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    TaxKilnUK tax guidance

    Moving Abroad → SRT plus Spanish residence test

    UK SRT plus Spanish AEAT Residence Test (UK to Spain)

    Determining your tax residence on the UK-Spain corridor requires running two independent tests. The UK applies the Statutory Residence Test (Schedule 45 Finance Act 2013) on a UK fiscal-year basis (6 April to 5 April). Spain applies the AEAT residence test under Article 9 of Ley 35/2006 (LIRPF) on a calendar-year basis: more than 183 days physical presence, OR centre of economic interests in Spain, OR a rebuttable presumption that the family is habitually resident in Spain. Each test is satisfied independently — meeting any one limb makes you Spanish-resident for the whole calendar year. Spain has no statutory split-year mechanism equivalent to the UK SRT split-year cases for income tax purposes; the year of move is either fully resident or fully non-resident from the Spanish perspective.

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    Guidance, not advice. We explain the rules, we don't assess your situation. Always seek financial or tax advice from your accountant, or contact HMRC. Read our editorial scope →

    In plain English

    Two countries, two residence tests, running in parallel. The UK SRT is explained in detail at /moving-abroad/srt. The Spanish side has three independent triggers under Article 9 LIRPF: 183 days, economic interests, or family presumption. Hit any one and you are Spanish-resident for the whole calendar year — Spain does not split the year for income tax. The asymmetry is the main practical problem. The UK fiscal year runs 6 April to 5 April; Spain uses the calendar year. The same physical move can leave you UK-resident under split-year Case 1/3 for part of 2025/26 AND Spanish-resident for the whole of calendar 2025 if you exceed 183 days. Where you are dual-resident under both domestic tests for any period, the UK-Spain DTA 2013 Article 4 tie-breaker resolves treaty residence for treaty-allocated income. Practical Spanish registration: Modelo 030 (tax census), NIE or post-Brexit TIE, and town-hall Empadronamiento.

    How it works

    UK side — applying the SRT

    Run the three-tier SRT in order: Automatic Overseas Tests, then Automatic UK Tests, then Sufficient Ties. Where you start full-time work overseas (in Spain), split-year Case 1 typically applies in the year of departure. Where your only home becomes overseas, Case 3 may apply. Full mechanics at /moving-abroad/srt. The SRT outcome decides UK domestic residence; the treaty may then override for treaty-allocated income.

    Spanish side — three independent limbs of Art. 9 LIRPF

    (1) 183-day rule: count days of physical presence in a calendar year. Spain treats sporadic absences as Spanish presence unless tax residence in another country is proven by certificate. A day is generally counted if you are in Spain at any point during it. (2) Centre of economic interests: where is the principal base of your activities/economic interests — main employment, business, real-estate holdings, financial assets? AEAT applies this even on few-day stays where economic ties are otherwise dominantly Spanish. (3) Family presumption: spouse plus minor dependent children habitually resident in Spain creates a rebuttable presumption of your residence. Rebuttal requires substantive proof of residence elsewhere (residence certificates, tax payments, social life).

    Calendar-year vs UK fiscal-year — practical timing

    Spain assesses residence over the calendar year (1 January to 31 December). The UK uses the fiscal year (6 April to 5 April). Move dates between January and 5 April mean Spanish residence may attach to the FULL prior calendar year if you have already exceeded 183 days, while UK split-year for the fiscal year just ending may still apply. Move dates after 6 April typically align more cleanly (one country until move, the other from move). Where dual-resident in any window, DTA Article 4 tie-breaker resolves treaty residence; see /moving-abroad/spain/dta-treaty-mechanics.

    Practical registration — NIE, TIE, Modelo 030, Empadronamiento

    NIE (Número de Identidad de Extranjero) is the foreigner ID required for any economic transaction or AEAT filing. Post-Brexit UK movers no longer get the older EU-citizen green certificate; they receive a TIE residence card (under the Withdrawal Agreement for pre-2021 arrivers, or under the new immigration framework). Modelo 030 registers you in the AEAT tax census, declares residence start date and address, and is the basis for the AEAT to recognise you as Spanish-resident. Empadronamiento at the local town hall (Padrón Municipal) records your municipal residence and is referenced by AEAT, healthcare and social security.

    Who this applies to + key conditions

    Statute + manual references

    Primary: UK: Schedule 45 Finance Act 2013 (SRT). Spain: Art. 9 Ley 35/2006 de 28 de noviembre del Impuesto sobre la Renta de las Personas Físicas (LIRPF). Treaty: UK-Spain DTA 2013 Article 4.

    Related: Modelo 030 (Spanish tax census registration); Real Decreto 240/2007 (EU citizen residence — pre-Brexit); TIE residence card (post-Brexit movers under Withdrawal Agreement or new immigration regime); Empadronamiento (town-hall residence registration)

    HMRC manual: HMRC RDR3 (SRT guidance) plus INTM156000+ (UK-Spain treaty residence)

    Common mistakes + traps

    Worked example

    James, a UK national taking a senior role in Madrid from 1 March 2026

    James was UK-resident in 2025/26. He moves to Madrid on 1 March 2026 to start a full-time employment contract. His wife and two school-age children move with him. He sells the family home in Surrey in February 2026 and rents an apartment in Madrid. He retains a UK buy-to-let.

