The huge sums that the Government has borrowed during the Covid-19 crisis have pushed the deficit to its highest point since the end of the Second World War, according to new figures.
The Office for National Statistics said that public sector net borrowing - the Government's debt - reached £303.1billion in the financial year to the end of March.
This was 14.5% of gross domestic product (GDP), the highest level since 1946, when the deficit hit 15.2% of GDP.
It is a rise from a deficit of £57billion in the tax year ending March 2020.
In the post-war era the debt levels peaked in the aftermath of the 2008 financial crisis, hitting around 10% of GDP. The average deficit since 1970 has been 3.4% of GDP.
The last year's borrowing pushed public sector net debt up to £2,141.7 billion, which is 97.7% of GDP - the biggest proportion since the early 1960s.
The Government has spent billions of pounds propping up the economy since the pandemic started more than a year ago.
Notably it covered salaries of staff whose workplaces closed down during the country's many lockdowns.
The furlough scheme has so far cost the taxpayer around £58 billion, according to data from last month.
KPMG senior economist Michal Stelmach said: "Rising debt is largely an unfortunate consequence of the Government's focus on shielding the economy as much as possible from the impact of Covid-19.
"However, doing otherwise could have created long-lasting scars which would be far worse for fiscal sustainability."
Mr Stelmach said that while borrowing has so far risen to pay for increased spending, the Government is likely to need to borrow to make up for a shortfall in the tax it collects this year.
This is partly because of Chancellor Rishi Sunak's £12.5 billion "super deduction" on corporation tax for some businesses.
This will be coupled with lower amounts of income tax as furlough ends.
