Tax, the NT Code, Voluntary National Insurance and Cross-Border Planning
By Jonathan Laws | Senior Adviser, Cameron James USA | Updated June 2026
If you are a US resident with years of National Insurance contributions behind you, you may be entitled to a UK State Pension that provides meaningful, inflation-linked income for life. For most people living in the United States, that pension arrives with a tangle of questions. Will it be taxed before it reaches you? Does it count as income in the US? How do you claim it? And what can you do if your qualifying years fall short of the threshold?
This guide answers each of those questions. It explains how the UK State Pension works, how to buy back missing years, how taxation works under the US-UK Double Taxation Agreement, how to secure an NT (No Tax) code so your pension is paid gross once payments have started, how the State Pension compares to US Social Security, and where both sit within a broader cross-border financial plan.
Key Takeaways
- • For US residents, the UK State Pension is taxable only in the US under Article 17(3) of the US-UK Double Taxation Agreement. It is not subject to UK income tax.
- • HMRC still applies a UK tax code by default. You must apply for an NT (No Tax) code, using Form US-Individual 2002 certified through IRS Form 8802, to have the pension paid gross.
- • You need at least 10 qualifying years for any State Pension and 35 for the full new rate of £241.30 per week in 2026/27.
- • You can often buy back missing years with voluntary Class 3 contributions, with a payback period of roughly two and a half years, subject to your forecast.
- • The State Pension is one piece of a wider cross-border plan, best coordinated with US Social Security and your US accounts.
How the UK State Pension Works
The UK State Pension is a government-paid income based on your National Insurance record. It is paid from the State Pension age, currently 66 for both men and women, rising to 67 in stages between 2026 and 2028.
The New State Pension
Anyone who reached State Pension age on or after 6 April 2016 falls under the new State Pension rules. The full new State Pension for 2026/27 is £241.30 per week (£12,547.60 per year). This represents a 4.8% rise from the 2025/26 rate of £230.25 per week, applied under the triple lock formula.
The triple lock guarantees that the State Pension rises each April by whichever is highest of earnings growth, CPI inflation, or 2.5%. That makes it one of the most reliably inflation-proofed income sources available, which matters considerably in a cross-border retirement plan.
Qualifying Years
Your entitlement is determined by your number of National Insurance qualifying years:
• 35 or more qualifying years: the full State Pension of £241.30 per week.
• 10 to 34 qualifying years: a pro-rata amount (divide your years by 35, then multiply by £241.30).
• Fewer than 10 qualifying years: no State Pension entitlement at all.
Each qualifying year is worth roughly one thirty-fifth of the full rate, approximately £6.89 per week (£359 per year) in additional lifetime income at today’s rate. For example, someone with 28 qualifying years would receive 28 ÷ 35 × £241.30 = £193.04 per week, or about £10,038 per year.
How to Check Your National Insurance Record
You can check your current record and obtain a State Pension forecast through the UK Government’s free online service at gov.uk/check-state-pension. You will need a Government Gateway account. The forecast shows exactly how many qualifying years you have, which years have gaps, and your projected weekly State Pension at claim date.
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Buying Back Missing Years: Voluntary National Insurance
If you have gaps in your record, you can fill some of them by making voluntary National Insurance contributions. This is one of the most financially compelling planning opportunities available to anyone with a National Insurance history.
The Maths
A single Class 3 qualifying year for 2025/26 costs £923 (£17.75 per week). In return, it adds approximately £359 per year to your State Pension for life. That is a payback period of around two and a half years. Across a 20-year retirement, a single year’s contribution of £923 returns over £7,100 in additional State Pension, subject to eligibility and to whether the year actually increases your forecast. The State Pension is also indexed under the triple lock, so this value tends to improve over time.
Current Contribution Rates
| Class | 2025/26 Weekly | 2025/26 Annual | 2026/27 Weekly | 2026/27 Annual |
| Class 3 (standard voluntary) | £17.75 | £923.00 | £18.40 | £956.80 |
Note: Class 2 contributions, which were available at a lower rate to people working abroad, have been withdrawn for periods abroad from 6 April 2026. Class 3 is now the primary voluntary route. From the same date, the eligibility test for paying Class 3 for periods abroad has also been tightened: new applicants generally need 10 years of continuous UK residence, or 10 qualifying years on the record, rather than the previous three-year test.
How Far Back Can You Go?
