How much is it to pay social security compensation for 7 years?

It is definitely illegal for a company not to pay social security for its employees for one year. If the company fails to pay social security for employees, employees can ask the company to give corresponding economic compensation and ask the company to bear corresponding responsibilities. There will be corresponding punishment.

Legal basis: Article 86 of People's Republic of China (PRC) Social Insurance Law. If the employer fails to pay the social insurance premium in full and on time, the social insurance premium collection agency shall order it to pay within a time limit or make up for it, and impose a 0.5% late fee on a daily basis from the date of default. Failing to pay within the time limit, the relevant administrative departments shall impose a fine of more than one time and less than three times the amount owed.