But the public service will be required to make $1 billion in savings to help offset the costs.
Prime Minister Scott Morrison argues the government tasks public servants to get jobs done and, while he respects their work, he also expects results.
"That means they will make those sensible decisions about the best way to achieve that," he told reporters in Darwin on Tuesday.
The coalition's costings - released on Tuesday - show an improvement to the federal budget bottom line of about $1 billion over four years compared to the 2022/23 budget released in March.
It will be achieved by lifting the efficiency dividend applied to government departments and agencies by 0.5 percentage points to two per cent.
Finance Minister Simon Birmingham promises essential services will not be cut to make the savings.
"The opportunities for departments ... exist in relation to management of their accommodation, technology, consultancies and contractors, their staffing arrangements," Senator Birmingham told reporters in Melbourne.
"These in no way impact the delivery of services and support to Australians. Essential services remain guaranteed under the coalition."
More than 2.59 million Australians have already cast their vote, the Australian Electoral Commission says.
New polling shows Labor's lead has narrowed to 53 per cent, but it still has an advantage over a coalition sitting on 47 per cent on a two-party preferred basis.
The Roy Morgan poll shows the ALP is set to win the election with a swing of 4.5 per cent since the 2019 poll.
Treasurer Josh Frydenberg took aim at the opposition for not yet releasing its policy costings, calling on leader Anthony Albanese to "fess up".
But Labor, which is expected to release its policy costings by Thursday, has rejected the government's criticism.
Shadow treasurer Jim Chalmers said Labor had been working closely with the independent Parliamentary Budget Office and all of its election commitments had been tallied up.
"We need to flick the switch to quality (spending)," he told reporters in southern Queensland.
"We will begin that task, whether it's trimming outsourcing, whether it's multinational tax reform, whether it's an audit of the government's rorts and waste and mismanagement."
Labor has unveiled a $1.5 billion medical manufacturing fund as its latest election commitment,
The fund will be part of a $15 billion National Reconstruction Fund to shore up medical supply chains, including vaccines.
Labor Leader Anthony Albanese plans to commission the development of a medical manufacturing industry plan, to determine how local businesses can secure government contracts, if the party wins government on May 21.
"Serious countries should make things. Serious countries should be led by builders, not bulldozers, which is how I would lead a future Labor government," he said.
As Mr Frydenberg and other moderate Liberal MPs face a serious challenge from the so-called teal independents, the prime minister has suggested more affluent inner-city voters had different priorities to those in the outer suburbs and regions where the cost of living was a more important issue.
"What is elevated in my electorate is the issue of climate change in a way that it's not necessarily elevated in some other electorates," Mr Frydenberg said.