How many months will Nanjing social security base be adjusted?

1 month. The social security base in Nanjing was adjusted to 4494-24042 yuan, starting from 65438+ 10 in 2023, and the base declaration was completed by 65438+ 10/February 6, and the new base was started in February. The difference is directly adjusted according to the new base of 65438+ 10, and there is no late fee for the difference. February settlement to March 6 to complete the base declaration.