UK and US Pension Tax in Portugal 2026 Treaty Rules

If you live in Portugal and receive a UK or US pension, the first question is not simply “does Portugal tax pensions?” It is:

What type of pension is it, and which treaty article applies to that pension?

That decides whether Portugal taxes it, the UK or US keeps the taxing right, or both countries tax it with treaty relief preventing full double taxation.

The rules changed for UK pensions from 1 January 2026 because the new UK-Portugal Double Taxation Convention is now in force. The US-Portugal treaty is much older and is more complicated for US citizens because of its saving clause.

Quick Answer: The answer depends on the exact pension and treaty article. For a Portuguese tax resident, most UK private pensions and the UK State Pension are normally taxable in Portugal, while UK government-service pensions generally remain taxable in the UK. US pensions require extra care because the US treaty saving clause can preserve US tax for citizens and residents.

Pension income	Main 2026 treaty position for a Portugal tax resident
UK private/workplace pension	Normally taxable only in Portugal
UK SIPP drawdown	Normally taxable only in Portugal
UK State Pension	Normally taxable only in Portugal
UK government-service pension	Normally taxable in the UK under Article 18
UK NHS / teachers pension	Depends on whether the payment qualifies as government service
US private employment pension	Treaty says residence state, but US citizens/residents must also consider the US saving clause
US 401(k) / IRA distribution	Do not assume “Portugal only” for a US citizen; US filing and foreign-tax-credit coordination may still be needed
US Social Security	The treaty expressly allows the US to tax it; Portugal may also require reporting/tax, with double-tax relief applied under the treaty
US federal/state government-service pension	Article 21 has separate source-country rules and a nationality exception

If you are Portuguese tax resident, Autoridade Tributária generally requires you to report your worldwide income. Foreign pension income goes on Modelo 3, Anexo J, using the gross amount and showing foreign tax paid where applicable.

UK Pension Tax in Portugal 2026

The new UK-Portugal convention entered into force on 29 December 2025. For Portugal it applies from 1 January 2026. In the UK, the effective dates differ by tax: 1 January 2026 for taxes withheld at source and 6 April 2026 for Income Tax and Capital Gains Tax.

For pensions, Articles 17 and 18 do most of the work.

Is a UK private pension taxed in the UK or Portugal?

Article 17 says pensions and similar remuneration paid to a resident of one state are taxable only in that state, except where the government-service rule in Article 18 applies.

So if you are treaty-resident in Portugal, a normal UK:

• workplace pension;
• personal pension;
• defined-benefit pension;
• defined-contribution pension; or
• SIPP drawdown

is generally allocated to Portugal, not the UK.

The treaty rule does not automatically stop PAYE being deducted by a UK pension provider. If UK tax is still being withheld, you need to claim the treaty relief through HMRC.

Is a UK State Pension Taxed in Portugal or the UK?

For a Portuguese treaty resident, the UK State Pension is normally taxable in Portugal under Article 17. It is not automatically converted into a government-service pension merely because the payer is the UK state.

UK State Pension → Article 17 pension → normally Portugal

UK civil-service/military-style pension → Article 18 government service → normally UK

The UK State Pension itself is not normally a PAYE pension with tax directly deducted from the payment. Where someone also has a private or workplace pension, HMRC may collect tax attributable to the State Pension through the PAYE code on the other pension. That is another reason to get the treaty position corrected with HMRC after moving.

Is the UK’s 25% Tax-Free Pension Lump Sum Tax-Free in Portugal?

Do not assume so.

UK rules may let you take part of a qualifying pension as tax-free cash, but that treatment does not automatically carry into Portugal. Pension Wise warns that a UK tax-free lump sum can still be taxed where you live.

For a Portuguese tax resident, the Portuguese classification of the payment controls the local tax result. A large SIPP or defined-contribution withdrawal can therefore look very different before and after Portuguese tax residence begins.

I would not take a large lump sum after moving based only on the words “25% tax free” in UK guidance. Confirm the Portuguese treatment first.

