A record number of people filed their self-assessment tax returns online this year. HMRC have confirmed that 6.9 million used this platform, representing 78% of the total number of tax returns. The busiest day was deadline day January 31st, which saw 572,455 people submit their form and avoid a £100 fine. The Independent newspaper reports that every year around 10% of people fail to get their form in on time and are fined the penalty. If those who have missed the deadline do not submit their returns by July 31st a further £100 penalty will be incurred.