No, the combination of the three certificates is: new registration certificate = business license+national tax certificate+local tax certificate. If the network is unified, you don't need to apply for tax registration separately, but you can go directly to the competent tax authorities with your documents to start business.

The so-called "three certificates in one" of extended information is to combine the industrial and commercial business license, organization code certificate and tax registration certificate that enterprises apply for in order to improve market access efficiency; "One photo and one yard" is a further step on this basis. Through "one-stop acceptance, parallel approval, information sharing and mutual recognition of results", a department issues a business license with a unified social credit code.

From 20 15 10 1, the business license, organization code certificate and tax registration certificate are integrated.

Reference three certificates in one _ Baidu Encyclopedia