Under normal rules, you can fill gaps going back six tax years, with a deadline of 5 April each year. As of June 2026, you can fill gaps back to the 2020/21 tax year, with a deadline of 5 April 2027 for that year. An extended window covering 2006/07 to 2023/24 closed permanently on 5 April 2025.
| Important: you cannot increase your State Pension beyond the full rate, and not every gap year will increase your entitlement due to transitional rules. Always obtain a State Pension forecast and confirm the impact before making any payment. |
How to Pay
Contact HMRC on +44 300 200 3500 (from outside the UK) to confirm eligibility for each year and to obtain a payment reference. Payment can then be made by bank transfer, cheque, or direct debit. Full guidance is available at gov.uk/voluntary-national-insurance-contributions.
How the UK State Pension Is Taxed for US Residents
This is where the planning becomes critical. The US-UK Double Taxation Agreement determines which country holds primary taxing rights over different categories of income. Getting this wrong means either paying tax twice or, just as commonly, having tax deducted at source that you then have to reclaim.
What the US-UK Double Taxation Agreement Says: Article 17(3)
The agreement contains a specific provision for government social security payments. Under Article 17(3), payments made under the social security legislation of one country to a resident of the other are taxable only in the country of residence. Because the UK State Pension is paid under the UK social security system, a US resident receives it free of UK income tax.
This means the UK State Pension is:
• Not subject to UK income tax for US residents (under Article 17(3) of the agreement).
• Taxable as ordinary income in the US, reported on your Form 1040 as foreign pension income.
The same principle applies in reverse to US Social Security: each country gives up taxing rights over its own social security to the country where the recipient lives.
The Emergency Tax Problem
Even though the agreement exempts the UK State Pension from UK tax for US residents, HMRC applies a PAYE tax code by default. If you have not secured the correct code, your pension will be paid net of UK tax, requiring you to reclaim it. The NT code process, explained below, resolves this, but it can only be applied after payments have already begun.
JONATHAN LAWS | SENIOR ADVISER, CAMERON JAMES USA
“In my experience, the UK State Pension is one of the most overlooked assets a US resident holds. People assume it is lost, or that the paperwork is impossible, and they leave real, inflation-linked income on the table. It is rarely as complicated as it first appears. The two things that matter most are getting your National Insurance record right while you still can, and securing the NT code so the pension is paid without tax deducted at source. Get those two right and you have a reliable income for life. What I always tell clients is this: do not look at the State Pension in isolation. It works best when it is coordinated with your Social Security timing, your US accounts, and your wider plan. That is where the real value sits.”
Getting Your State Pension Paid Gross: the NT Code in Brief
An NT (No Tax) code is a tax code issued by HMRC that instructs the pension payer to make payments without deducting any UK income tax at source. It is available to non-UK residents entitled to claim relief under a Double Taxation Agreement.
It is not issued automatically. You must apply for it. Critically, HMRC requires that at least one payment has already been made from the pension before it can assign a tax code and process an NT application. That first payment establishes you on the scheme’s PAYE payroll, which is a prerequisite for HMRC systems.
Because the UK State Pension is paid by the DWP, it reaches you gross, with no tax deducted at source. That does not make it free of UK tax by default. HMRC can still raise a liability, and the mechanism that gives effect to the treaty exemption is the NT (No Tax) code. As with a private pension, HMRC can only attach the code once a payment has been made, so a first payment is typically taxed under an emergency code until the NT code is in place.
For US residents the route is Form US-Individual 2002, on which the State Pension is claimed in Part C.1, certified by the IRS through Form 8802 and forwarded by the IRS to HMRC. The full step-by-step, timelines and documents are set out in our full NT tax code guide for US residents.
UK State Pension vs US Social Security
For anyone with working histories in both countries, the UK State Pension and US Social Security are the two pillars of state retirement income. Understanding how they interact, and how each is taxed, is fundamental to cross-border planning.
| Feature | UK State Pension | US Social Security |
| Benefit level (2026) | £241.30/week (£12,548/year), full new rate | Average about $2,071/month; maximum at full retirement age about $4,152/month |
| Qualifying requirement (full) | 35 qualifying years | 40 credits (about 10 years of work) |
| Minimum to receive anything | 10 qualifying years | 40 credits |
| Indexing | Triple lock (earnings, CPI, 2.5%) | CPI (annual COLA) |
| Normal retirement age | 66 (rising to 67) | 67 (born 1960 or later) |
| Deferral uplift | About 1% per 9 weeks deferred | About 8% per year to age 70 |
| Earnings-related? | No (flat rate) | Yes (linked to lifetime earnings) |
| Tax for US residents | US only (Article 17(3)) | US only |
The Totalization Agreement
The US and UK have a Social Security Totalization Agreement, which prevents workers from paying into both systems simultaneously on the same earnings. It also allows periods of work in each country to be combined when determining eligibility for benefits, which is valuable for people with shorter contribution histories. More information: US-UK Totalization Agreement (SSA).
