In Hangzhou, Zhejiang, a social security base of 6,100 yuan does not directly correspond to a specific fixed "tier" in the traditional sense. The social security contribution base in Hangzhou is determined based on a percentage range of the average wage of employees in the previous year. The lower limit is 60% of the average wage of employees in the previous year, and the upper limit is 300% of the average wage of employees in the previous year. In 2025, the lower limit of the social security base is 4,812 yuan, and the upper limit is 24,930 yuan. Since 4,812 yuan < 6,100 yuan < 24,930 yuan, 6,100 yuan is within the legal contribution base range, but it does not fall into a pre - set "tier" like some fixed - level classification systems.

Here are the reasons in detail:

1. Flexible base determination:

• The social security contribution base in Hangzhou is designed to be flexible. Employers can generally choose a contribution base within the range of 60% - 100% of the average wage of employees in the previous year, but it must be based on the monthly average of the total wage of employees. For example, if the average wage of employees in the previous year in Hangzhou is X yuan, the lower limit of the contribution base is 0.6X yuan, and the upper limit is 3X yuan. When an employee's actual monthly wage is between the lower and upper limits, the employer usually takes the employee's actual wage as the contribution base. So, 6,100 yuan may be the actual wage of an employee, and the employer uses this as the contribution base for social security contributions.

2. Relationship with wage levels:

• If an employee's monthly wage is 6,100 yuan, and considering the range of social security contribution bases in Hangzhou, it means that the employee's wage level is neither at the low - end (below the lower limit) nor at the high - end (above the upper limit). For instance, if the lower limit is 4,812 yuan, an employee with a wage of 6,100 yuan has a relatively stable income level above the minimum contribution base. This also indicates that the social security contributions paid by the employee and the employer will be calculated based on this amount, which is higher than those with a contribution base at the lower limit.

3. No fixed - tier correspondence:

• Different from some systems that divide social security into several fixed tiers such as low - tier, middle - tier, and high - tier, Hangzhou's social security contribution base is more about a continuous range determined by the average wage of employees in the previous year. So, a contribution base of 6,100 yuan cannot be simply labeled as a certain "tier." Instead, it is a value within the overall contribution base range, and the specific social security benefits in the future will be related to factors such as the length of contribution and the amount of contributions calculated based on this base.

In conclusion, when the social security base in Hangzhou is 6,100 yuan, it is within the normal contribution base range. However, since Hangzhou does not have a fixed - tier classification for social security bases, we cannot define it as a specific tier. The social security contribution amount and future benefits are calculated based on relevant regulations and this contribution base amount.

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