George Osborne's proposed cuts to disability benefits could see the government claw back £4.4 billion from people who are too ill to seek full employment - much more than charities previously thought.
The figures laid out in the Budget on Wednesday suggest savings from the controversial cuts could rise to £1.28 billion a year by 2020/21.
Putting together the numbers for cuts to Personal Independence Payments (PIP) for 640,000 disabled people, the Mirror calculated that the total saved would be £4.375 billion over the course of this Parliament.
In his Budget, Mr Osborne warned of tough cuts in order to weather the "storm" of global economic uncertainty in future.
But he found the money to increase the highest 40p tax band by £2,500, offering savings to anyone on a salary greater than £42,500.
He also found the money to freeze duty on beer and cider - a highly popular move among Conservative backbenchers.
In his rebuttal, Jeremy Corbyn criticised a Budget that showed the Chancellor had "failed" to balance the books of Britain's finances.
George Osborne 2016 budget at a glance
George Osborne 2016 budget at a glance
1/8 Debt forecasts up, growth forecasts down
The OBR’s new forecasts have downgraded growth in all of the next five years to 2020. The watchdog says the economy will only grow by 2 per cent in 2016, as opposed to the anticipated 2.4 per cent. Borrowing and productivity growth are also down – with forecast borrowing in 2018-198 £16 billion higher
2/8 New tax on sugary drinks
The Chancellor announced a new tax on sugary soft drinks, which is projected to raise £520 million. At least some of the money will be spent on doubling funding for school sport, the Chancellor says. Labour leader Jeremy Corbyn welcomed the levy
3/8 Tax cut for higher earners paying the 40p rate
The Chancellor has raised the threshold for paying the higher rate of income tax to £45,000. The higher rate is paid by roughly the richest 15 per cent, currently people earning over £42,386
4/8 Increase in tax-free income tax threshold
The tax-free allowance increase to £11,500 in April 2017 – up from £10,600 now. The Chancellor previously raised the allowance from £6,475 in coalition with the Liberal Democrats. The Conservative manifesto pledges to put the allowance up to £12,500 by the end of the Parliament
5/8 New devolution for counties and powers for London and Manchester
The West of England, the East of England and Greater Lincolnshire will all get elected mayor-led combined authorities with new powers. The Chancellor says they are backed by £1 billion new funding. Greater Manchester will get new powers of criminal justice while London will keep its business rates – giving whoever is elected Mayor a lot more spending power
6/8 Fuel duty frozen for sixth year running
The Chancellor had planned to end the fuel duty freeze he had put in place for the whole previous parliament. In the event, he has announced a freeze for another year
7/8 All schools to become academies
As reported yesterday the Chancellor unveiled legislation to turn all schools into academies. He said all schools would either be academies or on their way to being academies by 2020, and that funding had been set aside to fund the change
8/8 Lifetime ISA
The Chancellor announced a new savings account to encourage under-40s to save for retirement – for every £4 saved, the Government will top this up by £1 up to the value of £4,000 a year. Tax-free ISAs will also be increased from £15,000 to £20,000
He said: "The price of failure is being borne by some of the most vulnerable within our society - the disabled being robbed of up to £150 a week, these aren't the actions of a responsible statesperson, they are the actions of a cruel and callous Government that sides with the wrong people and punishes the most vulnerable and poorest within our society."
"Politics is all about priorities and the Tories have nailed theirs to the doors of parliament today," he said.
"The Chancellor confirmed their plans to take £4.5bn from disabled people, including funds that help people find work, as well as support for those who need help to use the toilet or get dressed.
"It’s a shameful way to govern and even with such brutal cuts the Tories are failing by their own measure on debt and borrowing, as they can’t get the economy growing properly."