Inheriting a US IRA /401(k) as a UK Resident: Tax Rules & Withdrawal Options (2026)

Inheriting a U.S. retirement account while living in the UK can feel overwhelming. When U.S. custodians send distribution paperwork, the most common instinct is to immediately cash out the entire account and transfer the funds to a UK bank account.

However, rushing to withdraw an inherited IRA is usually the most expensive choice you can make. While receiving an inheritance itself is not subject to UK Inheritance Tax (IHT), the moment you take money out of a U.S. Traditional IRA or 401(k), it becomes taxable income in both the U.S. and the UK. Withdrawing a lump sum all at once can push you into higher tax brackets on both sides of the Atlantic.

By taking time to understand the SECURE Act 10-year rule, U.S.-UK Tax Treaty reliefs, and strategic drawdown schedules, you can protect your inheritance from unnecessary taxation.

At a glance

Inheriting a US IRA or 401(k) in the UK: the numbers that matter

Seven figures that shape every decision a UK-resident beneficiary makes.

10 years

To empty the accountBy 31 December of the 10th year after the year of death (most non-spouse beneficiaries)

73 / 75

US RMD starting age75 if the owner was born in 1960 or later. Decides whether annual withdrawals apply to you

£0

UK Inheritance Tax on youThe UK does not charge IHT to the recipient of foreign assets. Income tax applies when you withdraw

30%

Typical US withholdingDeducted by the US custodian from distributions unless treaty relief is claimed

40%+

Combined tax we often seeOn a full cash-out taken in a single tax year

0%

Tax on a qualified RothTax-free in both the US and UK (Treaty Art. 17(1)(b))

9 months

Deadline to disclaimFrom the date of death, before you take possession of any assets

Distributions and inheriting money from a US Pension, whether that is a 401k or an IRA, is difficult. For UK residents, there are administrative challenges, getting advice on how to use the inheritance, taxation of distributions (in the US and UK) and the best method to use the funds wisely.

When a UK resident inherits a 401k or IRA (Individual Retirement Account) from a U.S. relative who is not married to them, they have several options for handling the funds. The choice depends on their financial goals, tax situation, and whether they prefer immediate access to the money or long-term investment growth.

What age did the US pension owner die?

Under the U.S. SECURE 2.0 Act, the starting age for Required Minimum Distributions (RMDs) is 73 (and scales to 75 for individuals born in 1960 or later). The rules for your inherited account depend heavily on whether the original account holder passed away before or after reaching their mandatory RMD age:

One of the first considerations for the beneficiary is the age of the person who died, as that impacts the options available to them. The US has rules that require after age 73, a minimum annual amount is paid from their pension. So, this age impacts on the options that the non-spousal benefit accesses.

Key Rules for Non-Spousal Beneficiaries

The withdrawal rules depend on whether the original IRA owner had started taking Required Minimum Distributions (RMDs) before they passed away:

  • If RMDs Had Already Started (Age 73+ at Death)
    • The beneficiary must continue taking RMDs based on their own life expectancy or the original owner’s schedule, whichever is longer.
    • The remaining balance must still be fully withdrawn within 10 years for most non-spousal beneficiaries.
    • This rule ensures that the U.S. government collects taxes on the account over time.
  • If RMDs Had Not Started (Under Age 73 at Death)
    • The beneficiary is not required to take annual RMDs but must withdraw the entire balance within 10 years.
    • There is flexibility in when to take distributions, allowing tax-efficient withdrawals.

Decision guide

Which withdrawal rule applies to you?

Two questions decide how much flexibility you have over the timing of withdrawals.

Question 1

Are you the surviving spouse or an Eligible Designated Beneficiary (EDB)?EDBs: the owner’s minor child, a disabled or chronically ill beneficiary, or someone no more than 10 years younger than the owner

Yes

Wider options

A spouse can roll the account into their own IRA; EDBs may be able to stretch withdrawals over their life expectancy. Take advice before choosing.

