Chancellor Gordon Brown will deliver his Budget on 22 March, the government has announced.
Gordon Brown will update his economic forecasts
Mr Brown will update MPs on his latest forecasts for the UK economy.
And he will come under pressure from opposition parties over his borrowing figures. They claim he cannot afford his spending plans without tax rises.
The Budget comes as Mr Brown makes a series of speeches which are seen as paving the way to him taking over from Tony Blair in Downing Street.
The chancellor says he is trying to address the long-term challenges facing Britain.
In his pre-Budget report in December, Mr Brown halved his previous growth forecast to 1.75%.
He said the UK economy was having a tough year but remained stable despite high oil prices and slower house price rises.
He doubled North Sea oil profits tax, froze fuel duty and promised help for both pensioners and first-time buyers.