"Unless you have Finance Minister in position, unless the political executive and the Cabinet decides the date by which they want the budget to be ready, it's very difficult for us to say anything (about the Budget day)," he said.
However, he said another vote-on-account may be required, in case the full Budget is not passed by August 1.
"What is very clear is that the interim Budget as has been approved by Parliament operates by the end of July. So, the Government has the ability to carry on expenditure and its functioning till then. If, after that from the first of August, it is not possible to pass full Budget we need vote-on-account for another short period beyond that," he added.
The Congress manifesto has promised to bring the Budget within 45 days of formation of the new government.
"Within 45 days of forming the new government, the Indian National Congress will present the regular Budget for the year 2009-10 with the basic objective of returning to the path of faster and more inclusive growth, which is so essential for fulfilling all our social and economic objectives," the manifesto said.