The first tax return — Alicante

You thought leaving the UK meant leaving HMRC. You did not.

Becoming a Spanish tax resident in Alicante does not cancel your UK obligations — it layers a new set of Spanish ones on top of whatever you still owe or need to report to HMRC. The two systems run in parallel for longer than most people expect, and the Valencian Community, where Alicante sits, has its own regional tax variations that affect what you actually pay. This article is for UK nationals who have moved to Alicante, or are about to, and need to understand what their first Spanish tax return involves, what the UK still wants from them, and where the common and expensive mistakes happen. If you arrived thinking the paperwork would sort itself out, this is the article that will convince you to hire a gestor before the end of your first summer.

What the first tax return actually looks like in Alicante

How Spanish tax residency is triggered for Alicante residents

Spain's tax authority, the Agencia Tributaria, considers you a tax resident if you spend more than 183 days in Spain in a calendar year — and Alicante's climate makes this almost inevitable once you have settled. The count is cumulative and includes sporadic absences, so a few weeks back in the UK for Christmas does not reset the clock. From the moment you cross that threshold, Spain claims the right to tax your worldwide income: your UK salary, your rental income from a property in Birmingham, your ISA interest, your pension. All of it.

Your first Spanish tax return — the Declaración de la Renta, filed using Modelo 100 — covers the previous calendar year and is submitted between April and June. If you became resident partway through a year, your first return may only cover a partial year, but the filing obligation still applies. The Agencia Tributaria's online system, Renta Web, is functional but entirely in Spanish, which is the first practical reason to engage a local gestor or asesor fiscal rather than attempting it alone.

What the Valencian Community adds to your tax bill

Spain's income tax is split between a national rate and a regional rate, and the Valencian Community — which governs Alicante — sets its own regional component. The combined rates in 2026 run from 19% on the first €12,450 of taxable income up to 47% on income above €300,000 (Source: Agencia Tributaria). The Valencian Community applies rates at the higher end of the regional spectrum compared to places like Madrid, which has historically offered regional income tax reductions. This is not a reason to avoid Alicante, but it is a reason to model your effective rate before you arrive rather than after your first bill.

There are deductions available at the regional level — for renting your primary residence, for family circumstances, for disability — and a good local asesor fiscal will know which Valencian-specific reliefs apply to your situation. The national deductions, including the general personal allowance of €5,550 for individuals under 65 (Source: Agencia Tributaria), apply regardless of which region you live in.

What surprises people

The UK tax year and the Spanish tax year do not align

The UK tax year runs April to April. Spain's runs January to December. In your first year of residency, you will almost certainly be filing in both countries simultaneously for overlapping periods, and the income figures will not map neatly onto each other. A UK self-assessment return due in January 2026 may cover income from April 2024 to April 2025, while your Spanish Modelo 100 filed in May 2026 covers January to December 2025. The overlap is real, the double-counting risk is real, and the double-taxation treaty between the UK and Spain exists precisely to prevent you paying full tax twice — but applying it correctly requires knowing which country has primary taxing rights over each income type (Source: HMRC).

Alicante's large expat community creates a false sense of security

Because English is widely spoken in the port area and expat-facing services are abundant, it is easy to assume that someone in your social circle has already figured this out and that informal advice will be sufficient. It will not. The expat community in Alicante skews toward retirees, many of whom have simpler tax profiles — a UK pension, a Spanish property, not much else. If you have UK rental income, share options, a limited company, or any investment portfolio, your situation is materially more complex than the average conversation at the marina will reflect. The gestor who handles your neighbour's straightforward pension return may not be equipped for your circumstances.

The numbers

Alicante cost of living and property benchmarks relevant to tax planning

The figures above matter for tax planning in ways that are not immediately obvious. Your rental costs in Alicante are not deductible against Spanish income tax unless you qualify for specific Valencian residential rental relief — but they do define the lifestyle cost baseline against which you should be modelling your net-of-tax income. The 8% Valencian property transfer tax is a one-time acquisition cost, but it also affects the capital gains calculation when you eventually sell, since it forms part of your acquisition cost basis. Private health insurance, meanwhile, is not tax-deductible for most residents under standard Spanish rules, making it a genuine out-of-pocket fixed cost that your tax planning needs to absorb rather than offset.

What people get wrong

Assuming the UK–Spain double taxation treaty eliminates all complexity

The treaty exists and it works, but it does not mean you file once and forget the other country. For most income types — employment income, rental income, pensions — the treaty assigns primary taxing rights to one country and allows a credit in the other. What it does not do is automatically coordinate the filing. You still need to declare UK rental income on your Spanish Modelo 100, claim the foreign tax credit for UK tax already paid, and ensure the figures reconcile. Many Alicante residents with UK rental properties pay UK tax on that income through self-assessment and then fail to declare it in Spain at all, assuming the treaty has handled it. It has not. The Spanish declaration is still required (Source: Agencia Tributaria).

