The admission he owned a stake in his father's offshore trust may not be the end of the personal crisis for David Cameron, according to ITV News Political Editor Robert Peston.
He told News at Ten that "a lot more could go wrong for the prime minister".
Dennis Skinner was booted out after refusing to withdraw the comment he made to the Prime Minister in a debate over the tax row.
The Labour leader declared £1,850 in additional income, but was fined £100 for submitting his tax return a week late.
Chancellor George Osborne has released his tax return after the prime minister urged him to publish the records.