You should apply for GST Registration for the following reasons:
- If you have unutilized input tax credit under service tax, VAT, etc, you can register under GST to carry forward this credit and use it for payment of output GST
- You can claim Input Tax Credit of the GST paid on purchase of goods and services
- You will receive Certificate of Registration that will act as valid proof of legal status of business
- If you plan to sell goods or services outside your state, GST registration is mandatory
- If you plan to sell goods or services on an e-commerce platform, GST registration is mandatory
Read more: GST Registration: Online Process, Documents, Fees, Eligibility