorities for online declaration, and receives training after approval. At the time of declaration, log in to the online tax system of the local tax bureau with the account number and password provided by the local tax authorities, declare the payment by yourself and withhold the social security fee by yourself in the online tax system.

Extended reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.