No: most children, siblings, nieces and nephews

The 10-year rule applies

Go to question 2 to see whether you also face annual minimum withdrawals.

Question 2

Had the owner reached their RMD starting age when they died?Age 73, or 75 for those born in 1960 or later

Yes: RMDs had started

Annual RMDs + 10-year deadline

  • Take a minimum withdrawal in years 1 to 9
  • Empty the account by the end of year 10
  • If the owner had not taken their RMD for the year of death, it must still be paid by 31 December of that year
Yr 1Yr 10: empty
No: died before RMD age

No annual minimum

  • Withdraw whatever you like, whenever you like
  • Empty the account by the end of year 10
  • Most room to plan withdrawals around your tax bands
Yr 1: flexibleYr 10: empty

Year 10 means 31 December of the tenth year after the year of death. A death in 2026 gives a final deadline of 31 December 2036.

Options for a UK Beneficiary of an Inherited U.S. IRA/401k

There are usually three options to consider for an Inhertied IRA. Often most people do not get these presented so its worth knowing them at the outset of the journey.

Your options

Three routes for an inherited US IRA or 401(k)

Cashing out is the instinct. It is rarely the cheapest choice.

1

Take a lump sum

Best for

  • Smaller balances
  • Older beneficiaries who need the money now
  • Those who want no ongoing admin

Upside

  • Immediate access
  • No 10% early-withdrawal penalty on inherited accounts

Watch out

  • Whole balance taxed as income in one year
  • Up to 30% US withholding
  • Can push you into 40% or 45% UK bands
Often best over $100k
2

Inherited (beneficiary) IRA

Best for

  • Larger balances
  • Working-age beneficiaries
  • Anyone wanting to control their tax bill

Upside

  • Stays invested and tax-deferred
  • Spread withdrawals across up to 10 tax years
  • Time bigger withdrawals for lower-income years

Watch out

  • Must be a trustee-to-trustee transfer
  • Needs a US ITIN (Form W-7)
3

Disclaim all or part

Best for

  • Passing the money directly to the next beneficiary, such as your children

Upside

  • Assets pass to the contingent beneficiary, or under the provider’s default rules

Watch out

  • Within 9 months of death
  • Before you take any assets
  • Irrevocable
Account title matters. The new account must read along the lines of “John Doe IRA (deceased) for the benefit of Jane Doe, beneficiary” to stay tax-deferred.
First step. Apply for an Individual Taxpayer Identification Number with IRS Form W-7 so the account can be opened and reported.

1. Take a Lump Sum Withdrawal

A UK beneficiary can choose to withdraw the entire IRA balance as a one-time lump sum. While this provides immediate access to the funds, it comes with significant tax implications. The full amount is subject to U.S. income tax at ordinary rates, with 30% withholding tax applied unless a tax treaty benefit is claimed. Additionally, the lump sum must be reported to HMRC in the UK, and UK tax may be due, though foreign tax credits can help reduce double taxation.

2. Open an Inherited IRA (Beneficiary IRA) in the U.S.

Instead of taking the money all at once, a UK beneficiary can transfer the funds into an Inherited IRA in their name. This allows them to keep the money invested and take distributions over time. Most non-spousal beneficiaries must withdraw the full balance within 10 years of the original owner’s death, but there are no required minimum withdrawals each year—meaning they can manage their tax liability by spreading withdrawals over time. The withdrawals remain taxable in the U.S. and must be reported in the UK, but proper tax planning can reduce the overall burden.

3. Take Distributions Over 10 Years

If the IRA is moved into an Inherited IRA, the beneficiary can withdraw gradually over a 10-year period. This strategy allows them to control how much tax they pay each year while keeping the remaining funds invested. By spreading withdrawals across multiple years, a UK beneficiary can potentially stay in a lower tax bracket, reducing their total tax liability in both the U.S. and UK.

