According to a report by rating agency Fitch, different sets of regulations imposed by different regulators may result in an uneven playing field.
The Reserve Bank of India and the Andhra Pradesh government seeking to regulate the sector in the state can be seen as an example of multiple regulators vying for control.
Such instances would only lead to harmful consequences, the report said
"The experience of cooperative banks in India suggests multiple regulators may not be as effective as a single, strong regulator. MFIs may also find it difficult to comply with different sets of guidelines.
"A common and consistent set of regulations would add stability to MFIs' operations and enhance creditor comfort", said Ananda Bhoumik, senior director (financial institutions), Fitch.
MFI loans in Andhra Pradesh were the worst hit in the country, owing to uncertainty over regulation of the industry in the state.
Collection efficiencies dropped from 99 per cent in September 2010 to below 50 per cent in December 2010.
Andhra Pradesh accounts for about 29
MFIs under pressure to raise funds
Fitch cuts India's credit outlook to negative
More microfinance IPOs in the offing
Auto sector to grow by 10-12% in 2010: Fitch
Government unhappy with Fitch's new outlook