{"id":2203,"date":"2026-04-11T15:36:16","date_gmt":"2026-04-11T15:36:16","guid":{"rendered":"https:\/\/www.taxes4u.co.uk\/?page_id=2203"},"modified":"2026-04-12T09:18:22","modified_gmt":"2026-04-12T09:18:22","slug":"blog-self-assessment-tax-return-uk-2025-2026","status":"publish","type":"page","link":"https:\/\/www.taxes4u.co.uk\/lt\/blog-self-assessment-tax-return-uk-2025-2026","title":{"rendered":"Did\u017eiosios Britanijos savaranki\u0161ko pajam\u0173 mokes\u010dio deklaracija 2025\/26 m.: k\u0105 reikia \u017einoti ir kaip pateikti"},"content":{"rendered":"<h5>\n\t\t\t\tTinklara\u0161tis\n\t\t\t<\/h5>\n\t<h1>\n\t\t\t\tDid\u017eiosios Britanijos savaranki\u0161ko pajam\u0173 mokes\u010dio deklaracija 2025\/26 m.: k\u0105 reikia \u017einoti ir kaip pateikti\n\t\t\t<\/h1>\n<figure itemscope=\"\" itemtype=\"https:\/\/schema.org\/ImageObject\">\n\t\t\t\t<a href=\"https:\/\/www.taxes4u.co.uk\/wp-content\/uploads\/2026\/04\/Self-Assessment-Blog-Post-Image.png\" target=\"_self\" itemprop=\"url\">\n\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.taxes4u.co.uk\/wp-content\/uploads\/2026\/04\/Self-Assessment-Blog-Post-Image.png\" alt=\"Self Assessment Tax Return UK 2025\/26 - what you need to know and how to file\" height=\"1024\" width=\"1536\" title=\"Sav\u0119s vertinimo mokes\u010di\u0173 deklaracija JK 2025\/26\" onerror=\"this.style.display='none'\" loading=\"lazy\">\n\t\t\t\t<\/a>\n\t<\/figure>\n\t<h2>\n\t\t\t\tAr Jums Reikia Pateikti Sav\u0119s Vertinimo Mokes\u010di\u0173 Deklaracij\u0105?\n\t\t\t<\/h2>\n\t\t\t<p>&nbsp;If you&#8217;re self-employed, a sole trader, a landlord, or earning income outside of PAYE, you need to file a&nbsp;self assessment tax return UK 2025\/26 with HMRC. For many people, especially those new to the UK tax system &#8211; this process feels complicated. It doesn&#8217;t have to be. This guide walks you through everything you need to know: what Self Assessment is, who needs to file, key deadlines, what to include, and how to avoid penalties.&nbsp;Help is available in English, Russian, Lithuanian and Romanian languages &#8211; if you&#8217;d prefer to speak with us in your language, <a href=\"https:\/\/www.taxes4u.co.uk\/lt\/contact\/\">susisiekite su Taxes4u \u0161iandien<\/a>.<\/p>\t\n\t<h2>\n\t\t\t\tKas yra savaranki\u0161ko mokestinio \u012fvertinimo mokestin\u0117 deklaracija ir ar man reikia j\u0105 pateikti?\n\t\t\t<\/h2>\n\t\t\t<p>&nbsp;Self Assessment is the system HMRC uses to collect Income Tax from people whose tax isn&#8217;t automatically deducted from their wages. If you&#8217;re employed and only earn a salary, your employer handles your tax through PAYE (Pay As You Earn). But if you have other income &#8211; from self-employment, rental income, investments, or certain benefits &#8211; HMRC requires you to report it yourself through a Self Assessment tax return.&nbsp;You need to file a Self Assessment tax return if, in the 2025\/26 tax year, any of the following apply to you:<\/p><ul><li>J\u016bs dirbote savaranki\u0161kai kaip vienintelis savininkas ir u\u017edirbote daugiau nei 1 000 svar\u0173 sterling\u0173.<\/li><li>You&#8217;re a partner in a business partnership<\/li><li>J\u016bs u\u017edirbote pajam\u0173 i\u0161 nuomos turto<\/li><li>J\u016bs\u0173 bendrosios pajamos vir\u0161ijo 100 000 svar\u0173 sterling\u0173<\/li><li>J\u016bs gavote pajamas i\u0161 u\u017esienio<\/li><li>Jums reikia sumok\u0117ti kapitalo prieaugio mokest\u012f<\/li><li>Gavote neapmokestint\u0173 pajam\u0173, toki\u0173 kaip arbatpinigiai ar komisiniai<\/li><li>J\u016bs pretendavote \u012f vaiko pa\u0161alp\u0105, o j\u016bs ar j\u016bs\u0173 partneris u\u017edirbote daugiau nei 60 000 svar\u0173 sterling\u0173<\/li><\/ul>&nbsp;If you&#8217;re not sure whether you need to file,&nbsp;<a href=\"https:\/\/www.gov.uk\/self-assessment-tax-returns\" target=\"_blank\" rel=\"noopener\">HMRC&#8217;s official Self Assessment guidance<\/a>&nbsp;has a simple checker &#8211; or you can ask Taxes4u and we&#8217;ll confirm for you.