After completing his MBA, Kotak started Kotak Capital Management Finance Ltd (which later became Kotak Mahindra Finance Ltd). From a seed capital of less than US$80,000 borrowed from family and friends, he converted a bill-discounting start-up into a financial services conglomerate with assets of US$68 billion (as of March 2022), and the third largest private sector bank by market capitalization in India with over 1752 branches. During 2014, Kotak almost doubled his wealth as shares of his
Kotak Mahindra Bank hit an all-time high after he sealed a $2.4 billion deal in November 2014 for rival ING Vysya Bank, partly owned by Dutch financial services group
ING. In 2015, Kotak entered the general insurance business and is partnering with telecom magnate Sunil Mittal's
Bharti Airtel to start a small payments bank. He took over as President of the
Confederation of Indian Industry (CII) for the year 2020-21. In August 2023, it was announced that Kotak's alternate fund management and investment advisory businesses would be combined into one entity called Kotak Alternate Asset Managers (KAAM). It was reported that the entity would have $18 billion in assets under management, making it the largest asset management entity in India. == Honours and awards ==