Argentina Tax on UK Pension Income: What British Retirees Should Know

Moving from the UK to Argentina can change which country may tax each part of your retirement income. The result depends on three separate questions: your residence under each country's domestic law, your treaty residence if both countries regard you as resident, and the legal classification of each payment. A UK State Pension does not follow the same treaty article as a workplace pension, while investment income and property income have their own rules.

The governing agreement is the 1996 UK-Argentina Double Taxation Convention. It entered into force on 1 August 1997 and generally took effect from 1 January 1998 in Argentina and from 6 April 1998 for UK Income Tax and Capital Gains Tax. The treaty allocates taxing rights and provides double-tax relief. Domestic law still determines residence, taxable amounts, allowances, filing obligations and administrative procedures unless the treaty restricts it.

Start with Argentine tax residence

Argentina's current tax authority is the Agencia de Recaudación y Control Aduanero, or ARCA. For a foreign national, ARCA's domestic residence guidance identifies two central routes: obtaining permanent residence in Argentina, or remaining in the country under temporary authorisations for a 12-month period. Temporary absences are addressed under the detailed domestic rules.

A DNI, local bank account or Argentine spouse should not be treated as a standalone statutory residence test. If UK and Argentine domestic law both classify you as resident, Article 4 of the treaty applies a sequence of tie-breakers: permanent home, centre of vital interests, habitual abode, nationality and, if necessary, agreement between the authorities. These treaty tests resolve dual residence for treaty purposes; they do not replace the domestic tests used to establish residence initially.

Argentina generally applies its income-tax regime to the worldwide income of a resident. That creates the domestic starting point for UK pension income, subject to the treaty allocation described below. Residence alone does not mean every person must submit every Argentine return. ARCA's Ganancias filing guidance requires a determinative return where the person is registered or the taxable conditions require an assessment, and explains that the informative Ganancias return was eliminated from fiscal year 2023.

Bienes Personales is a separate annual wealth-tax regime. Under ARCA's Bienes Personales return guidance, registration and filing depend on the applicable rules and asset threshold. For fiscal year 2025, the published threshold is ARS 384,728,044.57 at 31 December, together with the page's rules for assets that do or do not reach the threshold. Obtain current advice for the relevant fiscal year because thresholds, valuations and filing mechanics can change.

UK State Pension: Article 21 and foreign-tax credit

The UK State Pension is a National Insurance benefit. HMRC's treaty manual confirms that it is not regarded as a pension paid for services to the government. It therefore does not fall within the treaty's government-service pension provision. Article 18 is limited to pensions and similar remuneration paid in consideration of past employment, so the State Pension instead falls within the residual other-income treatment in Article 21.

For a State Pension arising in the UK and received by an Argentine resident, Article 21(5) permits the UK to tax the income. Argentine residence also brings the payment within Argentina's worldwide-income regime. Article 23(2) then requires Argentina to allow a deduction for UK Income Tax paid, capped by the Argentine tax attributable to that income. In practical terms, this is a foreign-tax credit mechanism rather than an exemption chosen between the two systems.

State Pension uprating is a separate social-security issue. Argentina is outside the countries where annual UK State Pension increases are normally paid, so the pension is generally frozen at the applicable rate after the move or claim. See UK State Pension from Argentina and the official GOV.UK overseas retirement guidance before budgeting.

Workplace and private employment pensions

Article 18 covers pensions and other similar remuneration paid in consideration of past employment, as well as annuities. When the recipient is treaty-resident in Argentina, those payments are taxable only in Argentina. This is an exclusive residence-state right. The UK must provide full treaty relief for a qualifying UK-source employment pension rather than retaining a primary taxing right and offering a credit for Argentine tax.

The classification of the payment remains important. A personal pension funded through employment or a workplace scheme will commonly fall within Article 18, but unusual arrangements may require analysis of the scheme and payment terms. The treaty's annuity definition also has specific conditions. State benefits, purchased investment products and payments connected with government service should not be grouped together without checking the relevant article.

To seek UK relief at source or repayment of UK Income Tax already deducted from a qualifying pension, use form DT-Individual. The form requires residence certification and gives HMRC the information needed to assess treaty eligibility. Relief is a claim process; it does not arise merely because an Argentine address has been supplied to a pension provider.

Pension lump sums

The Argentina treaty has no separate source-state exception for pension lump sums. Article 18 includes “other similar remuneration”, and HMRC's international manual on lump sums explains that under most treaties lump sums and recurring pension payments receive the same treatment where the pensions article is drafted this way. The official treaty digest also records that Argentina pension relief includes a trivial commutation lump sum.

A qualifying lump sum from a UK employment pension paid to an Argentina treaty resident therefore follows Article 18 and is taxable only in Argentina under the treaty. Argentine domestic tax rules determine its local taxable amount. A sum described as tax-free under UK pension legislation does not automatically receive an equivalent Argentine allowance. Take advice before crystallising benefits, especially where the payment includes several components or the move occurs close to the payment date. The broader planning issues are covered in Retiring to Argentina on a UK Pension.

Leaving the UK and making the correct claim

UK departure reporting depends on your filing position. GOV.UK's leaving-the-UK guidance says people who do not usually complete Self Assessment may use form P85 where its conditions apply. If you normally file Self Assessment, report the departure through the return and complete the SA109 residence pages. P85 itself does not establish non-residence; UK residence is determined under the Statutory Residence Test based on the facts for the tax year.

Self Assessment filers should also review HS304 when claiming non-resident and treaty-related relief. HMRC's online filing service does not support SA109, so suitable commercial software or a paper return may be required. DT-Individual serves a different purpose: it is the route for relief at source from UK Income Tax on qualifying income and for repayment claims. See HMRC Form P85 Explained and UK tax for expats in Argentina for the wider departure process.

Payments, currency conversion and records

The State Pension may be paid into a bank in Argentina or into a UK bank or building-society account. GOV.UK states that payment to an overseas account is usually converted into local currency and carries a 0.39% conversion charge. Payment to a sterling account avoids that overseas-payment conversion, after which any later transfer or exchange follows the provider's terms and applicable Argentine rules.

Keep pension statements, HMRC tax certificates, Argentine bank records, transfer confirmations, exchange documentation and evidence of fees. Argentine tax reporting can require foreign-currency amounts to be translated using the rate prescribed for the relevant tax and date. The amount credited by a payment provider may differ from the amount reportable under Argentine tax rules. Use lawful banking and exchange channels and ask an Argentine tax professional which official conversion basis applies to your return.

MLI effective dates

The OECD Multilateral Instrument modifies the treaty, principally through anti-abuse and procedural provisions. According to the official UK treaty-status page, the changes apply to withholding taxes from 1 January 2026 in both countries. For Argentina's other taxes, they apply from 1 January 2027. In the UK they apply from 1 April 2027 for Corporation Tax and from 6 April 2027 for Income Tax and Capital Gains Tax.

Not tax advice. Pension classification, treaty treatment and reporting depend on the scheme and the recipient's residence position. Obtain coordinated UK and Argentine advice before filing or taking a material withdrawal.

The core Article 18 allocation for qualifying pensions and annuities remains central. Complex trust structures, dual-residence cases, scheme reorganisations and payments with mixed legal character may engage other provisions. Before the first Argentine filing or a substantial pension withdrawal, obtain coordinated advice from UK and Argentine professionals using the treaty text, current domestic rules and the documents for the specific scheme.