    1. UK side, 2025/26: split-year Case 1 (starts full-time work overseas) typically applies. UK part: 6 April 2025 to 28 February 2026 (UK-resident). Overseas part: 1 March 2026 to 5 April 2026 (non-resident). Full UK SRT mechanics at /moving-abroad/srt.
    2. Spanish side, calendar 2026: James is in Spain from 1 March 2026 — roughly 306 days by 31 December. He is over the 183-day threshold AND his centre of economic interests (Madrid job, Spanish home) is Spain AND his family is habitually resident in Spain. All three Art. 9 LIRPF limbs are met. He is Spanish-resident for the FULL 2026 calendar year — including January and February 2026 before he physically arrived.
    3. Dual-residence window: 1 January to 28 February 2026 he is UK-resident (under split-year Case 1, UK part of 2025/26) AND Spanish-resident (under Art. 9 LIRPF for the full calendar year). DTA Article 4 tie-breaker applies: in January/February his permanent home was Surrey, his centre of vital interests was the UK. Treaty residence = UK to 28 February 2026, Spain from 1 March 2026. See /moving-abroad/spain/dta-treaty-mechanics.
    4. Registration steps: NIE before arrival via the Spanish consulate in London. TIE residence card within 30 days of arrival. Modelo 030 to register with AEAT, declaring 1 March 2026 as residence start. Empadronamiento at Madrid town hall.
    5. Spanish IRPF 2026 return (filed June 2027): full-year worldwide income, with treaty relief for UK-source income covered by the DTA. UK SA 2025/26 (filed by 31 January 2027): split-year basis, with SA109 declaring overseas part from 1 March 2026.

    Outcome: James is UK-resident under SRT split-year Case 1 to 28 February 2026 and Spanish-resident under Art. 9 LIRPF for the full 2026 calendar year, with treaty residence resolved by DTA Article 4. He files in both jurisdictions for 2026 with treaty mechanics governing income allocation. His UK buy-to-let continues to be UK-source rental subject to NRL scheme — see /moving-abroad/leaving-uk-procedures.

    How this connects to the rest of the framework

    Statutory Residence Test →

    Full UK SRT mechanics, Schedule 45 FA 2013.

    UK-Spain DTA mechanics →

    Treaty residence tie-breaker once dual-resident under both domestic tests.

    Modelo 720 + 721 disclosure →

    Spanish residence triggers Modelo 720 plus 721 foreign-asset disclosure.

    Beckham Law special regime →

    New Spanish residents may be eligible for the Beckham Law special regime under Art. 93 LIRPF.

    Frequently asked questions

    What happens if I miss the Self Assessment deadline?+
    The Self Assessment deadline is 31 January (online filing) for the previous tax year. Miss it and HMRC apply an automatic £100 penalty. Beyond that: £10 per day from 3 months late (capped at £900), 5% of tax due at 6 months late, and another 5% at 12 months late, under Schedule 55 of the Taxes Management Act 1970. If you have a genuine reason (serious illness, bereavement, technical issue with HMRC's systems) you can appeal with evidence; HMRC accepts reasonable excuse appeals in most genuine cases.
    Do I need an accountant or can I file Self Assessment myself?+
    Legally you can file Self Assessment yourself via gov.uk for free, most simple sole-trader returns (single income source, basic expenses) are realistic to self-file. An accountant adds real value when: your trading profit is above £40,000 (extraction-strategy decisions matter), you have multiple income streams (PAYE + self-employment + property + dividends), you've crossed the £90,000 VAT threshold, you're considering incorporation, or you have an HMRC enquiry. Expect to pay £400-£1,500/year for a typical sole-trader accountant; the cost is itself a deductible expense.
    How do payments on account work?+
    When your Self Assessment tax bill exceeds £1,000 for the first time, HMRC requires payments on account toward NEXT year's tax. Half the current bill is due 31 January (alongside the current bill); the other half is due 31 July. So your first January after crossing the threshold can hit with a double-bill: last year's balance + first payment on account. Adjust via Form SA303 if you expect next year's income to drop substantially. Payments on account don't apply if more than 80% of your tax is collected via PAYE.
    Does Spain really tax me from 1 January if I only arrived in March?+
    Yes, where any of the Art. 9 LIRPF limbs is met for the calendar year, Spanish residence attaches to the full year — including months before physical arrival, if the centre-of-economic-interests or family-presumption limb is satisfied earlier. The DTA Article 4 tie-breaker then governs which country has treaty taxing rights over income arising in those early months. The Spanish domestic position remains: worldwide income reportable on the IRPF return for the full calendar year of residence.
    What is the difference between NIE and TIE?+
    NIE (Número de Identidad de Extranjero) is the foreigner identification number issued to any non-Spanish person who has Spanish economic activity — property purchase, employment, bank account, AEAT filings. It is a number, not a residence card. TIE (Tarjeta de Identidad de Extranjero) is the physical residence card issued to non-EU foreigners (including UK nationals post-Brexit) who hold a residence permit. Pre-2021 UK arrivers under the Withdrawal Agreement receive a TIE indicating Withdrawal Agreement status; post-2020 arrivers receive a TIE indicating their immigration category (work, Digital Nomad Visa, Non-Lucrative Visa).
    Can I be UK-resident and Spanish-resident at the same time?+
    Yes, for any window where both countries' domestic residence tests are met. This is common in the year of move. Domestic dual-residence does not breach either country's law — both jurisdictions assert taxing rights on worldwide income within their windows. The UK-Spain DTA 2013 Article 4 tie-breaker resolves treaty residence (which governs treaty-allocated taxing rights). Filing obligations may persist in both states; treaty residence does not automatically extinguish the other state's domestic filing obligation. See /moving-abroad/spain/dta-treaty-mechanics.
    Does the centre-of-economic-interests test depend on where my employer is?+
    Not solely. AEAT looks at the totality of economic life — main employment income source, ongoing business activities, principal investment portfolio location, principal real-estate holdings, primary banking relationship. A UK employer paying salary into a Spanish bank account, with day-to-day work and primary economic life in Spain, is firmly Spanish under the centre-of-economic-interests test. Employer location alone does not determine the limb.

    Free + regulated-body resources

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