given away or otherwise disposed of an asset such as a holiday home or shares, you'll need to complete a tax return and the Capital Gains Tax pages. If you don't think you need a tax return If HMRC has asked you to complete a tax return and you've checked the information above and think you don't need one, call the Self Assessment Helpline. They will tell you whether you still need to complete a tax return. How to get a tax return You need to register for Self Assessment before you can get a tax return. HMRC will use the information you provide to set up the right records for you and will send you a Unique Taxpayer Reference. You'll then receive a letter, each year usually in April, telling you to complete your return. You can send your tax return online or on paper but there are lots of benefits to sending it online. Benefits of filing online You can save time and paperwork by sending your return online. You'll receive an automatic acknowledgment and also find out what you owe or are due back right away, because the figures are calculated for you instantly.