Underestimating the Modelo 720 as a bureaucratic formality

The Modelo 720 is a declaration of overseas assets — bank accounts, property, investments, life insurance — held outside Spain with a combined value above €50,000 per category (Source: Agencia Tributaria). Many UK nationals in Alicante have UK bank accounts, ISAs, and property that comfortably exceed these thresholds. The form itself carries no tax charge, but failure to file it, or filing it incorrectly, has historically attracted severe penalties. The penalty regime was partially reformed following a European Court of Justice ruling in 2022, but the obligation to file remains, and the consequences of non-compliance are still significant enough to treat this as a priority, not an afterthought.

Treating ISA income as invisible to the Spanish tax authorities

ISAs are a UK tax wrapper. Spain does not recognise them. Interest, dividends, and gains generated inside a UK ISA are fully taxable in Spain once you are a Spanish tax resident, and they must be declared on your Modelo 100 under the savings income tax rates — 19% on the first €6,000, rising to 28% above €300,000 in 2026 (Source: Agencia Tributaria). This surprises almost everyone. The ISA has been invisible to HMRC for years, so the assumption is that it is invisible everywhere. In Alicante, it is not.

What to actually do

Get your NIE and your asesor fiscal in the same month

The NIE — Número de Identificación de Extranjero — is the foundation of everything administrative in Alicante, including your tax registration. You cannot file a Spanish tax return, open a Spanish bank account, or register as a resident without one. The NIE application is handled at the Comisaría de Policía on Calle Médico Pascual Pérez in Alicante, and appointments fill quickly, so book as soon as you have a confirmed move date. Do not wait until you feel settled.

In the same month, find an asesor fiscal — a tax adviser — who works with British clients and understands both the UK self-assessment system and the Spanish Modelo 100. Alicante has several firms serving the expat community, particularly around the port and marina area, and personal recommendations from other UK residents are the most reliable filter. A good asesor will cost you a few hundred euros a year and will save you multiples of that in avoided errors and penalties.

Register on the Padrón and notify HMRC of your departure

Registering on the Padrón Municipal — the local population register at Alicante's Ayuntamiento — is a separate step from your NIE and from your tax registration, and it matters because it establishes your official date of Spanish residency. This date is what you use when notifying HMRC that you have left the UK, via form P85, which triggers a review of your UK tax status and may result in a refund of overpaid UK tax for the year of departure.

Do both of these things in your first three months. The Padrón registration also unlocks access to local services and is required for some visa renewals. Think of it as the administrative anchor that makes everything else easier to sequence correctly.

Frequently asked questions

When do I become a Spanish tax resident?

You become a Spanish tax resident in any calendar year in which you spend more than 183 days in Spain (Source: Agencia Tributaria). Alicante's climate means this threshold arrives faster than people expect — a move in early spring combined with a few summer trips back to the UK will still leave you well over the limit by December.

Spain also applies a secondary test: if your primary economic interests or your family's habitual residence is in Spain, you may be considered tax resident even without meeting the 183-day rule. For most UK nationals settling in Alicante with a partner or children, this secondary test is rarely the deciding factor, but it is worth knowing it exists.

The practical takeaway is to track your days from the moment you arrive, register on the Padrón promptly, and assume that your first full calendar year in Alicante will be your first year of Spanish tax residency.

What is the Beckham Law and do I qualify?

The Beckham Law — formally the Special Expatriate Tax Regime — allows qualifying individuals to pay a flat 24% rate on Spanish-source income up to €600,000, rather than the standard progressive rates that apply to ordinary residents (Source: Agencia Tributaria). It was reformed in 2023 to extend eligibility to remote workers and digital nomads, which makes it relevant to a significant portion of UK professionals relocating to Alicante on the Digital Nomad Visa.

To qualify, you must not have been a Spanish tax resident in the five years prior to your move, and you must be moving to Spain for work — either employed by a Spanish company, working remotely for a foreign employer, or running a business with clients outside Spain. The application must be filed within six months of registering with Spanish social security.

If you qualify, the regime lasts for six years and can represent a substantial tax saving for higher earners. An asesor fiscal in Alicante who works with expats will be able to assess your eligibility quickly — it is one of the first questions worth asking.

Do I still have to file a UK tax return if I live in Alicante?

Whether you need to file a UK self-assessment return after moving to Alicante depends on whether you have UK-source income — most commonly rental income from a UK property, a UK pension, or UK investment income (Source: HMRC). Simply leaving the UK does not cancel the obligation if the income source remains.