Worked illustration

Same inheritance, very different tax bill

A UK resident earning £40,000 inherits a Traditional IRA worth about £150,000 (roughly $200,000). Extra UK income tax caused by the inheritance:

All in one tax year

£150,000 withdrawn at once

£66,217

44% of the inheritance

Total income that year£190,000
Personal allowanceLost entirely
Top rate reached45%

Spread over 10 years

£15,000 withdrawn each year

£39,460

26% of the inheritance (£3,946 a year)

Total income each year£55,000
Personal allowance£12,570 kept
Top rate reached40% on £4,730 only

£26,757

less UK tax, simply by spreading the same money across the 10-year window. Larger withdrawals can be timed for career breaks or retirement to save more.

Assumptions: England/Wales/NI 2026/27 bands (£12,570 personal allowance, 20% to £50,270, 40% to £125,140, 45% above; allowance tapered above £100,000), held flat for illustration. Investment growth and exchange-rate movements ignored. US tax withheld is credited against UK tax through Foreign Tax Credit Relief, so the overall bill broadly tracks the higher of the two countries’ rates.

4. Use a Trustee-to-Trustee Transfer

A trustee-to-trustee transfer can be arranged for beneficiaries who want to keep the IRA funds invested while deciding on a withdrawal strategy. The new IRA must be appropriately titled to indicate that it is an Inherited IRA (e.g., “John Doe IRA (deceased) for the benefit of Jane Doe, beneficiary”). This ensures that the account remains tax-deferred until withdrawals are taken.

5. U.S.-UK Tax Treaty & HMRC Rules on Lump Sums

There is taxation on USA-inherited IRA/401k withdrawals in the USA and in the UK. Under the U.S.-UK tax treaty, the U.S. has the primary right to tax IRA distributions, but the beneficiary must still report the income in the UK. In many cases, a foreign tax credit can be used to offset UK tax on the same income. However, proper tax reporting is crucial to ensure compliance with both U.S. and UK tax authorities. For inherited Roth Individual Retirement Accounts, payments to a UK resident are not taxable in the United States and not taxable in the United Kingdom.

Under Article 17 of the U.S.-UK Double Taxation Agreement, cross-border pension distributions are subject to specific tax rules. Beneficiaries must navigate how both tax authorities handle these payments:

  • HMRC Treatment of Lump Sums: In the past, there was a grey area that lump-sum payments from U.S. IRAs were exempt from UK tax under Article 17(2). However, HMRC applies the treaty’s “Savings Clause” (Article 1(4)), which reserves the right for the UK to tax its residents on foreign income. As a result, one-off or irregular lump-sum distributions from a U.S. IRA are taxable as foreign income in the UK.
  • Avoiding Double Taxation (Foreign Tax Credit Relief): When a U.S. custodian withholds up to 30% U.S. tax (Form 1042-S) on a distribution to a UK resident, you do not automatically lose that money. You can claim Foreign Tax Credit Relief (FTCR) on your UK Self Assessment tax return. This offsets the U.S. tax paid against your UK income tax liability on the same distribution, preventing double taxation up to your UK marginal tax rate.
  • Periodic Drawdowns vs. Lump Sums: Periodic payments spread over the 10-year window are generally taxed primarily by voluntarily paying the US taxes at source and then claiming foreign tax credits. Proper reporting ensures you avoid paying tax twice while making full use of your annual UK Personal Allowance (£12,570) and lower tax brackets each tax year.

US–UK Double Taxation Agreement

Taxed twice? How the credit works

HMRC taxes UK residents on IRA lump sums as foreign income, but US tax already paid is credited against the UK bill.

USA

Custodian withholds

Up to 30% is deducted at source and reported to you on Form 1042-S.

UK

Declare the gross

Report the full distribution, before US tax, as foreign income on your Self Assessment return.

