Plus, we share another important deadline you can't missTAXING TIMES Households risk being fined up to £1,000 by HMRC if they don’t take action TODAYHOUSEHOLDS risk being fined up to £1,000 by HMRC if they don't take action today. You need to tell the tax office today, October 5, if you need to complete a tax return and have not sent one before. 1 You need to tell the tax office you have to file a self-assessment tax return Credit: GettyThe form is used by HMRC to collect income tax. Then, a £10 daily fine applies every day you don't submit your tax return. Upon receiving the UTR you can then file a Self Assessment tax return online via the GOV.UK website or by post.
