The key differences between the social security base of 18,300 yuan and 5,000 yuan in Shaoxing, Zhejiang are as follows: Firstly, in terms of payment amount, with a higher base of 18,300 yuan, both the individual and the employer need to pay more social security fees. Secondly, regarding future benefits, a higher base often leads to more substantial pension benefits, and may also have an impact on other social security benefits such as medical insurance accounts.

1. Payment amount difference

• Employee's personal payment: Social security usually includes pension insurance, medical insurance, unemployment insurance, etc. Taking pension insurance as an example, if the individual payment ratio is 8%, when the base is 5,000 yuan, the monthly pension insurance payment by the individual is ​
  ×8%=
  yuan; when the base is 18,300 yuan, the monthly payment is ​
  ×8%=
  yuan. For medical insurance, assuming the individual payment ratio is 2%, with a base of 5,000 yuan, the individual pays ​
  ×2%=
  yuan per month, while with a base of 18,300 yuan, the individual pays ​
  ×2%=
  yuan per month. Unemployment insurance also shows a similar pattern of more payment with a higher base.

• Employer's payment: The employer also has corresponding payment ratios for various social security items. For example, for pension insurance, if the employer's payment ratio is 16%, when the base is 5,000 yuan, the employer pays ​
  ×16%=
  yuan per month; when the base is 18,300 yuan, the employer pays ​
  ×16%=
  yuan per month. The employer's payment for other insurances such as work - related injury insurance and maternity insurance also increases significantly with the increase of the base.

2. Difference in future benefits

• Pension benefits: The calculation of pension is related to the payment base and payment years. A higher payment base like 18,300 yuan will result in a larger personal account balance during the payment period. When calculating the pension, the part related to the personal account (​
  Monthly pension from personal account=Personal account balance÷Number ofeˋR◯¡a˚‘ months
  ) will be more. For example, assuming the number of payment years is 30 years and other conditions are the same, a person with a payment base of 18,300 yuan will have a much larger personal account balance than a person with a base of 5,000 yuan, so the pension received after retirement will be significantly higher.

• Medical insurance: Although the medical insurance reimbursement ratio is not directly related to the payment base, a higher payment base means that more money will be deposited into the personal medical insurance account. For example, in some areas, a part of the medical insurance payment will be returned to the personal account for the purchase of drugs and outpatient consultations. With a base of 18,300 yuan, more money will be returned to the personal medical insurance account compared to a base of 5,000 yuan, which is more conducive to the individual's medical expenses at ordinary times.

• Other insurances: For unemployment insurance, a higher payment base may lead to a higher unemployment benefit amount when unemployed. For work - related injury insurance, in the event of a work - related injury, the compensation amount may also be affected by the payment base to some extent, but the specific situation depends on the local work - related injury insurance compensation regulations.

In general, a higher social security base of 18,300 yuan in Shaoxing, Zhejiang requires more payment in the current period, but it will bring more generous social security benefits in the future compared to a base of 5,000 yuan. When choosing a social security base, individuals and employers need to comprehensively consider their economic conditions and long - term benefits.