UK

Claim the credit

Foreign Tax Credit Relief offsets the US tax, capped at the UK tax due on the same income.

Result

Pay the difference only

You pay UK top-up only where your UK rate is higher than the US tax already paid.

Higher-rate taxpayer · £10,000 withdrawal

US tax withheld (30%)£3,000
UK tax at 40%£4,000
Less Foreign Tax Credit−£3,000
Total tax paid£4,000 (40%)

Pays £1,000 UK top-up. No double tax.

Basic-rate taxpayer · £10,000 withdrawal

US tax withheld (30%)£3,000
UK tax at 20%£2,000
Less Foreign Tax Credit (capped)−£2,000
Total tax paid£3,000 (30%)

HMRC will not refund the extra £1,000. Treaty claims and US filing can reduce withholding, so plan this before you withdraw.

Edale · Illustrative guidance, not personal tax advice. Rules as at 2026/27.

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    Tax on USA-inherited 401k / IRA withdrawal / distribution

    Inherited IRA distributions are taxed as ordinary income is the primary rule. There are some exceptions to this headline. Generally, the distribution from an inherited IRA is added to your taxable income for that year. This means it is taxed at your current income tax rate. Under the UK-US Dual Taxation Agreement, there are exceptions to double taxation in the USA and the United Kingdom. Roth IRAs withdrawals are not taxed in the US or UK, because of clause 1b. Lump sums are taxed in the USA but not in the UK but are declarable.

    Traditional IRA vs. Roth IRA Inheritances: Critical Differences

    Not all inherited U.S. retirement accounts are created equal. The tax treatment depends entirely on whether the original account was funded with pre-tax or post-tax dollars.

    FeatureInherited Traditional IRA / 401(k)Inherited Roth IRA
    Tax Status of WithdrawalsTaxable Income in both U.S. and UK.100% Tax-Free in U.S. and UK (if qualified).
    UK Self Assessment ImpactAdded to your taxable UK income; can push you into higher tax bands.Excluded from UK income tax under Article 17(1)(b) of the Tax Treaty.
    Withdrawal StrategySpread withdrawals over 10 years to stay in lower tax brackets.Keep invested as long as possible (up to year 10) for maximum tax-free growth.

    Know what you’ve inherited

    Traditional vs Roth: why the account type changes everything

    Pre-tax money is taxed when it comes out. Post-tax Roth money, if qualified, is not.

    Traditional IRA / 401(k)
    Roth IRA
    Tax on withdrawals
    Taxable
    Income in both the US and UK
    Tax-free
    In both the US and UK, if qualified
    UK Self Assessment
    Added to your UK income; can push you into a higher band
    Excluded from UK income tax under Treaty Art. 17(1)(b)
    10-year rule
    Applies
    Applies (no annual RMDs, as the Roth owner had none)
    Strategy
    Spread withdrawals across the 10 years to stay in lower bands
    Wait. Let it grow tax-free and withdraw near the year-10 deadline
    Inherited both? A typical order:Traditional: draw steadily→Roth: touch last

    Key Rule for Roth IRAs: Because qualified Roth IRA distributions pass to UK residents tax-free in both jurisdictions, an inherited Roth IRA is usually the last asset you should touch. Let the funds compound inside the account tax-free until the 10-year deadline requires full withdrawal.

    Choosing the Best Option for UK beneficiary of US pension inheritance

    The best option for a UK beneficiary depends on their age, financial needs, and tax situation. A lump sum might be suitable for elderly beneficiaries who need immediate access to funds, while younger beneficiaries may benefit from keeping the IRA invested and spreading withdrawals over time.

    Edale can provide guidance on inherited IRAs, tax planning, and managing distributions to optimise financial outcomes.

    Real world cases of US 401k/ IRA inheritance for different beneficiaries

    Practical illustrations can often make the rules around inheriting US pensions more relatable. Below are some cases we have received with some details changed to respect individual circumstances and personal situations.