Do You Need to Transfer a UK Pension to Portugal?

No. Moving to Portugal does not by itself require you to move the pension pot to a Portuguese or overseas pension scheme.

Where a pension payment is taxed depends on tax residence, the type of pension and the treaty—not simply the country where the pension account is held.

A transfer to a QROPS or another overseas arrangement is a separate financial decision. UK rules can impose an overseas transfer charge of 25% in some cases, subject to exemptions and an overseas transfer allowance.

Transfer UK pension to Portugal and how is my UK pension taxed in Portugal are therefore different questions. Portugal does not require a transfer simply for the treaty rules to apply.

UK Government Pension Tax in Portugal

Article 18 covers salaries and pensions paid by the UK, a political or administrative subdivision, or a local authority for services rendered to that government or authority.

Where Article 18 applies, the pension is normally taxable only in the UK.

Potential examples include qualifying:

• Civil Service pensions;
• Armed Forces pensions;
• police or fire-service pensions;
• local-authority pensions; and
• some public-sector teachers’ pensions.

But the name of the scheme is not enough. The underlying payer and the employment/service relationship matter.

Is an NHS or Teachers’ Pension Taxed in Portugal?

Do not classify an NHS or teachers pension from the scheme name alone.

Article 18 applies where the pension is paid by, or out of funds created by, the UK or a qualifying subdivision/local authority for services rendered to that government or authority. Some public-sector pensions fit that wording; others can require a closer look at the payer and employment history.

If the answer changes whether Portugal can tax a large pension, get the classification confirmed before filing rather than relying on a forum list of “government pensions.”

The nationality exception in Article 18

The old version of this article described this too broadly.

Under the 2025 convention, a UK government-service pension is normally taxable only in the UK. The special exception applies where the recipient is not a UK national but is a Portuguese national; in that situation, the pension may be taxed in both states.

That is not the same as saying every Portuguese national living in Portugal automatically loses the UK-only treatment.

If you hold both British and Portuguese nationality, do not apply the exception from a generic summary—read Article 18 against your exact nationality and pension facts.

How to Stop UK Tax Being Withheld on a Private Pension

For a UK pension that the treaty allocates to Portugal, HMRC’s DT-Individual form is used to apply for relief at source and/or reclaim UK Income Tax.

There is an important Portugal-specific detail that many guides get wrong:

Autoridade Tributária does not certify HMRC’s DT-Individual form.

HMRC’s own PAYE manual says Portuguese residents must instead provide a Portuguese Certificado de Residência Fiscal with the DT-Individual claim. HMRC validates that certificate online using its NIF and validation code.

For a Portugal claim, prepare:

1. completed DT-Individual;
2. Portuguese Certificado de Residência Fiscal;
3. pension/provider details requested by the form; and
4. any evidence HMRC asks for to process the relief or repayment.

If a provider has already deducted tax, DT-Individual can also be used for a repayment claim. HMRC also has the R43 route for certain non-resident personal-allowance and repayment claims, but do not assume R43 is automatically the correct form for every pension treaty case.

I would start with the treaty-relief route HMRC specifies for that pension rather than sending several refund forms at once.

How Portugal Taxes Foreign Pension Income

Portugal taxes residents on worldwide income. Pensions are Category H income.

For 2026, mainland Portuguese resident IRS rates are progressive, running up to 48%. Reaching a higher bracket does not mean the entire pension is taxed at that rate.

The bill depends on household taxable income, deductions, assessment method and any treaty relief or foreign-tax credit. Where Portugal has the taxing right, ordinary Portuguese rules apply unless you still have a valid grandfathered regime.

Does NHR still give a 10% pension rate?

Existing taxpayers who validly entered the old NHR regime and remain inside their 10-year entitlement can still have special treatment for qualifying foreign pension income.

That does not mean a new retiree arriving in 2026 can simply register for the old 10% NHR pension regime.

