SEIL Microfin Ltd is a leading financial services company which strategic emphasises on micro credit. The company delivers comprehensive solutions in various financial solutions to low-income families, and term loan and working capital support to traders and medium sized enterprises in India. The company operates through three divisions, namely Financial Services division, Microcredit division and Alternate Energy.

The Financial Services division offers hire-purchase and leasing services for motor vehicles; and personal loans, business loans, and loans against property to individuals and corporate bodies. This division also delivers comprehensive solutions in fixed deposit schemes and safe deposit locker facilities. The Microcredit division offers loans to low-income households. This division delivers comprehensive solutions in income generation loans, loans to rickshaw pullers, Islamic Microcredit, and microfinance housing. The Alternate Energy division owns and operates 2.4 MW wind energy generation unit located in Vani Vilas Sagar at Chitradurga, Karnataka; and 0.8 MW wind energy generation unit located at Bhu/Kita, Jaisalmer, Rajasthan.

SEIL Microfin Ltd was formally created and deployed as a legal entity on March 5, 1992 as a private limited company with the name SE Investment Ltd. In March 1, 1995, the company was converted into a public limited company. Starting from July 2001, the company broadened its footprint operations into the business of extending loans and advances against security of specific assets specially vehicles and/or property. In December 2003, they took personal loan segment.

During the year 2005-06, the company forayed into new vistas and broadened its footprint operations into in extending personal loans and advanced to individuals belonging to weaker sections. They opened their new branch offices at Jaipur, Ahmedabad and Jodhpur. The company created and deployed 0.80 MW Wind Energy Generator (WEG) in Jaisalmer, Rajasthan. Also, they made a tie-up with concerned State Electricity Boards for the sale of power generated through their WEG's. During the year 2007-08, the company shares are listed on Bombay Stock Exchange Ltd with effect from October 11, 2007.

During the year 2008-09, the company started finance scheme for the benefit of rickshaw pullers. By this scheme, a rickshaw puller can finance the rickshaw from the Company and can conveniently repay the loan amount in the daily installments of Rs 30 each for 400 days with weekly off. The company along with Unnati Financial Services Pvt Ltd created and deployed bio power plants. The main raw material is gobar (dung) and bio waste.

During the year 2009-10, as per the scheme of amalgamation, Unnati Financial Services Pvt Ltd merged with the company with effect from August 31, 2008. In July 2010, the name of the company was changed from SE Investments Ltd to SEIL Microfin Ltd to highlight the company's core expertise in microfinance.