    Case studies

    Three beneficiaries, three different answers

    Based on real Edale cases, with details changed. Age and income drive the choice as much as the balance.

    M

    Margaret, 76

    Retired, comfortable pension

    $50,000

    Traditional IRA from her brother, aged 80

    Chose: lump sum

    • No need for long-term growth
    • Manageable within one tax year
    • No early-withdrawal penalty
    S

    Sarah, 55 & her mother, 78

    Shared inheritance from an uncle

    $300,000

    401(k) split equally, $150,000 each

    Mother: lump sumSimpler; funds care needs now
    Sarah: inherited IRAWithdraws over 3 years
    • Mother claims foreign tax credits
    • Sarah avoids a one-year tax hit
    • Sarah’s withdrawals help fund her mother’s care
    J

    James, 35

    Higher earner, mid-career

    $200,000

    401(k) from his father, a US expat in the UK

    Chose: inherited IRA over 10 years

    • Smaller withdrawals while earning
    • Balance stays invested
    • Larger withdrawals saved for a career break

    Margaret, a 76-year-old retiree in the UK, inherits a $50,000 Traditional IRA from her late brother, John, who lived in the U.S. John was 80 years old and had been taking Required Minimum Distributions (RMDs). Given that Margaret was already retired has a comfortable pension, and does not want to deal with ongoing investment management. She prefers simplicity over long-term tax planning. A Lump Sum Withdrawal was the best method for her. The rationale for this approach are:
    ✅ She doesn’t need long-term investment growth at her age.
    ✅ The amount is manageable in one tax year, avoiding complex future withdrawals.
    ✅ She won’t face early withdrawal penalties, as inherited IRAs allow penalty-free distributions.

    Sarah, a 55-year-old UK resident, and her 78-year-old mother, Margaret, inherit a $300,000 401(k) pension from Sarah’s late uncle, who was a U.S. resident. The 401(k) was left equally to both Sarah and Margaret, meaning each receives $150,000. At 78 years old, Margaret finds the paperwork and client due diligence process too complex for an Inherited IRA transfer. Given her age and financial needs, she opts for a direct lump sum withdrawal of her $150,000 share. It is simpler and provides her with immediate access to funds for her care needs. With guidance, she can apply for foreign tax credits in the UK to offset some of the U.S. taxes paid.Since Sarah is still working but planning for retirement, she decides to transfer her $150,000 into an Inherited IRA. This allows her to:
    ✅ Keep the funds invested while spreading withdrawals over time.
    ✅ Avoid a lump sum tax hit in the U.S. and UK.
    ✅ Withdraw over three years to help cover her mother’s increasing care costs while minimizing tax liabilities.

    James, a 35-year-old UK resident, inherits a $200,000 401(k) pension from his late father, who was an American expat in the UK. As a non-spouse beneficiary, James must decide how to manage the inheritance while considering his career, tax implications, and long-term financial goals. Since James is in a higher earning phase of his career, he decides to transfer the funds into an Inherited IRA and spread withdrawals over 10 years to:
    ✅ Reduce tax liability by withdrawing smaller amounts while working.
    ✅ Keep money invested for potential growth.
    ✅ Time withdrawals strategically—opting for larger withdrawals if he takes a career break or earns less in future years.

    Our Happy Clients

    What can I do with the Inherited IRA?

