During the recess, the Departmentally Related Standing Committees of Parliament examine the Demand for Grants submitted by various Ministries.  The Demand for Grants are detailed explanations of that Ministry's annual budget which form part of the total budget of the government.  These are examined in detail, and the committees can approve of the demands, or suggest changes.  The Demand for Grants are finally discussed and voted on by the Parliament after the recess.  (The post below lists the ministries whose Demand for Grants will be discussed in detail after the recess). The issue is - how effective is the institution of Parliament in examining the budget?  Though India specific information on this subject is hard to find, K. Barraclough and B. Dorotinsky have cited the World Bank - OECD Budget procedures Database to formulate a table on the legislature approving the budget presented by the executive ("The Role of the Legislature in the Budget Process: A Comparative Review", Legislative Oversight and Budgeting).  I reproduce the table below:

In Practice, does the legislature generally approve the budget as presented by the Executive? (in percent)
Answer All Countries OECD Countries Presidential democracies Parliamentary democracies
It generally approves the budget with no changes 34 33 14 41
Minor changes are made (affecting less than 3% of total spending) 63 67 71 59
Major changes are made (affecting more than 3% but less than 20% of total spending) 2 0 7 0
The budget approved is significantly different (affecting more than 20% of total spending) 0 0 0 0
Sources:  K. Barraclough and B. Dorotinsky; PRS.

Recently the government released draft rules under the Right to Information Act for consultation before it finalised them.  This process of public consultation on draft rules is a welcome step which is not often followed. Many Acts passed by Parliament 'delegate' the power to make rules and regulations to the executive (government and regulatory bodies such as RBI and TRAI).  The reason is that these rules may need to be changed at frequent intervals (such as, say specifications on food labels), and may not need the time and expense required for amendment to the Act by Parliament.  However, Parliament retains for itself the power to examine these rules.  Most Acts passed by Parliament provide that rules framed under them will be laid before the Parliament.  Any Member of Parliament may demand a discussion on the rules and a vote to modify or nullify them. In practice, a large number of rules are laid before Parliament, making it very difficult for Parliamentarians to examine them effectively.  In the last session of Parliament, more than 1500 documents were laid before Parliament.  No discussion on specific rules has taken place in Parliament in the 14th and 15th Lok Sabha (2004-10). Both the Lok Sabha and Rajya Sabha also have Committees on Subordinate Legislation to examine these rules.  Out of 1515 rules, regulations, circulars and schemes laid before Lok Sabha between 2008 and 2010, the Committee has examined 44 documents.  This amounts to only 3% of the afore-mentioned documents laid before the Lok Sabha. It is important that Parliament oversee the power to make rules that it has delegated to the government.  For that, it needs to invest in strengthening the research staff of the committee on subordinate legislation as well as provide research stafff to MPs.