GST, MCA, and Income Tax are three important government agencies in India that require digital signature certificates (DSC) for secure online transactions. Here’s a brief on each one of them:

GST DSC: The Goods and Services Tax (GST) is a value-added tax levied on goods and services sold in India. The GST DSC is required for registering and filing GST returns online. It helps in authenticating the identity of the taxpayer and ensures secure online transactions.

MCA / ROC DSC: The Ministry of Corporate Affairs (MCA) is a government agency responsible for regulating and administering the corporate sector in India. MCA DSC is required for various online services related to company registration, annual filings, and other compliance-related matters.

Income Tax DSC: The Income Tax Department is a government agency responsible for administering direct taxation in India. Income Tax DSC is required for filing income tax returns online and for various other transactions related to income tax.

In summary, GST, MCA, and Income Tax are three important government agencies in India that require digital signature certificates for secure online transactions. GST DSC is required for GST registration and returns filing, MCA DSC is required for various online services related to company registration and compliance, and Income Tax DSC is required for income tax return filing and other transactions related to income tax.