Jeremy Corbyn has been branded 'chaotic' and 'sloppy' after it emerged he failed to include thousands of pounds of income on his tax return.

Aides to the Labour leader have confirmed he was receiving a pension from his time in local government worth thousands of pounds in 2014-15.

Mr Corbyn, who turned 65 in May 2014, was also getting the state pension of around £6,000 a year.

However, neither streams of income appeared on the return he published yesterday.

Asked whether the veteran left-winger had filled out the form wrongly, his spokesman told MailOnline: 'That is between him and HM Revenue & Customs,'

The issue is particularly embarrassing for Mr Corbyn as after demanding transparency from the Prime Minister, he seemingly struggled to locate a copy of his return yesterday and was then forced to admit he had been fined £100 for filing the document late.

Labour leader Jeremy Corbyn left the pensions section on his tax return for 2014-15 blank

Mr Corbyn was able to build up entitlements during a nine-year spell as a councillor in Haringey, London.

The spokesman initially suggested that the pension was 'not taxable'.

Nearly 10 hours later the position shifted to saying that all taxes due on the income had been collected through the PAYE system.

Mr Corbyn's office also claimed that he had sent the taxman documents about his pensions.

Jeremy Corbyn's tax return was sent in a week late and incurred a £100 fine, which MPs are warned about on the tax return (pictured above)

The tax return for 2014/15 was dated February 6 2016 - a week after the January 31 deadline

'All his earnings were declared including his pension earnings,' the spokesman said.

However, an HMRC spokeswoman confirmed that such figures needed to be included on a tax return.

The spokeswoman said: 'Generally, for all UK taxpayers in Self Assessment, all income received needs to be noted on a Self Assessment tax return, including income from employment and pensions and any tax already taken.'

Shadow chancellor John McDonnell did declare his £14,000 a year local government pension as income on his 2014-15 tax return.

Danny Cox of financial services firm Hargreaves Lansdown said although Mr Corbyn was likely to have paid the right level of tax, he did appear to have committed an offence.

LABOUR ARE PLANNING TO BAN TAX-FREE GIFTS FOR CHILDREN An inheritance tax crackdown that would ban people from giving tax-free gifts to their children is being examined by Labour. Senior party figures seized on revelations that David Cameron's mother Mary gave him a £200,000 gift following the death of his father in 2010 as evidence that the inheritance tax system is flawed. The rules on gifts mean that if Mrs Cameron lives for another two years then her son will not be liable for any inheritance tax on the sum. In theory the move could save him up to £80,000. Financial experts yesterday pointed out that the rules on gifts in the inheritance tax system are legitimately used by thousands of families, with people often trying to help their children buy a home or fund their education. But shadow chancellor John McDonnell said the rules would now be included in a wide-ranging Labour Party review of the tax system. Mr McDonnell said people were 'angry' about the tax system because it was not seen to be 'fair'. He said he would reverse Tory plans to raise the inheritance tax threshold from £325,000 to £500,000. Mark Serwotka, of the PCS union, said cash gifts to children should be taxed by a future Labour government. Advertisement

'You are duty bound to declare all of your tax affairs on your tax return,' Mr Cox said.

'It is certainly pretty sloppy not to have declared money on your tax return.'

Tory MP Alec Shelbrooke told MailOnline: 'What we have seen in the last 24 hours is an absolutely chaotic personal life.

'How on Earth could he run the country?

'It is a typical socialist doctrine - "do as I say and not as I do".'

The confusion emerged as the row over politicians’ financial affairs raged on.

David Cameron mounted a passionate defence of ‘aspiration’ and wealth creation in the Commons yesterday, condemning critics who had wrongly ‘traduced’ his stockbroker father Ian over his offshore funds.

Downing Street released a summary of the Prime Minister's tax returns covering the past six years over the weekend in a bid to restore trust after damaging revelations about his links to the Blairmore investment vehicle.

They showed that Mr Cameron had an income of around £1.1 million over the period and paid some £400,000 in tax. Renting out his London home while he lives in a grace-and-favour apartment has been bringing in more than £90,000 a year.

Labour has lashed out at the revelation that Mr Cameron received gifts totalling £200,000 from his mother Mary after the death of her husband Ian in 2010.

If he had received the money as an inheritance it could have attracted duties of up to £80,000.

Meanwhile, George Osborne is still under scrutiny after disclosing his return for 2014-15 – showing he had an income of nearly £200,000 including £44,000 in dividends from his family’s luxury wallpaper firm.

But the Chancellor’s aides insisted he will not be following the PM’s example by revealing information for previous years – arguing that those details are not of ‘particular interest’.

David Cameron and Chancellor George Osborne during the Commons debate yesterday, in which the Prime Minister made a passionate defence of 'aspiration' and his father Ian

Labour MP Yvette Cooper has demanded to know whether Mr Osborne was right in 2012, when he suggested during an interview that he would not benefit from the cut in the top rate of tax from 50p to 45p for earnings over £150,000.

‘So how does Osborne explain difference between 2012 claim that he wasn't top rate tax payer/didn't benefit from tax cut & the 2014 facts?’ for former frontbencher posted on Twitter.

According to the Treasury, Mr Osborne was referring to the 2010-11 tax year when he received less income from renting out his London and no dividends.

London Mayor Boris Johnson pitched in by disclosing that his tax and income details for the past four years – revealing he has earned more than £2 million and paid nearly £1 million in tax. The money came from his official salary, columns for the Daily Telegraph, and royalties from books.

Mr Corbyn's tax return for 2014-15 - which he filled in himself rather than using an accountant - included MP pay of around £70,000, and a total of £1,350 for nine lectures he gave about the Foreign Office to Capita.

The Opposition Leader’s office said he had declared £150 too much income from the lectures.

Former foreign secretary Lord Hague

Former foreign secretary Lord Hague called for 'maturity' in the debate over politicians' finances.

'The consequence of greater transparency in tax, in medical records, whatever else it may be among leaders, is that there has to be a maturity in the public debate about those things and a recognition that the circumstances and habits of people who are effective leaders will vary greatly, and that those personal circumstances are not necessarily a good guide to how good they will be as a prime minister, a chancellor or anything else,'Mr Hague told BBC Radio 4's Today programme.

'We’ve had leaders in the history of our country who’ve had chaotic personal finances, like William Pitt the Younger, but who were brilliant at handling the nation’s finances.

'We’ve had leaders who’ve had tax returns, like Churchill, that would have been more difficult to defend in public than Prime Minister David Cameron’s tax returns.

'But Churchill was the greatest leader of modern times.