<p><\/p>\t\n\t<h2>\n\t\t\t\tPagrindin\u0117s 2025\/26 m. mokes\u010di\u0173 met\u0173 datos\n\t\t\t<\/h2>\n\t\t\t<p>&nbsp;Praleidus termin\u0105 gresia automatin\u0117s baudos, tod\u0117l \u0161ias datas verta i\u0161sisaugoti:<\/p><ul><li>5 October 2026&nbsp;&#8211; Register for Self Assessment if you&#8217;re filing for the first time. You must register by this date to receive your Unique Taxpayer Reference (UTR) number in time to file.<\/li><li>31 October 2026&nbsp;&#8211; Deadline for filing a&nbsp;paper&nbsp;Self Assessment return for 2025\/26.<\/li><li>31 January 2027&nbsp;&#8211; Deadline for filing&nbsp;online&nbsp;and for paying any tax owed. This is the most important date for the majority of taxpayers.<\/li><li>31 July 2027&nbsp;&#8211; Second payment on account (advance payment towards next year&#8217;s tax bill), if applicable.<\/li><\/ul>&nbsp;The January 31 deadline is the one most people miss. Filing even one day late triggers an automatic \u00a3100 penalty &#8211; and charges continue to build the longer the return remains unfiled. If you&#8217;ve already missed a deadline, take a look at our guide on <a href=\"https:\/\/www.taxes4u.co.uk\/lt\/blog-late-tax-return-penalties-and-appeals\/\">V\u0117luojan\u010dio mokes\u010di\u0173 deklaracijos pateikimo baudos ir kaip jas apsk\u0173sti<\/a>.<p><\/p>\t\n\t<h2>\n\t\t\t\tKokias pajamas \u012ftraukti \u012f sav\u0119s vertinim\u0105\n\t\t\t<\/h2>\n\t\t\t<p>&nbsp;Your Self Assessment tax return must include&nbsp;all&nbsp;taxable income you received during the tax year (6 April 2025 to 5 April 2026). This includes:<\/p><ul><li>Self-employment income&nbsp;&#8211; everything you earned from your business or freelance work, before expenses<\/li><li>Employment income&nbsp;&#8211; even if you also have a PAYE job, you must declare this alongside your self-employment income<\/li><li>Rental income&nbsp;&#8211; income from letting out property, including rooms in your own home above the Rent a Room Scheme limit<\/li><li>Savings interest and dividends&nbsp;&#8211; if these exceed your tax-free allowances<\/li><li>Foreign income&nbsp;&#8211; income earned abroad, including pensions from overseas<\/li><li>Capital gains&nbsp;&#8211; profit from selling assets such as property, shares, or a business<\/li><\/ul>&nbsp;You do not need to include income that falls within your tax-free allowances. The Personal Allowance for 2025\/26 is \u00a312,570 &#8211; income below this threshold is not taxed.<p><\/p>\t\n\t<h2>\n\t\t\t\tLeidziami atskaitymai, kuriuos galite reikalauti\n\t\t\t<\/h2>\n\t\t\t<p>&nbsp;If you&#8217;re self-employed, you can deduct&nbsp;allowable business expenses&nbsp;from your income before calculating how much tax you owe. This reduces your tax bill &#8211; so it&#8217;s worth knowing what qualifies.&nbsp;Common allowable expenses for sole traders include:<\/p><ul><li>Biuro i\u0161laidos (kanceliarin\u0117s priemon\u0117s, pa\u0161tas, spausdintuvo da\u017eai)<\/li><li>Travel costs for business (fuel, train tickets, parking &#8211; not commuting)<\/li><li>Drabu\u017eiai, reikalingi tik darbui (uniformos, apsaugin\u0117 apranga)<\/li><li>Darbo j\u0117gos s\u0105naudos (atlyginimai, subrangov\u0173 mokes\u010diai, darbdavio socialinio draudimo \u012fmokos)<\/li><li>Prek\u0117s, kurias perkate, kad parduotum\u0117te (akcijos, \u017ealiavos)<\/li><li>Finansin\u0117s i\u0161laidos (banko mokes\u010diai, draudimas, apskaitos paslaug\u0173 \u012fkainiai)<\/li><li>Use of home as office &#8211; a proportion of your bills if you work from home<\/li><li>Rinkodara ir reklama<\/li><li>Mokymai, tiesiogiai susij\u0119 su j\u016bs\u0173 verslu<\/li><\/ul>&nbsp;You cannot claim personal expenses &#8211; only costs that relate directly to running your business. If something is used partly for business and partly personally (such as a mobile phone), you can claim the business proportion only.