How do I submit a tax return? You can submit a tax return online at the following website: https://www.gov.uk/self-assessment-tax-returns. Related articles What if I think the information on my Tax Statement is incorrect? When do I need to submit a tax return? Account funding deadlines for Tax Year End What taxes may I be liable to pay if I have a personal account? How has the Balanced portfolio performed? Comments 0 comments Please sign in to leave a comment.