The present Research study on Credit rating on Investment Banking in India is one of the measurement of credit rating system and agencies. A credit rating is an opinion of a particular credit agency regarding the ability and willingness an entity (government, business, or individual) to fulfill its financial obligations in completeness and within the established due dates. A credit rating also signifies the likelihood a debtor will default. It is also representative of the credit risk carried by a debt instrument – whether a loan or a bond issuance. A credit rating is, however, not an assurance or guarantee of a kind of financial performance by a certain instrument of debt or a specific debtor. The research study concluded that in India, the Securities and Exchange Board of India (SEBI) is the primary authority that approves or regulates Credit Rating companies in India and their various functionalities. A good credit rating indicates consumers higher creditworthiness and lower risk of default for the lender/ investor and can thus help the borrowing entity access loans at low interest rates along with longer repayment tenure. Credit rating involves evaluating the creditworthiness of entities, usually governments and businesses, by Credit Rating Agencies (CRAs), such as CRISIL, ICRA, CARE, etc. A good credit rating indicates higher creditworthiness and a lower risk of default for the lender and thus, may help an entity avail credit more easily and at considerable rates of interest. Credit ratings that are assigned to entities also serve as a benchmark for financial market regulations.