Udyam registration is made with the Ministry of Micro, Small, and Medium Enterprises to obtain Government benefits and funding benefits provided to MSMEs.
It is made with the Income Tax Department for Tax Deduction at Source (TDS) where the proprietor has employees and pays salary. Also, TDS to be deducted wherever the sole proprietor receives services from third parties.
It is a must if the yearly profit exceeds the prescribed limit. For service-oriented firms, the prescribed turnover limit is Rs.20 lakh and for firms which sells commodities, the prescribed turnover limit is Rs.40 lakh. It is suggested to register for GST as it helps while seeking funding from banks as it is a valid indicator of sales made. Moreover, prominent companies prefer buying from GST complaint entities so as to get GST input benefits. GST Registration is a valid ID proof for financial transactions.
IEC is mandatory if you plan to import/export goods/services. Registration to be done with DGFT.
Opening a sole proprietorship current account helps in the flexibility of money transactions. You can open a current account from the bank along with GST registration of the same.