Where can I find a social security calculator in Beijing? Is the calculation accurate?

Social insurance premiums basically change every year, the payment base is different, and the money to be paid is different. If the base is high, you have to pay more money, so if you want to calculate accurately, you still need to use a more professional social security calculator. If the social security calculator of Easy Social Security Platform fills in the base correctly, there will be no obvious difference in the calculated results. Of all the ones I've only used, I think it's better to use.