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 When do I need to submit a tax return? Account funding deadlines for Tax Year End Tax Statements & What you need them for What if I think the information on my Tax Statement is incorrect? How will I access my Tax Statements? Comments 0 comments Please sign in to leave a comment.