<p><\/p>\t\n\t<h2>\n\t\t\t\tKaip i\u0161vengti baud\u0173 u\u017e pav\u0117luot\u0105 pateikim\u0105\n\t\t\t<\/h2>\n\t\t\t<p>&nbsp;Mokes\u010di\u0173 ir muit\u0173 tarnyba (HMRC) taiko baudas automati\u0161kai, kai deklaracijos pateikiamos v\u0117lu. Paskir\u0173 strukt\u016bra yra tokia:<\/p><ul><li>1 day late:&nbsp;Automatic \u00a3100 penalty &#8211; even if you owe no tax<\/li><li>3 months late:&nbsp;\u00a310 per day for up to 90 days (maximum \u00a3900)<\/li><li>6 months late:&nbsp;An additional penalty of 5% of the tax due, or \u00a3300 &#8211; whichever is greater<\/li><li>12 months late:&nbsp;A further 5% or \u00a3300 penalty on top<\/li><\/ul>&nbsp;The simplest way to avoid penalties is to file on time. If you do receive a penalty and you have a genuine reason for filing late &#8211; such as a serious illness, bereavement, or a problem with HMRC&#8217;s own systems &#8211; you may be able to appeal. Our&nbsp;<a href=\"https:\/\/www.taxes4u.co.uk\/lt\/services-penalties-and-appeals-for-late-tax-return-submissions\/\">Baudos ir apeliacij\u0173 tarnyba<\/a>&nbsp;can help you challenge a penalty decision.&nbsp;Even if you can&#8217;t pay the tax owed by the deadline, you should still file your return on time to avoid the late filing penalty on top of any interest on unpaid tax.<p><\/p>\t\n\t<h2>\n\t\t\t\tKaip Taxes4u pateikia j\u016bs\u0173 savaranki\u0161ko ataskaitos mokes\u010di\u0173 deklaracij\u0105\n\t\t\t<\/h2>\n\t\t\t<p>&nbsp;Filing a Self Assessment tax return involves more than just filling in numbers. You need to know which income to declare, which expenses are allowable, how to handle payments on account, and how to avoid common errors that trigger HMRC enquiries.&nbsp;Taxes4u handles Self Assessment returns for sole traders, freelancers, landlords, and employees with additional income across the UK. We work in English, Russian, and Lithuanian &#8211; so if navigating HMRC paperwork in a second language has been holding you back, we can help.&nbsp;Our process is straightforward:<\/p><ol><li>J\u016bs mums siun\u010diate pajamas ir i\u0161laidas u\u017e mokestinius metus<\/li><li>Mes paruo\u0161iame j\u016bs\u0173 mokes\u010di\u0173 deklaracij\u0105, nustatome visas leid\u017eiamas i\u0161skaitas ir apskai\u010diuojame j\u016bs\u0173 mok\u0117tin\u0105 mokest\u012f.<\/li><li>Mes siun\u010diame jums u\u017epildyt\u0105 deklaracij\u0105 patikrinti prie\u0161 pateikiant j\u0105 HMRC.<\/li><li>Once you confirm, we file it &#8211; accurately and on time<\/li><\/ol>&nbsp;Su\u017einokite daugiau apie m\u016bs\u0173&nbsp;<a href=\"https:\/\/www.taxes4u.co.uk\/lt\/services-self-assessment-tax-return-refund\/\">Savitvarkos mokes\u010di\u0173 deklaravimo paslauga<\/a>, \u012fskaitant m\u016bs\u0173 kainodar\u0105.<h3>&nbsp;<\/h3><h3>Reikia pagalbos su sav\u0119s vertinimu?<\/h3>&nbsp;\u201eTaxes4u\u201c tiksliai ir laiku pateikia j\u016bs\u0173 mokes\u010di\u0173 deklaracijas Jungtin\u0117s Karalyst\u0117s individualiems verslininkams, laisvai samdomiems darbuotojams ir nuomotojams. Teikiame pagalb\u0105 angl\u0173, rus\u0173 ir lietuvi\u0173 kalbomis.&nbsp;<a href=\"https:\/\/www.taxes4u.co.uk\/lt\/contact\/\">Susisiekite su mumis \u0161iandien nemokamai konsultacijai<\/a>&nbsp;&#8211; we&#8217;re here to help.