IT return - One has to file an ITR in case aggregate of all his income exceeds the basic exemption limit.

Any person carrying the business is required to get his books of accounts audited if the gross receipts/turnover exceeds ₹1 crore during financial year.

A GST return is a document containing details of all income and expense which a taxpayer (every GSTIN) is required to file with the tax administrative authorities.

A TDS Return is a quarterly statement which has to be submitted to the Income Tax Department of India. Submitting TDS Return is mandatory if you are a deductor. It has details of TDS deducted and deposited by you.