A commercial bank (or business bank) is a type of financial institution and intermediary.
It is a
             bank that provides transactional, savings, and money market accounts and that accepts time
             deposits.
            An institution which accepts deposits, makes business loans, and offers related services. Commercial banks also allow for
             a variety of deposit accounts, such as checking, savings, and time deposit.
            commercial banks offer services to individuals, they are primarily concerned with receiving deposits and lending to
             businesses.
            2) Commercial Banks
                   Commercial banks are of three types
              (i) Public Sector Banks
               (ii) Private Sectors Banks
              (iii) Foreign Banks
     
The role of commercial banks
Commercial banks engage in the following activities:
            processing of payments by way of telegraphic transfer, EFTPOS, internet banking, or
             other means
            issuing bank drafts and bank cheques
            accepting money on term deposit
            lending money by overdraft, installment loan, or other means
            providing documentary and standby letter of credit, guarantees, performance bonds,
             securities underwriting commitments and other forms of off balance sheet exposures
            safekeeping of documents and other items in safe deposit boxes
            sale, distribution or brokerage, with or without advice, of insurance, unit trusts and
             similar financial products as a “financial supermarket”
            cash management and treasury services
            merchant banking and private equity financing
            traditionally, large commercial banks also underwrite bonds, and make markets in
             currency, interest rates, and credit-related securities, but today large commercial banks
             usually have an investment bank arm that is involved in the mentioned activities.
     
Commercial Banks in India are broadly categorized into Scheduled Commercial Banks and Unscheduled Commercial Banks.
Activities                                          of                                         Commercial                                        Banks
The modern Commercial Banks in India cater to the financial needs of different sectors. The main functions of the commercial banks comprise:
            transfer of funds
            acceptance of deposits
            offering those deposits as loans for the establishment of industries
            purchase of houses, equipments, capital investment purposes etc.
            The banks are allowed to act as trustees. On account of the knowledge of the financial market of India the financial companies are attracted
             towards them to act as trustees to take the responsibility of the security for the financial instrument like a debenture.
   The Indian Government presently hires the commercial banks for various purposes like tax collection and refunds, payment of pensions etc.
   Commercial banks offer a wide range of corporate financial services that
    address the specific needs of private enterprise. They provide deposit, loan
    and trading facilities but will not service investment activities in financial
    markets.
   Commercial banks can be described as a type of financial intermediary. In the US,
    the term is used to refer to any banking organization or division that deals with the
    deposits and loans of business organizations.
   The term commercial bank is used to differentiate these banks from investment
    banks, which are primarily engaged in the financial markets. Commercial banks are
    also differentiated from retail banks that cater to individual clients only. In non
    English-speaking countries the term commercial bank is used interchangeably with
    the term trading bank.
   Commercial banks play a number of roles in the financial stability and cash flow of a
    countries private sector. They process payments through a variety of means
    including telegraphic transfer, internet banking and electronic funds transfers.
    Commercial banks issue bank checks and drafts, as well as accept money on term
    deposits.
   Commercial banks also act as moneylenders, by way of installment loans and
    overdrafts. Loan options include secured loans, unsecured loans, and mortgage
    loans. A secured loan is one where the borrower provides a certain property or
    asset as collateral against the loan. The main condition of these loans is that if the
    loan remains unpaid, the bank has the right to use the property in any way they like
    to realize the outstanding amount. Unsecured loans have no collateral and therefore
    command higher interest rates. There are a variety of unsecured loans available
    today and these include credit cars, credit facilities such as a lines of credit,
    corporate bonds, and bank overdrafts.
         Mortgage loans that are provided by commercial banks are similar to secured loans
          but are used specifically to buy real estate property for commercial purposes. In
          most of these cases, the banks hold a lien on the title to the particular property
          purchased with the loan. If the borrower is unable to pay the loan back, the bank
          leverages this item against the loan to generate funds or recover the principal.
         Commercial banks provide a number of import financial and trading documents
          such as letters of credit, performance bonds, standby letters of credit, security
          underwriting commitments and various other types of balance sheet guarantees.
          They also take responsibility for safeguarding such documents and other valuables
          by providing safe deposit boxes.
         Currency exchange functions and the provision of unit trusts and commercial
          insurance are typically provided by the relevant departments in larger commercial
          banks.
List of Commercial Banks in India
SBI & Associates:
         State Bank of India
         State Bank of Bikaner & Jaipur
         State Bank of Hyderabad
         State Bank of Indore
         State Bank of Mysore
         State Bank of Patiala
         State Bank of Travancore
Nationalised Banks:
         Allahabad Bank
         Andhra Bank
         Bank of Baroda
         Bank of India
         Bank of Maharashtra
         Canara Bank
         Central Bank of India
         Corporation Bank
        Dena Bank
        IDBI Bank Ltd.
        Indian Bank
        Indian Overseas Bank
        Oriental Bank of Commerce
        Punjab & Sind Bank
        Punjab National Bank
        Syndicate Bank
        UCO Bank
        Union Bank of India
        United Bank of India
        Vijaya Bank
Foreign Banks:
        ABN Amro Bank
        Abu Dhabi Commercial Bank
        American Express Banking Corporation
        Antwerp Diamond Bank
        AB Bank
        Bank International Indonesia
        Bank of America
        Bank of Bahrain & Kuwait
        Bank of Ceylon
        Bank of Nova Scotia
        Bank of Tokyo Mitsubishi UFJ
        Barclays Bank
        BNP Paribas
        Calyon Bank
        Chinatrust Commercial Bank
        Citibank
        DBS Bank
        Deutsche Bank
        Hongkong & Shanghai Banking Corporation
        JP Morgan Chase Bank
        JSC VTB Bank
        Krung Thai Bank
        Mashreq Bank
        Mizuho Corporate Bank
        Oman International Bank
        Shinhan Bank
        Societe Generale
        Sonali Bank
        Standard Chartered Bank
        State Bank of Mauritius
        UBS AG
Other Scheduled Commercial Banks:
        Axis Bank
        Bank of Rajasthan
        Catholic Syrian Bank
        City Union Bank
        Development Credit Bank
        Dhanalakshmi Bank
        Federal Bank
        HDFC Bank
        ICICI Bank
        IndusInd Bank
        ING Vysya Bank
        Jammu & Kashmir Bank
   Karnataka Bank
   Karur Vysya Bank
   Kotak Mahindra Bank
   Lakshmi Vilas Bank
   Nainital Bank
   Ratnakar Bank
   SBI Commercial & International Bank
   South Indian Bank
   Tamilnad Mercantile Bank
   Yes Bank