More than 21 billion euros ($21.5 billion) will go towards supporting households and businesses with sky-high gas and electricity bills, a major cause of the soaring inflation which risks tipping the eurozone's third largest economy into recession next year.
"There are two big priorities, growth... and social justice, meaning a particular focus on families, those on the lowest incomes and the most fragile groups," Prime Minister Giorgia Meloni told a press conference after her cabinet approved the budget in the early hours.
Meloni's far-right Brothers of Italy party swept to power in elections in September, forming a coalition government with the anti-immigration League and Silvio Berlusconi's right-wing Forza Italia.
They had promised sweeping tax cuts and more funds for pensioners and for families, sparking concerns about the impact on Italy's already colossal debt.
But Meloni, whose party once called for Italy to abandon the euro single currency, has sought to present herself as a responsible leader at a time of global economic uncertainty.
Notably, the coalition's flagship measure -- extending a 15-percent flat tax for the self-employed -- did not go as far as initially expected.
"It's a prudent and responsible budget, in continuity" with the previous government under Mario Draghi, said Giuliano Noci, professor at Milan's Politecnico school of management.
League leader Matteo Salvini told a joint press conference it was a budget that was "not miraculous but that brings more money to millions of Italian homes".
The plan now heads to parliament, where it can be amended. It must then be adopted by both chambers by December 31.
Italy's last populist government, led by the Five Star Movement and the League in 2018-19, clashed with the European Union over its failure to keep spending under control.
Italy raised its 2023 public deficit forecast earlier this month to 4.5 percent of gross domestic product (GDP), above the 3.4 percent forecast in September by Draghi's government.
But the deficit is forecast to fall to 3.7 percent in 2024 and three percent in 2025, according to an economic roadmap adopted by Rome.
The coalition had promised to raise the annual income ceiling for the 15-percent tax rate for the self-employed from 65,000 euros ($66,700) to 100,000 euros, but the proposed budget puts it at 85,000.
Employees will benefit from tax reductions of two percent for incomes up to 35,000 euros per year, as under Draghi, and three percent for those on salaries below 20,000 euros.
Companies hiring women and young people will benefit from tax exemptions, while tax amnesties, an election promise, will be offered to people owing less than 1,000 euros incurred before 2015.
On cash payments in shops and businesses, the government raised the ceiling from 2,000 euros to 5,000 euros -- despite warnings from opposition parties that the move would favour corruption.
It also adjusted pension rules so people who have worked for 41 years can retire at 62 years old, a move affecting an estimated 48,000 people.
The retirement age in Italy, known for its ageing population, had been set to rise from 64 to 67 in 2023.
"With the global economy slowing down and interest rates rising, it is forced to remain cautious" and carry out what electoral promises it can, a bit at a time, noted Lorenzo Codogno a former chief economist at the Treasury.
Poverty relief measure
The new measures will be financed in part by reforming the so-called citizens' income, a poverty relief scheme introduced by the Five Star Movement.
The reform shortens the time those deemed fit to work can claim the benefit and the entire system will be overhauled by 2024.
The government is also set to raise new revenues from a windfall tax on energy companies.
The budget also includes the resurrection of a long-shelved plan to construct a bridge linking Sicily to mainland Italy.
Salvini said he would seek EU funds for the controversial plan for the Strait of Messina, either in launching a new tender or reopening the project ultimately shuttered in 2011.
That year, the European Commission said the project -- revived and cancelled by various previous governments -- was not strategic for the development of transport in the EU.