The Micro Finance (Development and Regulation) Bill proposes to cover all types of microfinance institutions.
The Bill's 2007 version covered only MFIs not regulated by the Reserve Bank of India.
As a result, banks and a few categories of non-banking finance companies were outside its purview.
The Bill is likely to be tabled in the monsoon session of Parliament.
The players in the sector comprise Self-Help Group-Bank linkages, which account for about 58 per cent loans, followed by NBFCs (34 per cent) and others such as trusts and societies (8 per cent of the total portfolio).
Banks and NBFCs are regulated by RBI.
There is, however, no separate category for NBFCs operating in the microfinance sector.
An RBI committee under Y H Malegam that was set up to suggest microfinance reforms had said the Bill should apply to only MFIs not covered by RBI.
"All stakeholders, including the industry and banks, feel there should be a Bill to regulate all MFIs. The new Bill will cover all kinds of MFIs, including NBFCs, non-NBFCs, trusts and societies," a finance ministry official told Business Standard.
The MFIs could be regulated by the National