PPL. PRS for Music. Flavors.me : The Digital You. Onesheet | Beautiful, maintenance-free web presences and mobile web apps for entertainment professionals. Tax return deadlines and penalties. There are some key dates each year when you must send in your Self Assessment tax return and make payments. It's important that you're aware of these dates. If you miss them you may have to pay interest and penalties. On this page: Do you need to fill in a tax return? HM Revenue & Customs (HMRC) will contact you, usually in April or May, if they already know that you need to fill in a tax return.
You'll receive a letter which explains when you'll need to send your tax return back. If HMRC hasn't contacted you, but you think you may need to complete a tax return, follow the link below to check. If HMRC asks you to complete a tax return but you think you no longer need to, let HMRC know as soon as you can.
Find out if you need to complete a tax return Telephone or write to HMRC Top Deadlines for sending in your tax return 31 October: paper returns If you send a paper tax return it must reach HMRC by midnight on 31 October. There are very few exceptions. 31 January: online returns Example 31 January. Intellectual Property Office - Welcome to the Intellectual Property Office.