IFICI—the regime commonly called “NHR 2.0”—is aimed at qualifying professional activity and should not be treated as a replacement retirement-pension regime. For the current distinction, see Portugal NHR 2026 What Replaced It.

US Pension Tax in Portugal 2026

The US rules are less intuitive because the treaty’s saving clause can preserve US taxation for US citizens and certain US residents.

Article 20 of the US-Portugal treaty distinguishes:

• private employment pensions;
• Social Security and other public pensions; and
• government-service pensions under Article 21.

Are US private pensions taxed in Portugal?

Article 20(1)(a) says a pension derived by a resident of one state in consideration of past employment is taxable only in that state.

For a Portugal resident who is not still subject to the US saving-clause rules, that points to Portugal.

But a US citizen or certain US residents cannot stop there.

The treaty protocol says the United States may tax its citizens—and its treaty residents—as though the treaty had not come into effect, except for specified provisions. The private-pension rule in Article 20(1)(a) is not one of the listed saving-clause exceptions.

So for a US citizen living in Portugal:

Do not read “taxable only in Portugal” in Article 20(1)(a) as automatically eliminating US tax.

The US may still tax under domestic law. Article 25 then coordinates double-tax relief, commonly through foreign-tax-credit mechanics.

This point is much more useful than telling every US retiree that a 401(k) is simply “Portugal only.”

How are 401(k) and IRA withdrawals taxed in Portugal?

Portugal can treat distributions from foreign retirement arrangements as taxable pension income depending on the nature of the payment.

For a US citizen, you therefore have two layers:

1. Portuguese treatment of the withdrawal under Portuguese law and the treaty; and
2. US treatment under US domestic law, preserved where the saving clause applies.

For a US citizen, that can mean reporting the distribution on Form 1040 and coordinating the Portuguese tax through foreign-tax-credit rules.

A Roth account deserves individual advice before a large withdrawal. The fact that a Roth distribution may be tax-free under US domestic law does not by itself guarantee identical treatment in Portugal.

Are Roth IRA Withdrawals Tax-Free in Portugal?

Do not assume that a qualified Roth withdrawal that is tax-free in the US will also be tax-free in Portugal.

The US-Portugal treaty does not contain a Roth-specific rule. Portugal can classify the payment under its own tax rules, while the US tax result follows US Roth rules.

Before a large Roth conversion or withdrawal, get the Portuguese treatment confirmed for that transaction rather than assuming the US exemption follows the account across the border.

Does Portugal Tax US Social Security?

Article 20(1)(b) says US Social Security benefits and other US public pensions paid to a Portugal resident may be taxed in the United States.

The treaty’s saving-clause exception expressly preserves that Article 20(1)(b) treatment.

A Portuguese tax resident must also report worldwide foreign income in Portugal. If both countries tax the same benefit, the treaty’s relief article prevents full double taxation.

US Social Security can retain a US taxing right, while the Portuguese return may still need to include it and account for US tax paid.

The Portugal treaty wording matters here; rules copied from another country’s US treaty can produce the wrong answer.

For the separate payment, eligibility and practical side of US benefits while living in Portugal, see US Social Security Payments in Portugal.

How are US government pensions taxed?

Article 21 covers government service separately.

A pension paid by the US federal, state or local government for qualifying government service is generally taxable only in the United States.

There is an important exception: if the recipient is both resident and national of Portugal, Article 21 can shift the exclusive taxing right to Portugal.

Federal civilian, military, state and local-government pensions therefore should not automatically be grouped with a private 401(k) or IRA.

Do US Pension Treaty Claims Always Need Form 8833?

No.

IRS Publication 901 lists exceptions from Form 8833 disclosure for certain treaty positions involving pensions, annuities and Social Security. Other treaty-based positions—including some residence/tie-breaker claims—can still require disclosure.

Do not attach Form 8833 automatically just because you have a pension. Check whether the specific treaty position you are taking requires it.