<p><\/p>\t\n\t\t\t<a href=\"http:\/\/www.taxes4u.co.uk\/lt\/contact\/\" title=\"Susisiekite su m\u016bs\u0173 ekspertais dabar!\" target=\"_self\" role=\"button\" aria-label=\"Susisiekite su m\u016bs\u0173 ekspertais dabar!\">\n\t\t\t\t\t\t\tSusisiekite su m\u016bs\u0173 ekspertais dabar!\n\t\t<\/a>\n\t<h4>\n\t\t\t\tKiti tinklara\u0161\u010dio \u012fra\u0161ai, kurie jus gali sudominti\n\t\t\t<\/h4>\n\t\t\t<ul><li><a href=\"https:\/\/www.taxes4u.co.uk\/lt\/blog-mtd-late-quarterly-submission-penalty-uk\/\">MTD v\u0117luojan\u010dio prane\u0161imo bauda: praleidote ketvirtin\u012f atnaujinim\u0105?<\/a><\/li><li><a href=\"https:\/\/www.taxes4u.co.uk\/lt\/blog-the-early-birds-guide-to-maximising-your-uk-tax-return-for-2024-2025\/\">\"Ankstyvojo pauk\u0161\u010dio vadovas, kaip maksimaliai padidinti savo JK mokes\u010di\u0173 deklaracij\u0105 2024\/2025 m.<\/a><\/li><li><a href=\"http:\/\/www.taxes4u.co.uk\/lt\/blog-timelines-guidelines-and-recommendations-for-the-uk-tax-return-submission\/\">JK mokes\u010di\u0173 deklaracij\u0173 pateikimo terminai, gair\u0117s ir rekomendacijos<\/a><\/li><li><a href=\"http:\/\/www.taxes4u.co.uk\/lt\/blog-late-tax-return-penalties-and-appeals\/\">Mokes\u010di\u0173 deklaracij\u0173 pav\u0117luoto pateikimo baudos ir apeliaciniai skundai - kas tai yra ir kaip su tuo kovoti?<\/a><\/li><li><a href=\"http:\/\/www.taxes4u.co.uk\/lt\/blog-how-to-register-as-self-employed-in-the-uk-a-step-by-step-guide\/\">Kaip u\u017esiregistruoti kaip savaranki\u0161kai dirbantis asmuo JK: \u017dingsnis po \u017eingsnio vadovas<\/a><\/li><li><a href=\"https:\/\/www.taxes4u.co.uk\/lt\/blog-ultimate-guide-to-self-employed-mortgages-in-the-uk-navigating-tax-returns-sa302-and-more\/\">Galutinis savaranki\u0161kai dirban\u010di\u0173 asmen\u0173 hipotekos Jungtin\u0117je Karalyst\u0117je vadovas: Knyga: Mokes\u010di\u0173 deklaracijos, SA302 ir kt.<\/a><\/li><li><a href=\"http:\/\/www.taxes4u.co.uk\/lt\/blog-cis-registration-uk-everything-you-need-to-know-about\/\">CIS registracija JK: Viskas, k\u0105 reikia \u017einoti apie<\/a><\/li><li><a href=\"https:\/\/www.taxes4u.co.uk\/lt\/blog-utr-registration-and-cancellation-what-you-need-to-know\/\">UTR registracija ir at\u0161aukimas: k\u0105 reikia \u017einoti<\/a><\/li><\/ul>\t\n\t<h5>\n\t\t\t\tNemokamas paslaug\u0173 \u012fvertinimas\n\t\t\t<\/h5>\n\t<h2>\n\t\t\t\tKainos u\u017eklausimas\n\t\t\t<\/h2>\n\t\t\t<p>Norite aptarti buhalterin\u0117s apskaitos paslaugas jums ir j\u016bs\u0173 verslui? Susisiekite ir gaukite nemokam\u0105 ne\u012fpareigojant\u012f pasi\u016blym\u0105.<\/p>\t\n\t\t\t<a href=\"http:\/\/www.taxes4u.co.uk\/lt\/contact\/\" title=\"Gaukite pasi\u016blym\u0105\" target=\"_self\" role=\"button\" aria-label=\"Gaukite pasi\u016blym\u0105\">\n\t\t\t\t\t\t\tGaukite pasi\u016blym\u0105\n\t\t<\/a>","protected":false},"excerpt":{"rendered":"<p>Blog Self Assessment Tax Return UK 2025\/26: What You Need to Know and How to File Do You Need to File a Self Assessment Tax Return? &nbsp;If you&#8217;re self-employed, a sole trader, a landlord, or earning income outside of PAYE, you need to file a&nbsp;self assessment tax return UK 2025\/26 with HMRC. For many people, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"page-builder","ast-site-content-layout":"full-width-container","site-content-style":"unboxed","site-sidebar-style":"unboxed","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"enabled","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-2203","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Self Assessment Tax Return UK 2025\/26 | Taxes4u<\/title>\n<meta name=\"description\" content=\"Need help with your self assessment tax return? 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