The Minister of Budget and National Planning,
Udoma, who could not confirm when the President might sign the document, noted that the executive arm of government still has a window of 30 days to make a decision.
The minister stated this in an interview at the Presidential Villa, Abuja.
"The President is currently reviewing the budget. As you know, we have a minimum window of 30 days," Udoma said.
When further asked when Buhari will sign the budget, he said "...as soon as he is through, he will sign it. That is what l can tell you for now."
The President received the budget on May 25, 2018, a week after it was passed by the National Assembly.
The Senate increased the budget from N8.612 trillion as proposed by Buhari to N9.12 trillion.
The upper chamber also increased the crude oil benchmark price pegged for the budget from 45 dollars per barrel to 50.5 dollars per barrel.