A record 9.45 million self-assessment tax returns were filed on time this year, with a record 7.65 million (80.9 per cent) of them filed online, says HMRC.
The Government has been heavily criticised after it was revealed that the Student Loans Company CEO was being paid via an agreed tax avoidance scheme.
The Institute of Fiscal Studies has argued that taxes in the upcoming March Budget could be viably cut in order to boost the economy.
HMRC has announced that it will not impose penalties on online self-assessment tax returns received by midnight on 2 February 2012.
Deputy Prime Minister Nick Clegg has called on the Government to go further and act faster in delivering the full £10,000 personal allowance.