For a US citizen or green-card holder with several retirement-income sources, use a preparer who works with the US-Portugal treaty rather than only domestic retirement returns.

How to Declare Foreign Pension Income on Anexo J

Autoridade Tributária says a Portuguese tax resident must declare income obtained both in Portugal and abroad.

For foreign income, include Anexo J with Modelo 3.

For pensions, AT’s guidance points to:

Anexo J → Quadro 5 – Rendimentos de pensões

Report:

• the gross foreign pension income;
• mandatory foreign social-security contributions if applicable; and
• foreign tax actually paid.

Foreign tax is relevant because Portugal can use it when calculating the international double-tax credit under the applicable rules.

Do not substitute the net bank deposit for the gross pension figure.

For the full return structure, see IRS Portugal for Foreigners.

UK Pension Already Taxed Before You Moved?

Do not assume tax withheld by the UK automatically becomes a Portuguese credit.

First ask why the UK taxed it.

If the treaty gives Portugal the exclusive taxing right, seek UK treaty relief/refund rather than automatically treating incorrect UK withholding as a Portuguese foreign-tax credit.

If the treaty allows both states to tax, the credit mechanism becomes much more relevant.

That difference—exclusive taxing right versus shared taxing right—is the core of double-taxation work.

Portugal Tax Residency Comes First

Before deciding where the pension is taxed, establish whether you are actually treaty-resident in Portugal for the period concerned.

Portugal generally treats residents as taxable on worldwide income, while non-residents are generally taxed only on Portuguese-source income.

The move year can be especially messy because:

• Portugal uses a calendar tax year;
• the UK tax year starts on 6 April;
• US taxpayers normally work on a calendar year; and
• treaty residence can differ from a simple mailing-address change.

I would not decide a pension’s treaty treatment from the date you received a residence card. Tax residence is a separate tax test.

If your move spans two countries’ residence rules, resolve the residence period before trying to allocate the pension.

UK vs US Pension Treaty Comparison

Question	UK pension	US pension
Private pension for Portugal resident	Normally Portugal only	Treaty points to Portugal, but saving clause may preserve US tax for US citizens/residents
State/Social Security	UK State Pension normally Portugal	US Social Security may be taxed in US; Portuguese reporting/tax may also apply
Government-service pension	Normally UK under Article 18	Normally US under Article 21
Relief from source-country withholding	DT-Individual / HMRC process	Depends on US domestic/treaty position
Main double-tax mechanism	Often remove incorrect UK withholding where Portugal has exclusive right	Frequently coordinated through foreign-tax-credit rules
UK/US tax-free wrapper automatically respected by Portugal?	No — UK tax-free cash does not automatically stay tax free	No — do not assume Roth treatment carries over
Portuguese filing	Modelo 3 + Anexo J	Modelo 3 + Anexo J

What I Would Check Before Filing

• Am I Portuguese tax resident for the period in question?
• Is this a private pension, State/Social Security benefit, or government-service pension?
• Which treaty article applies to this exact pension?
• Does that article give one country an exclusive right or allow both countries to tax?
• If I am taking UK pension tax-free cash, have I checked whether Portugal will tax it?
• If I am considering a UK pension transfer, have I separated the QROPS/transfer decision from the treaty-tax question?
• If UK income is allocated to Portugal, have I dealt with HMRC treaty relief and the Portuguese residence certificate?
• If I am a US citizen or resident, have I checked the saving clause and any Roth-specific Portuguese treatment before withdrawing?
• Have I checked whether Form 8833 is actually required?
• Am I reporting the gross foreign pension and foreign tax paid in Anexo J?
• If I still have NHR status, have I confirmed the remaining entitlement period?

For practical Portal das Finanças steps, see Portal das Finanças Guide. US taxpayers with wider foreign-account reporting obligations should also see FATCA and FBAR for US Citizens in Portugal.

The name on the pension statement does not decide the tax treatment. The treaty category does. Classify the pension first, then work out which country can tax it and whether you need relief, a credit or a repayment.