Hangzhou has paid social security for ten years. Does the decade start from the month of payment or take the year as the cycle?

From the first month of payment. Official website of Hangzhou Social Security Bureau shows that the social security fund in Hangzhou is paid to the Social Security Bureau on a monthly basis, so the payment period of social security payment is also calculated on a monthly basis, starting from the first month of social security payment. Hangzhou social security is one month after payment, one year after payment 12 months. 10 month payment is less than 12 months, which can only be counted as continuous payment of social security 10 month, but not as payment for one year.