{"id":861,"date":"2025-12-16T09:13:31","date_gmt":"2025-12-16T09:13:31","guid":{"rendered":"https:\/\/tax2u.co.uk\/blog\/?p=861"},"modified":"2025-12-16T09:13:32","modified_gmt":"2025-12-16T09:13:32","slug":"2024-2025-tax-return-reminder-who-needs-to-file-what-to-submit-and-what-happens-if-you-dont","status":"publish","type":"post","link":"https:\/\/tax2u.co.uk\/blog\/2025\/12\/16\/2024-2025-tax-return-reminder-who-needs-to-file-what-to-submit-and-what-happens-if-you-dont\/","title":{"rendered":"2024-2025 tax return reminder: Who needs to file, what to submit and what happens if you don\u2019t"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The <strong>Self Assessment deadline for the 2024-2025 tax year is fast approaching<\/strong>, and every year HMRC issues millions of penalties simply because people miss it or assume they don\u2019t need to file.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here\u2019s the thing.<br>If HMRC expects a return from you and you don\u2019t submit it on time, penalties apply automatically even if you don\u2019t owe any tax.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This guide is a straightforward reminder of <strong>who must file a tax return for 2024-25, what information you need, and what happens if you miss the deadline<\/strong>.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Key deadline for 2024-2025<\/strong><\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>31 January 2026<\/strong><br><\/li>\n\n\n\n<li><strong>Deadline to:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Submit your <strong>online Self Assessment tax return<\/strong><\/li>\n\n\n\n<li>Pay any tax owed for the <strong>2024\u20132025 tax year<\/strong><\/li>\n\n\n\n<li>Make your <strong>first payment on account<\/strong> (if applicable)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Miss this date and penalties start immediately.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Who needs to file a tax return for 2024-2025?<\/strong><\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">You must submit a Self Assessment tax return if <strong>any<\/strong> of the following apply during the 6 April 2024 to 5 April 2025 tax year:<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Self-Employed and Contractors<\/strong><\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>You were <strong>self-employed or a sole trader<\/strong><\/li>\n\n\n\n<li>You earned <strong>over \u00a31,000<\/strong> in self-employment income<\/li>\n\n\n\n<li>You worked under <strong>CIS (Construction Industry Scheme)<\/strong> and had tax deducted<\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Company Directors<\/strong><\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>You were a director of a limited company (unless it was unpaid and very limited)<\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>High Earners<\/strong><\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Your total income was <strong>over \u00a3100,000<\/strong><\/li>\n\n\n\n<li>You received <strong>Child Benefit<\/strong> and you or your partner earned over \u00a350,000 (High Income Child Benefit Charge)<\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Rental and Investment Income<\/strong><\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>You earned income from <strong>property or renting<\/strong><\/li>\n\n\n\n<li>You received <strong>dividends, savings interest or investment income<\/strong> not fully taxed at source<\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Other Common Reasons<\/strong><\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>You had <strong>foreign income<\/strong><\/li>\n\n\n\n<li>You made <strong>capital gains<\/strong> (sold shares, crypto, or property)<\/li>\n\n\n\n<li>HMRC <strong>sent you a notice to file<\/strong> (this alone means you must submit)<\/li>\n<\/ul>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">If you\u2019re unsure, assume you do need to file until confirmed otherwise.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What you need to file for 2024-2025<\/strong><\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Here\u2019s what most people need to prepare before submitting:<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Income Details<\/strong><\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Self-employment income and expenses<\/li>\n\n\n\n<li>CIS statements (monthly deduction statements)<\/li>\n\n\n\n<li>Employment income (P60, P45)<\/li>\n\n\n\n<li>Rental income<\/li>\n\n\n\n<li>Dividend and savings income<\/li>\n\n\n\n<li>Foreign income (if applicable)<\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Allowable Expenses and Reliefs<\/strong><\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Business expenses<\/li>\n\n\n\n<li>Mileage and vehicle costs<\/li>\n\n\n\n<li>Home office use<\/li>\n\n\n\n<li>Pension contributions<\/li>\n\n\n\n<li>Gift Aid donations<\/li>\n\n\n\n<li>Professional fees<\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Other Information<\/strong><\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Student loan details<\/li>\n\n\n\n<li>Child Benefit received<\/li>\n\n\n\n<li>Capital gains calculations<\/li>\n\n\n\n<li>National Insurance contributions<\/li>\n<\/ul>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Getting this right matters. Errors can lead to <strong>underpaid tax, HMRC enquiries, or penalties later<\/strong>.