Karaikudi is situated in the Sivaganga district of Tamil Nadu. It is a greater municipality and the states 20th largest urban agglomeration. It is part of the Chettinad area and has been declared a heritage town by the State Government of Tamil Nadu. Karaikudi is known for its palatial houses that are built with limestone called Karai Veedu. Karaikudi has derived its name from the thorny plant called Karai. It has been referred to in the ancient literature as Kareekudi. The name gradually got modified and modernized into Karaikudi. It was established in the 19th century. The oldest known structure in the area is the Koppudaiya Nayagi Amman Temple. The town of Karaikudi is home to the Nagarathars and the Chettiars who form the business community, the financiers and the trade facilitators. Karaikudi is a rapidly developing urban center. UNESCO has proposed to set up a Chettinad Heritage Museum in the area, recognizing the unique architectural style of the region. Karaikudi is known for its palm leaf baskets woven by the women, known as Chettinad Kottan. Chettinadu Kandangi sarees of Karaikudi are widely popular in the region. The handicraft industry in Karaikudi is indeed a thriving business. Karaikudi is also known for its delectable cuisine. There are many prominent temples in the area that attract tourists. Kundrakudi Shanmuganathan Temple, Ariyakudi Thiruvengamudayan Temple, Pillayarpatti Karpagavinayagar temple, Thirumayam Permual Temple, Kannadasan Mandapam, Kamban Manimandapam, Chettinad Raja Palace and Thousand windows house are the visitor attractions in Karaikudi
Ratnakar Bank was founded in August 1943. According to Business World-PWC Best Bank Survey, it was rated as the fastest growing small bank simultaneously in the year 2013, 2014 and 2015. In the year 2013, it bought a particular business of the Royal Bank of Scotland due to which 1.5 lakh of RBS customers moved to RBL Bank. In the year 2016, it acquired a 30% stake in Swadharv Finserve Pvt Ltd.RBL bank started the first credit card for Gold enthusiasts in association with Indian Gold Union. To support the government campaigns such as Make In India and Startup India, the RBL Bank came up with the Startup Club to fulfill the end to end banking needs of the emerging entrepreneurial community. It has also started the financial literacy program referred to as "Shaksham" in association with CDC to provide education to 25000 individuals and 300 villages in the four districts of MP. The RBL bank has also been a banking partner for the Delhi Daredevils. RBL even started another financial literacy program "Swadhaar Finaccess" for women from lower-income communities in association with Swadhaar Information and Management Services in Gujarat and Mumbai.