Fitting Both Into a Cross-Border Retirement Plan
The UK State Pension and US Social Security are two pieces of a larger picture. For most people with dual work histories, the complete plan involves aligning several income streams and navigating several regulatory regimes at once.
The Typical Building Blocks
A US resident with a UK working history typically holds some combination of:
• UK State Pension.
• A UK private or workplace pension, often held through an International SIPP, a defined benefit scheme, or a defined contribution scheme.
• US Social Security.
• US retirement accounts such as a 401(k), Traditional IRA, or Roth IRA.
• Non-registered savings held in either country.
Each carries its own tax treatment, its own US reporting obligations, and its own withdrawal sequencing considerations. For US residents, a QROPS is almost never appropriate, and a UK-regulated International SIPP is generally the suitable structure. You can read more on our UK pension transfer to USA page.
Why the Agreement Is Not a Simple Solution
A common misconception is that the US-UK Double Taxation Agreement eliminates tax on UK income for US residents. It does not. What it does is allocate taxing rights between the two countries and provide a framework for eliminating double taxation, primarily through the Foreign Tax Credit. For US citizens and permanent residents, the savings clause preserves the US right to tax its own citizens as if the treaty did not exist, except for specific carve-outs. The UK State Pension under Article 17(3) is one of those carve-outs, which is why it is genuinely taxed only in the US. For private UK pensions the position is more complex, particularly around lump sums and withdrawal sequencing.
Key Planning Considerations
Timing withdrawals across tax years. Because US retirement income is taxed in the year of receipt, the sequencing of UK pension drawdown alongside Social Security and US account withdrawals can materially affect your marginal rate.
Social Security timing. Deferring US Social Security to age 70 increases the monthly benefit by approximately 8% per year beyond full retirement age. The optimal strategy depends on your other income sources, including the UK State Pension start date.
State Pension deferral. The UK State Pension increases by approximately 1% for every 9 weeks of deferral, roughly 5.8% per year. Deferring for two to three years while other income covers expenses can meaningfully increase its lifetime value.
Currency risk. The UK State Pension is paid in sterling. For a US-resident retiree, movements in the pound against the dollar create genuine income volatility that should be addressed within broader portfolio construction.
US reporting obligations. The UK State Pension itself carries no FBAR or Form 3520 reporting obligation, as it is a government entitlement rather than a financial account. However, any private UK pensions or SIPPs may require FBAR reporting if the account balance exceeds $10,000 at any point during the year.
How Cameron James USA Can Help
Cameron James USA works exclusively with US residents and US-connected persons on cross-border financial planning. Our advisers hold individual SEC authorisation via Beacon Global Advisor Network LLC (CRD 288833) and are equipped to advise on the intersection of UK pension entitlements and US financial planning obligations.
We help clients with:
• State Pension strategy: establishing your National Insurance record, assessing the value of voluntary Class 3 contributions, and coordinating your claim date with your wider retirement income timeline.
• NT code applications: guiding you through the Form US-Individual 2002 and IRS Form 8802 process so your pension is paid gross as quickly as possible after payments begin.
• Private UK pension advice: drawdown sequencing, International SIPP structuring, QROPS suitability, and the tax treatment of your existing pension.
• Social Security coordination: integrating US Social Security timing with UK pension income to optimise your total retirement income across both countries.
• US tax-year planning: working alongside your US CPA so that UK pension income is reported and credited correctly on your Form 1040.
• Portfolio and currency planning: constructing and reviewing investment portfolios that account for your cross-border income exposure and currency risk.
What This Means for You
If you have spent part of your career in the UK, the State Pension is very likely worth claiming, and worth getting right. The two decisions that matter most are within your control. The first is your National Insurance record, because the window to buy back missing years does not stay open forever, and once a deadline passes that value is gone. The second is the NT code, because without it you will have UK tax deducted from a pension that, for you as a US resident, should be paid gross.
Your own position will depend on how many qualifying years you hold, when you plan to claim, and how the State Pension fits alongside your Social Security and US accounts. There is no single right answer that applies to everyone, which is exactly why a forecast and a coordinated plan matter. If you are unsure where you stand, it is worth reviewing your record and your options well before you reach State Pension age, so that nothing is left on the table.
