Is corporate social security fined for forgetting to pay or not paying?

You won't be fined. It usually takes some time to pay the fee. For example, if Beijing does not handle business from 25th to 5th of next month, it will be charged. You can ask if you can start first. Even if it's not paid, it can be paid back next month. Social security payment method:

If it is insured in the name of an individual, if it is missed, it can only be paid back, and five risks can be paid.

If the unit does not declare (does not open an account), it can only pay the pension;

After paying for a period of time, you can find an agent to pay the interruption fee.

If the payer (excluding individuals and freelancers) fails to pay the employee's old-age insurance premium, he shall bring the following materials to the social security agency to handle the case payment of the basic old-age insurance premium:

Employee files and endowment insurance manual;

Application form for payment of basic old-age insurance premium;

Labor contract, salary payment schedule, etc. ;

Other relevant materials.

In order to make up for the loss of employee's personal account amount caused by the enterprise's late payment of employee's old-age insurance premium, the overdue old-age insurance premium shall be implemented in accordance with DocumentNo.. 19997. The calculation method is as follows:

Payment amount = the average social wage of the previous year at the time of payment * (the annual payment wage base should be added with% of the average social wage) ×× payment ratio× payment coefficient.

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