The Prime Minister's party is enjoying a healthy lead in opinion polls, though the range of predicted vote shares suggests a hung Parliament remains a possibility.
"Get Brexit done and we can focus our hearts and our minds on the priorities of the British people".
Johnson spent more time ridiculing opposition Corbyn than offering details about the plans laid out in the party platform, poking fun repeatedly at Corbyn's plan to remain neutral if a second referendum is held next year, as Labour wants. "We will get Brexit done in January and unleash the potential of our whole country", said Johnson.
Johnson, who was speaking at an election event in the West Midlands on Sunday, said the Conservatives would neither raise income tax, sales tax (VAT) nor social security rates in what he branded a triple tax lock. Johnson, portrayed by the opposition party as being in the pockets of billionaires, said he was targeting his measures towards those who are less well off.
They also seem set to benefit from Nigel Farage's Brexit Party pulling out their candidates from more than 300 seats being defended by the Conservatives.
In a heated campaign where the Conservatives have been criticised for disseminating misleading social media posts, Johnson, 55, will say he will "turn the page from the dither, delay and division" of recent years.
He promised £23.5 billion worth of tax cuts and public spending between 2020 and 2024. Corbyn himself would stay neutral during the process.
Think tanks like the Institute for Fiscal Studies have raised questions about the credibility of plans to fund investment from both the Conservatives and Labour. It also makes crowd-pleasing gestures like eliminating vehicle parking charges at hospitals for staff working night shifts, disabled people, those with terminal illnesses and their families.
The manifesto does call for increased spending to recruit 20,000 more police and 50,000 nurses, and also a 2 billion pound ($2.57 billion) nationwide pothole repairing effort.
Johnson is also committed to increasing the NHS budget by £33.9 billion ($43.5 billion, 39.5 billion euros) by 2023-24, and has promised a programme of building or upgrading 60 hospitals over the next decade.
To try to win over voters, Labour announced another spending commitment, promising to compensate more than three million women who lost years of state pension payments when their retirement age was raised.
On the environment, it promises a ban on exporting plastic waste to non-OECD countries and the creation of an Office for Environmental Protection to implement carbon neutrality by 2050.
The scale of eastern European immigration since 2004 was one of the key drivers of the "leave" vote in the 2016 Brexit referendum.
"I'm looking forward to sharing our manifesto", Johnson said on Twitter on Saturday.