Chancellor Jeremy Hunt cuts workers' National Insurance by another 2p in the Budget, meaning it falls from 10% to 8%
He says the cut, to begin next month, is worth £450 a year for the average worker
Hunt also increases the child benefit threshold from £50,000 to £60,000
Labour leader Keir Starmer calls the Budget a "last desperate act" with people paying "more and more for less and less"
New official forecasts say the government will collect 37.1p per pound of GDP in 2028/29 - the highest level in nearly 80 years
Hunt also increases the VAT threshold for small businesses to £90,000, and announces higher taxes on vapes and business class flights
And he says he's "abolishing" the "non-dom" tax system, but new arrivals to the UK will still not pay taxes on foreign income for four years
Speaking to the BBC’s political editor Chris Mason, Hunt confirms he is “making progress” towards abolishing NI altogether, but fails say whether income tax would be cut before the election
Sunak acknowledges that the outcomes of rape offences dealt with by the criminal justice system need to be improved.
He says they have already increased average sentences for rape by a third. He says charges and police referrals have also doubled.
Sunak claims that rape convictions dropped under Starmer's tenure.
Starmer presses the prime minister, saying the recommendations he refers to should be looked into further.
Starmer says Sarah Everard's murder should have been a watershed moment. But the Labour leader goes on to quote that victims of rape who have the courage to come forward have just a 2.4% chance of their perpetrators being caught.
He asks the PM how he expects women to have faith in the justice system, when many rapists do not see the inside of a courtroom.
Sunak says the expectation is for police to take indecent exposure and other sexual crimes seriously.
He says there are existing powers within the police to suspend officers when allegations are made and "we fully expect them to use those powers".
More from Starmer who says there is a "world of difference" between a code and standards.
He notes Couzens had a history of sexual offences which stretched back years.
Starmer again talks about Lady Angiolini's recommendations as he asks: "Can the PM give categoric assurance it will be implemented immediately?"
Sunak tells the House that the College of Policing has updated its code on vetting.
He says there have also been retrospective checks for all serving officers and staff.
Labour leader Sir Keir Starmer pushes Sunak further on police vetting, saying that serious failures in police vetting date back many years.
He says Labour has been arguing for mandatory vetting standards. He asks Sunak why mandatory vetting standards are not in place in the police.
Sunak responds that Sarah Everard's murder was a shocking case and an appalling abuse of power.
He says the government "took action quickly" to strengthen police vetting and conducted screenings of staff.
Starmer: How can 'nothing stop another Couzens'?
Labour leader Sir Keir Starmer takes to the despatch box and starts by reflecting on the anniversary of the murder of Sarah Everard.
He pays tribute to Everard's family and notes the recent Lady Angiolini report which exposed failures in police vetting.
Starmer quotes one aspect of the report which said there could be another Wayne Couzens.
"How can that be the case three years on from that horrendous crime?" he asks.
The prime minister is on his feet - and he'll face questions from Labour leader Keir Starmer.
As a reminder - straight after Sunak, Chancellor Jeremy Hunt will announce the Budget. He's expected to start at 12:30 GMT.
Daniel Wainwright
Data journalist
Image source, .Today should be the last budget before the general election and Conservative MPs will want to hear announcements that will change the party’s position in the opinion polls.
On average, Labour has about a 20 percentage point lead over the Conservatives. That’s based on polls in the two weeks up to 4 March by nine different polling companies.
You can read more from our senior political analyst Peter Barnes and explore how different parties’ positions have changed since 2020 in our interactive general election poll tracker.
Munaza Rafiq
BBC disability producer
Samantha cannot work as she provides round-the-clock care for her son, Lewis
Lewis Tolmie has a rare form of Batten Disease and needs several life-saving machines to be plugged in at all times.
His mum, Samantha, says energy bills used to cost her £300 a month two years ago – and now it’s £500 a month.
Lewis is now 20, so the child tax credits Samantha was receiving for him are being replaced by universal credit - which she says will be “considerably less”.
“This is truly frightening for me as we already struggling,” she says.
“There is nowhere else we can get money from.”
The government says it is increasing disability benefits by 6.7% in April in a support package worth £104bn.
Samantha, from Doncaster, has written to the chancellor to ask for extra financial support for families like hers.
Nearly 3,000 families and more than 100 disability charities have signed her letter, which asks the chancellor to “help us to help ourselves”.
Image source, UK PoolRishi Sunak has now left No 10 to make his way to the House of Commons for this week's Prime Minister's Questions.
It seems likely that this week's session will focus on the imminent Spring Budget but we'll have to wait and see what Labour leader Sir Keir Starmer has in store for his political opponent.
Stay tuned for live updates.