    Depending upon your particular circumstances (and the terms inherited account), you may have the following options available with respect to the assets in your workplace retirement plan account:

    • Take all the money as a distribution: The inherited IRA assets can be distributed to a non-spouse beneficiary immediately. The assets, once distributed to the beneficiary, are treated as that beneficiary’s own and may be used or invested at the beneficiary’s discretion. Beneficiaries can then use the inherited IRA money on whatever they like - but taxes are payable on the gross value. Beneficiaries who receive distributed assets will need to pay ordinary income taxes and likely face a 30% withholding tax applied by the provider. Depending on the value of the IRA assets, the amount of income taxes owed on an immediate distribution in full could be considerable - we frequently see this as 40%+. A beneficiary who is under the age of 59½ will not be subject to the 10% penalty for early withdrawal with respect to the distribution of assets. An immediate distribution of the full inherited IRA is most advantageous for a beneficiary requiring instant access to all the funds.
    • Transfer the assets into a non-spouse inherited IRA and take RMDs: A non-spouse beneficiary may alternatively transfer the IRA assets into an inherited IRA, also called a beneficiary distribution account. The beneficiary must ensure they perform a trustee-to-trustee transfer to properly move assets to an inherited IRA. Required minimum distributions from inherited IRA accounts usually start one year after the original account holder passes away. There could be a year of death RMD, which is required to be paid from funds before the 30 December in the year in which the owner died.
    • Disclaim all or part of the assets: A non-spouse beneficiary may also opt to disclaim all or part of the IRA assets by executing a disclaimer. Upon execution of a disclaimer, the IRA assets will either go to any contingent beneficiaries identified in the beneficiary designation or they will follow the IRA provider’s contractual default rules when no contingent beneficiaries are named. The disclaimer of IRA assets is an irrevocable decision made by the beneficiary. The disclaimer must be made within nine months of the original IRA owner’s death and prior to the beneficiary taking possession of the assets. Prior to making the decision to disclaim, a beneficiary should consult with tax and estate planning professionals and consider the potential benefits and ramifications of such a decision.

    What should I do with the inhertied IRA?

    For most beneficiaries, moving a US Pension into an Inherited IRA in best option is most cases when the value is over USD100,000 rather than taking a full distribution. A full cash-out triggers US and UK income tax on the entire balance, which can be costly and unnecessary. By taking an inherited IRA, you continue to benefit from tax-deferred growth while taking distributions over the permitted period — giving more control over timing and tax impact. In some situations, such as when you want the inheritance to pass directly to another eligible person, you may choose to disclaim the IRA so it can transfer to another beneficiary.

    Edale helps assess these choices, ensuring you follow IRS and UK rules correctly while keeping flexibility for your long-term financial goals.

    What should I do to examine my options with the inherited IRA?

    Edale can advise you on your options if you have inherited an IRA. The first step is to contact Edale to discuss opening the inherited IRA in your name and structuring it for tax purposes in both the US and the UK. You will also need to apply for a US Individual Taxpayer Identification Number (ITIN) by submitting IRS Form W-7 in order to report and manage the account. Edale will supply the full instructions for completing the W-7 form and any supporting documents required for this process. Edale will also guide you through the process of setting up the account correctly from the outset in order that your inherited IRA can be managed going forward, distributions are taken efficiently and taxes settled easily.

    Frequently Asked Questions

    Do I pay UK Inheritance Tax (IHT) on a U.S. IRA?

    Generally, no. The UK does not levy inheritance tax on the recipient of foreign assets. U.S. Estate Tax is managed at the estate level before distribution and typically only applies to estates exceeding high U.S. exemption thresholds. However, income tax applies when you draw down the funds.

    What is the 10-year rule for an inherited U.S. IRA?

    Following the U.S. SECURE Act, most non-spouse beneficiaries who inherit an IRA or 401(k) must fully distribute all funds from the account by December 31st of the 10th year following the year of the owner's death.

    Are inherited Roth IRA withdrawals taxable in the UK?

    Under Article 17(1)(b) of the U.S.-UK Tax Treaty, qualified distributions from a Roth IRA remain tax-free in the UK, provided they would have been tax-free under U.S. rules.

    How do I avoid double taxation on an inherited U.S. pension?

    You can claim Foreign Tax Credit Relief (FTCR) on your UK Self Assessment tax return. This allows you to credit the U.S. tax withheld by the U.S. custodian against your UK tax liability on the same income.

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