The prime minister traded blows with Jeremy Corbyn over tax affairs in the first PMQs since the Panama papers leak.
The Prime Minister drew attention to the Labour leader's 2014-15 tax return which did not contain details of his pension income and which was the subject of a £100 fine for being submitted late.
Mr Cameron said: "I thought your tax return was a metaphor for Labour policy - it was late, it was chaotic, it was inaccurate, it was uncosted."
Mr Corbyn hit back: "I'm grateful to the Prime Minister for drawing attention to my own tax return, warts and all.
"The warts being my handwriting, all being my generous donation to HMRC - I actually paid more tax than some companies owned by people that you might know quite well."