Anthony Reuben
BBC Verify
Image source, ReutersBefore we hear Jeremy Hunt’s Budget it’s worth looking back at his first one from March 2023.
He introduced it as a "Budget for growth", but there has been no growth since then and the economy went into recession at the end of the year.
Part of the reason was the measures (mostly taken by the Bank of England) to cut inflation, which was indeed halved as promised.
Free childcare was one of the biggest measures, with eligible children between nine months and two years being entitled to 30 hours a week during term time by September 2025.
The first stage comes into effect next month. There have been warnings of staff shortages and some technical glitches with the applications, but the chancellor says the policy is still on track.
The chancellor also said cutting tax on draught beer in pubs would "protect the price of a pint" but prices went up by 7.5% (that's lower than in shops though).
Hunt promised to stop people who use prepayment meters having to pay more than those who buy their energy by direct debit, which he has achieved.
David Wallace Lockhart
BBC Scotland political correspondent
Image source, PAThe north east of Scotland is where the UK’s oil and gas industry is concentrated.
It’s also an area that’s proven to be fertile political ground for the Scottish Conservatives in recent years. Perhaps, in no small part, due to their vocal support for that industry.
But there are reports that Jeremy Hunt is considering extending the energy profits levy the sector currently faces. Something Douglas Ross, the leader of the Scottish Conservatives, openly opposes.
An extension would be awkward for the party in Scotland at the best of times.
But the timing couldn’t get much worse. The Scottish Conservatives have a debate in Holyrood this afternoon where they’ll argue that an extended windfall tax would be part of a “reckless assault” on the industry.
If (and it remains an if) the Chancellor extends the levy this afternoon, they’ll face some ridicule in the Scottish Parliament when they rise to denounce it.
For what it’s worth, senior SNP figures think this could all be confected – it won’t go ahead and the Scottish Conservatives can point to the influence they have on the UK Government.
But if it does happen, it’s a very awkward afternoon for Conservatives in Scotland.
Among the many rumours circulating about what the chancellor might do in the Budget to find more tax revenues is that he might extend the Energy Profits Levy on oil and gas companies.
Colloquially known as the "windfall tax", it was introduced in May 2022 after oil and gas firms made huge profits when energy prices spiked in the wake of Russia's invasion of Ukraine.
The 35% levy on energy firms was set to last until March 2028 but there is now speculation that it could be extended for a further 12 months.
As the day unfolds and we get closer to the Budget announcement, let's remind ourselves of the basics:
Chancellor Jeremy Hunt presents red budget box outside 11 Downing Street
Jeremy Hunt has just been photographed leaving 11 Downing Street, his official residence, brandishing the famous red box.
Fresh out of a Cabinet meeting, Hunt will now make his way to the House of Commons where he'll deliver the Budget at about 12:30 GMT.
Anthony Reuben
BBC Verify
Image source, Getty ImagesChild benefit is paid to most households with children - it is currently worth £24 a week for one child and £15.90 for each additional child.
In 2013, parents earning £50,000 a year started losing some of their child benefit.
That £50,000 figure has not changed in the years since, which means that the policy is affecting many more people than it did when it was introduced.
If it had increased in line with rising prices, the point at which people would start losing child benefit would be almost £68,000.
As we've been reporting, child benefit is based on the income of one partner. So if two parents earn £50,000 each they still get full child benefit, but if one earns £60,000 and the other isn't working (or they are a single parent) they don't get any child benefit.
Shanaz Musafer
BBC business reporter
As we just reported, Jeremy Hunt may consider changes to child benefit today.
David Stuart, 36, from Whitburn in Scotland, is a data analyst who lives with his wife and two children, aged 10 and six.
He makes about £70,000 a year and his wife, who works as a childminder, earns around £10,000.
His salary means they aren’t entitled to any child benefit. But two parents earning £50,000 each would still be able to claim the benefit in full.
"I would like to see it based on household income, not an individual's income. It's not about being a high earner or not. It's about being fair,” he says.
"The threshold hasn't moved in 10 years. 'High income' in 2013 was very different to 'high income' today," he says.
"Personally, I'm a high earner - but as a household, I wouldn't say we're high earners."
There have been reports Jeremy Hunt may get rid of tax perks for people who rent out their second homes as holiday lets.
The hope is that while it would generate tax revenue, it would also make homes available for people to rent on a long-term basis.
There are also reports of a possible cut in inheritance tax, which would benefit better off families.
Those with young children will also be looking at what the government might announce to help people with childcare costs.
The government has already announced an expansion of free childcare places in England, beginning next month.
Currently, claimants who earn more than £50,000 lose some of their child benefit, but a family where two parents collectively earn more than £50,000 receives the full amount.
The chancellor may decide to raise the threshold at which this applies.