You should notify HMRC of your departure using form P85, which triggers a formal review of your UK tax residency status under the Statutory Residence Test. If you are confirmed as non-UK resident, your UK tax liability is limited to UK-source income only — but that income still needs to be declared.

For Alicante residents with a UK rental property, the most common outcome is continued UK self-assessment filing for the rental income, with a credit claimed in Spain for the UK tax paid. Your asesor fiscal and a UK accountant need to be coordinating, not working in isolation.

What is the Modelo 720 and who needs to file it?

The Modelo 720 is an annual declaration of overseas assets held outside Spain, required from any Spanish tax resident whose foreign assets exceed €50,000 in any of three categories: bank accounts, investments and securities, and real estate (Source: Agencia Tributaria). For UK nationals in Alicante with UK bank accounts, ISAs, pensions, or property, the threshold is crossed easily and often without realising it.

The form carries no direct tax charge — it is a disclosure requirement, not a tax payment. However, the penalties for non-filing or late filing have historically been severe, and while the European Court of Justice ruling in 2022 led to a partial reform of the penalty regime, the obligation itself remains fully in force.

File it in the first quarter of the year following your first year of Spanish tax residency. If you have a UK property, a UK pension pot, and a UK current account, you almost certainly need to file it. Ask your asesor fiscal in your first meeting — do not leave it until April.

How much income tax will I pay in Spain?

Spain's income tax combines a national rate and a regional rate set by the Valencian Community, which governs Alicante. The combined rates in 2026 run from 19% on the first €12,450 of taxable income to 47% on income above €300,000 (Source: Agencia Tributaria). The Valencian Community sits at the higher end of regional rates compared to Madrid, which has historically applied regional reductions.

Your effective rate will depend on your total worldwide income, the deductions you qualify for, and whether you are on the standard regime or the Beckham Law flat rate. The general personal allowance of €5,550 reduces your taxable base before rates are applied (Source: Agencia Tributaria).

For most UK professionals earning between €40,000 and €80,000 and living in Alicante, the effective combined rate typically lands in the 30–38% range after allowances — higher than many people expect when they hear Spain described as a low-tax destination. Model this before you move, not after your first bill arrives.

How do I find a good English-speaking tax adviser in Alicante?

Alicante has a well-established expat services sector, and English-speaking gestores and asesores fiscales are concentrated around the port, marina, and central districts. Personal recommendations from other UK residents are the most reliable filter — the expat community in Alicante is large enough that word travels quickly about who is competent and who is not.

Look specifically for an adviser who has experience with both the Spanish Modelo 100 and UK self-assessment, since your situation involves both systems. A gestor who only handles straightforward Spanish returns may not be equipped to navigate the UK–Spain double taxation treaty or the Modelo 720 correctly.

The British Chamber of Commerce in Spain maintains a directory of professional services, and several UK-facing law and accountancy firms operate from Alicante or serve the city remotely (Source: British Chamber of Commerce in Spain). Expect to pay in the range of a few hundred euros annually for a standard dual-filing service — it is one of the most cost-effective things you will spend money on in your first year.

Can I be taxed in both the UK and Spain simultaneously?

Technically, yes — both countries can assert a tax claim on the same income. In practice, the UK–Spain Double Taxation Convention prevents you from paying full tax twice on the same income by assigning primary taxing rights to one country and allowing a credit in the other (Source: HMRC). The treaty does not, however, eliminate the filing obligation in both countries.

The most common scenario for Alicante residents is UK rental income: the UK taxes it first under self-assessment, and Spain then requires it to be declared on the Modelo 100, with a credit for the UK tax already paid. The credit mechanism works, but it requires both returns to be filed correctly and the figures to reconcile.

Where dual taxation becomes genuinely complicated is with pensions, share options, and investment income — each of which has specific treaty provisions. This is precisely why an asesor fiscal who understands both systems is not optional but necessary.

What are the tax implications of renting out my UK property while living in Alicante?

UK rental income remains taxable in the UK regardless of where you live, and you will continue to file UK self-assessment returns to declare it (Source: HMRC). As a non-UK resident landlord, you fall under the Non-Resident Landlord Scheme, which means your letting agent or tenant may be required to withhold basic rate tax at source unless you have applied to HMRC to receive rent gross.

Once you are a Spanish tax resident in Alicante, that same rental income must also be declared on your Spanish Modelo 100. You claim a credit for the UK tax paid, which prevents double taxation — but the Spanish declaration is not optional, and the figures must match what you have reported to HMRC.

The practical implication is that you need a UK accountant handling your self-assessment and a Spanish asesor fiscal handling your Modelo 100, and they need to be working from the same income figures. Set this up before your first rental payment arrives, not after.