Speak to a Cameron James adviser
Your National Insurance record and your NT code are time-sensitive. Missed deadlines cannot be recovered, and an unfiled NT code means UK tax is deducted from a pension that should reach you gross. A short conversation now can protect years of income later.
Frequently Asked Questions
Is the UK State Pension taxable in the US?
Yes. For a US resident, the UK State Pension is taxable only in the United States and is reported as ordinary foreign pension income on your Form 1040. It is exempt from UK income tax under Article 17(3) of the US-UK Double Taxation Agreement, which gives taxing rights over government social security to the country where the recipient lives.
Does the UK tax my State Pension if I live in the US?
Not once your paperwork is in place. The pension should be paid gross to a US resident, but HMRC applies a UK tax code by default, so tax can be deducted at first. You remove this by applying for an NT (No Tax) code. Until the NT code is active, any UK tax deducted can be reclaimed from HMRC.
What is an NT tax code and how do I get one?
An NT (No Tax) code instructs your pension payer to pay you without deducting any UK income tax. You apply using Form US-Individual 2002, which must be certified by the IRS through Form 8802. HMRC can only assign the code after your pension has made at least one payment, so the first payment usually comes through taxed under an emergency code.
How many National Insurance years do I need for a UK State Pension?
You need at least 10 qualifying years to receive anything, and 35 qualifying years for the full new State Pension. Between 10 and 34 years you receive a pro-rata amount, calculated as your number of years divided by 35, multiplied by the full weekly rate. With fewer than 10 years there is no entitlement at all.
Can I buy back missing National Insurance years while living in the US?
Often, yes, through voluntary Class 3 contributions. For 2026/27 a Class 3 year costs £18.40 per week (£956.80 per year) and adds roughly £359 per year to your pension for life. Class 2 contributions for periods abroad ended on 6 April 2026. Always check your forecast first, because transitional rules mean not every gap year increases your entitlement.
How much is the full UK State Pension in 2026/27?
The full new State Pension for 2026/27 is £241.30 per week, which is £12,547.60 per year. This is a 4.8% increase on the 2025/26 rate of £230.25 per week, applied under the triple lock. The triple lock raises the pension each April by the highest of earnings growth, CPI inflation, or 2.5%.
Can I receive both the UK State Pension and US Social Security?
Yes. The two systems are separate, and you can claim both if you qualify for each. A Totalization Agreement between the US and UK prevents double contributions on the same earnings and lets periods of work in each country be combined when testing eligibility. How and when you claim each one is an important part of cross-border retirement planning.
How long does the NT code take to process?
Typically 12 to 16 weeks from the point HMRC receives a correctly completed Form US-Individual 2002 and IRS Form 8802, although more complex cases can take up to six months. HMRC sends the code directly to your pension provider. Confirm it has been applied before making any further significant withdrawals.
Key Numbers and Links at a Glance
Key Numbers
| Item | Detail |
| Full State Pension 2026/27 | £241.30/week (£12,547.60/year) |
| Minimum qualifying years | 10 (for any entitlement) |
| Full rate qualifying years | 35 |
| Cost per voluntary year (Class 3, 2026/27) | £18.40/week, £956.80/year |
| Gain per voluntary year | About £359/year for life |
| Payback period per voluntary year | About two and a half years |
| NT code processing time | 12 to 16 weeks (up to 6 months) |
| UK tax on State Pension for US residents | None (Article 17(3)) |
| US tax on State Pension for US residents | Yes, as ordinary income on Form 1040 |
Essential Links
| Resource | Link |
| Check NI record and forecast | gov.uk/check-state-pension |
| Voluntary NI contributions guidance | gov.uk/voluntary-national-insurance-contributions |
| Form US-Individual 2002 (NT code) | Download from GOV.UK |
| IRS Form 8802 (US residency certification) | irs.gov/forms-pubs/about-form-8802 |
| Form P85 (leaving the UK) | Download from GOV.UK |
| US-UK Totalization Agreement | ssa.gov/international |
| Disclaimer This article is for general information purposes only and does not constitute personalised financial, tax, or legal advice. Cross-border taxation is complex and individual circumstances vary significantly. You should seek advice from a qualified cross-border financial adviser and a US-licensed CPA before making any decisions regarding your pension or US retirement planning. Cameron James USA does not provide tax advice. Cameron James USA advisers hold individual SEC authorisation via Beacon Global Advisor Network LLC (CRD 288833). Figures and rules referenced are current as of June 2026 and are subject to change. State Pension and National Insurance figures are drawn from official UK government sources, and Social Security figures from the US Social Security Administration. |
