Brown said the Labour government, which has funded plans to bring broadband Internet to nearly all homes by 2012, would open access to public data to transform the way citizens communicated with the state.
He said further investment to build a next generation, superfast broadband network over the coming decade would bring "new, cheaper, more personalized and more effective public services to people."
The government proposes to pay for this faster network by 2017 with a 6 pound a year tax on telephone lines although the Conservatives say the levy is unnecessary and would scrap it if they win the election.
Britain's budget deficit is heading toward a record 12 percent of gross domestic product this year, a figure comparable to crisis-hit Greece.
Labour promises to halve the deficit over four years but the Conservatives say that is not enough.
Part of either side's plans to get borrowing down after an 18-month recession will fall under the heading of "efficiency savings" — finding cheaper ways to do government business.
Brown said the government could save money and improve the quality of public services at the same time.
"Shifts in existing spending, including being prepared to cancel current projects ... together with more detailed plans ... in the budget on Wednesday, will help us to save billions of pounds a year in public sector costs in the next few years." He said a new government website, Mygov, would mark the end of the "one-size-fits-all, man-from-the-ministry-knows-best approach to public services."
The government has said more than 10 billion pounds can be saved over the next four years through "smarter government.”
Brown said Chancellor Alistair Darling would give more details on how this total could rise to 20 billion pounds in the budget.
Most economists treat government efficiency targets with heavy skepticism, arguing that they are often too ambitious and tend to be fallen back on to fill holes in fiscal policy plans or to make spending cuts sound more palatable.