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What happens if you don\u2019t file on time?<\/strong><\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">This is where people get caught out.<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Automatic Penalties<\/strong><\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u00a3100 penalty<\/strong> the day after the deadline, even if no tax is owed<\/li>\n\n\n\n<li>After <strong>3 months<\/strong>: daily penalties up to \u00a3900<\/li>\n\n\n\n<li>After <strong>6 months<\/strong>: extra penalty of 5% of the tax due (or \u00a3300)<\/li>\n\n\n\n<li>After <strong>12 months<\/strong>: another 5% or \u00a3300 added<\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Interest on Unpaid Tax<\/strong><\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Interest is charged daily until paid in full<\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>HMRC Enforcement<\/strong><\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tax estimates raised by HMRC (often higher than reality)<\/li>\n\n\n\n<li>Collection action or debt recovery<\/li>\n\n\n\n<li>Impact on mortgage or loan applications<\/li>\n<\/ul>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Once penalties start, they <strong>stack quickly<\/strong>.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>If you can\u2019t pay by 31 January 2026<\/strong><\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">You should still <strong>file your return on time<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">HMRC is far more flexible about <strong>payment plans<\/strong> than late filing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Options may include:<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Time to Pay arrangements<\/strong><\/li>\n\n\n\n<li>Spreading payments monthly<\/li>\n\n\n\n<li>Reducing penalties by acting early<\/li>\n<\/ul>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Filing late removes most of these options.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Already filed before? Still check this year<\/strong><\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Even if you\u2019ve filed before, things change:<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Income increases<\/li>\n\n\n\n<li>New side work<\/li>\n\n\n\n<li>CIS deductions<\/li>\n\n\n\n<li>Rental or investment income<\/li>\n\n\n\n<li>Child Benefit rules<\/li>\n<\/ul>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Assuming \u201cnothing changed\u201d is one of the most common mistakes.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>How Tax2u can help<\/strong><\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">At <strong>Tax2u<\/strong>, we help people file correctly and on time every year by:<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Confirming whether you need to file<\/li>\n\n\n\n<li>Checking all allowable expenses and reliefs<\/li>\n\n\n\n<li>Submitting your 2024\u20132025 return accurately<\/li>\n\n\n\n<li>Reducing tax where possible<\/li>\n\n\n\n<li>Avoiding penalties before they start<\/li>\n<\/ul>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49<a href=\"https:\/\/www.tax2u.co.uk\/tax-return\/self-assessment\"> <strong>If you haven\u2019t filed yet, now is the time to act.<\/strong><\/a><\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Final reminder<\/strong><\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tax year:<\/strong> 6 April 2024 \u2013 5 April 2025<\/li>\n\n\n\n<li><strong>Deadline:<\/strong> <strong>31 January 2026<\/strong><\/li>\n\n\n\n<li><strong>Miss it:<\/strong> penalties apply automatically<\/li>\n\n\n\n<li><strong>Unsure:<\/strong> get advice before the deadline<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n","protected":false},"excerpt":{"rendered":"<p>The Self Assessment deadline for the 2024-2025 tax year is fast approaching, and every year&#8230;<\/p>\n","protected":false},"author":2,"featured_media":862,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,6],"tags":[245,246,243,244],"class_list":["post-861","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hmrc-letters-fines-appeals","category-self-assessment-income-tax","tag-hmrc-deadlines","tag-penalties","tag-self-assessment","tag-tax-return"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - 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