The proposed move would lead to dismantling of the administered price mechanism.
Industry chambers also sought conducive policies for completion of large infrastructure projects in time.
According to sources, Ahluwalia and Rangarajan separately briefed Singh about the economic situation.
'Fiscal and monetary space is more constrained in developing countries because of inflation and high borrowing cost.'
With inflation still ruling above the 9 per cent mark, Prime Minister's Economic Advisory Committee (PMEAC) on Wednesday suggested that the Reserve Bank should continue to focus on controlling the rising prices.
Inflation measured by the Wholesale Price Index had declined to 6.62 per cent in January. It was 7.18 per cent in December and 7.24 per cent in November.
The government should act quickly to raise diesel rates to bring them in line with global prices in order to reduce its subsidy bill, Prime Minister's Economic Advisory Council Chairman C Ranagarajan has said.
The rupee has recovered to trade at 63 level after hitting its life-time low of 68.85 towards August-end.
Retail inflation in February has come down to a 25-month low of 8.1 per cent.
Rangarajan also called for improvement in the country's corporate-bond market saying that this will help even small companies to raise adequate funds.
Wholesale Price Index for the month ended March moderated to 3-year low of 5.96 per cent against Reserve Bank's projection of 6.8 per cent.
Economic growth rate had slipped to decade's low of 5 per cent in 2012-13 mainly on account of the impact of the global financial woes.
The accounting system of the central and state governments may change considerably, with a high-level committee suggesting sweeping changes in how expenditure is classified in Budget documents.
The IIP growth has been revised downwards to 1.14 per cent for January, from the provisional estimates of 6.8 per cent, according to the official data released on Wednesday.
He was speaking to reporters on the sidelines of a conference organised by the Madras School of Economics.
Prime Minister's Economic Advisory Council Chairman, C Rangarajan, on Wednesday echoed leading personalities saying the deteriorating quality of governance may come in the way of India achieving high growth on a durable basis.
In an interview with Business Standard, he says investments would pick up and inflation would fall in the next financial year, providing the Reserve Bank of India the room to cut rates.
Although the government had pegged fiscal deficit for the current financial year at 5.1 per cent of the GDP in the budget, it has revised the target to 5.3 per cent in view of subdued revenue collection and rising fuel and food subsidy bills.
Prime Minister's Economic Advisory Council Chairman C Rangarajan on Tuesday called RBI's policy action a "wise decision". The liquidity easing measures will have an impact on interest rates, he said.
Although the government had pegged fiscal deficit for the current financial year at 5.1 per cent of the GDP in the budget, it has revised the target to 5.3 per cent in view of subdued revenue collection and rising fuel and food subsidy bills.
PM's economic advisory council chairman C Rangarajan has asked microfinance institutions (MFIs) to overhaul their "flawed" business model for sustainability.
The overall inflation in March fell to 5.96 per cent.
Gold prices had touched the all-time high of Rs 32,975 per ten gms on November 27, 2012.
The Prime Minister's economic panel said high food inflation reflects lacklustre performance of the farm sector, which together with infrastructure, remains the main bottlenecks to higher growth.
Prime Minister Manmohan Singh last month had said inflation would moderate to 5-6 per cent by the end of the calender year.
Prime Minister's Economic Advisory Council Chairman C Rangarajan on Thursday pitched for a "substantial" increase in prices of diesel and cooking gas, saying failure to take strong steps would derail the fiscal consolidation process.
Amid the crisis in Libya, increase in fuel prices would become 'inevitable' if crude oil remains at $100 per barrel, Prime Minister's Economic Advisory Council chairman C Rangarajan said on Monday.
With high prices remaining a concern, Prime Minister's Economic Advisory Council chairman C Rangarajan on Wednesday said all policy measures, like rate hikes and intervention in grain markets, will be undertaken to bring down inflation to comfort zone of 4-5 per cent.
Food inflation rose to 17.47 per cent in the third week of November against 15.58 per cent in the previous week.
Food inflation is an area of concern for the common man and government with rate of price rise touching as high as 18.32 per cent in the last week of December mainly fueled by mass consumption items like vegetables, milk and protein-based items.
The central bank is slated to review its credit policy on January 25.
Industrial growth has entered the negative zone in October, two years after the global financial crisis. But Prime Minister's Economic Advisory Council chairman C Rangarajan pins hopes of a revival in the fourth quarter.
Fiscal correction is needed even after the changes that have been made now, otherwise the fiscal deficit would tend to be high.
The country's growth rate is expected to pick up in the second half of this fiscal and reach 6.7 per cent for entire 2012-13, Prime Minister's Economic Advisory Council Chairman C Rangarajan said on Monday.
Slow growth of the US and Europe will have some adverse affect on Indian exports.
The Prime Minister's EAC is expected to give its outlook on economy for the current fiscal in a week's time.
The government on June 25 deregulated petrol price and said the same for diesel will be done soon. But with inflation rate continuing to remain at unmanageable levels, the government put-off the decision as any further hike in diesel price would lead to cascading effect.
Slower growth in the developed world is expected to impact emerging economies like India by reducing demand for their exports in rich country markets.
The Food Security Act as proposed by the UPA government assures rice/wheat at Rs 3 a kg to BPL families as a matter of legal right.