You can pay in one lump sum.
The unit handles social security for employees and has five insurances.
Pension insurance units pay 20% and individuals pay 8%;
Medical insurance units pay 8%, individuals pay 2%(+ social funds pay large medical expenses according to the 7 yuan standard per person per month);
The unemployment insurance unit pays 2%, and the individual pays 1% (rural hukou does not pay);
Maternity insurance units pay 0.7%;
Work-related injury insurance units pay 0.5%- 1% \ 2% (according to different industries).
Therefore, the unit should pay about 30% of the payment base, and the individual should pay about 10% of the payment base.