HMRC have published details of the final filing results for the SA deadline recently announcing that 9.61 million people filed their 2011–12 tax return on time this year representing around 93% of the tax-return population.

A reminder was also issued that anyone who hasn't yet sent their 2011–12 tax return will have already incurred a £100 late-filing penalty.

Not unexpectedly, the busiest day for online returns was 31 January, when HMRC received 578,000. The busiest hour occurred between 4pm and 5pm on 31 January, when 46,000 returns – more than 12 per second – were received by HMRC.

Even the Christmas holidays didn't stop the flow of online returns to HMRC, with 6,233 people putting the festivities on hold and sending their tax return online over the Christmas Day to Boxing Day period. New Year's Eve saw 27,161 people file online while another 12,077 had clear enough heads to so on New Year's Day.