Shanghai social security settlement period is 26th of each month.

26th to the end of every month. According to official website of Shanghai Social Security Bureau, the settlement period of Shanghai social security is from 26th to the end of each month, and the paying bank will automatically deduct the payable social insurance premium from the payment card of flexible employees. Shanghai, referred to as "Shanghai" or "Shen" for short, is the largest economic center and an important international financial center city in China, and the first batch of coastal open cities.