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Taking a lump sum or first drawdown payment from a pension is often the largest single financial transaction of a person's life. It is therefore particularly frustrating that HMRC's tax collection machinery routinely overtaxes these payments — sometimes by thousands of pounds — and leaves the pension holder waiting weeks or months for a refund.
This guide explains why emergency coding happens, how to calculate whether you have been overtaxed, and the precise steps to reclaim via the correct HMRC forms.
Why Are Pension Withdrawals Over-Taxed?
Under PAYE, income tax is deducted by the payer (in this case, the pension provider) based on a tax code held for the individual. The tax code tells the provider how much personal allowance to give and at what rate to deduct tax.
When you take your first pension payment from a new provider — or take a one-off lump sum — the provider often does not have a valid PAYE tax code for you. In these circumstances, they are legally required to apply an emergency tax code.
The emergency tax code operates on the Month 1 basis (also called week 1 / month 1 or "non-cumulative" basis). This is crucial to understand:
Month 1 basis assumes that your current payment is your regular monthly income, multiplied by 12 to calculate an annual equivalent, and then taxes it at the rates that would apply to that annualised income.
Example:
You take a one-off lump sum of £40,000 from your SIPP. The provider has no valid tax code.
Emergency tax calculation (Month 1 basis):
- Annualised equivalent: £40,000 × 12 = £480,000
- Tax at 20% on first £37,700 of taxable income (above personal allowance): £7,540
- Tax at 40% on next £87,270 (£50,270 − £12,570): £34,908
- Tax at 45% on excess above £125,140 up to £480,000: £159,678
- Total tax (annualised): £202,126
- Total tax deducted on £40,000 actual withdrawal: approximately £16,843
- Actual tax due (if this is your only income for the year with full personal allowance): £5,486
- Overcharge: approximately £11,357
This is not a hypothetical. People who take a significant first drawdown payment and have no active PAYE employment routinely find 40–45% of their withdrawal removed by the provider, when their actual rate should be 20% or less.
Who Is Affected?
Emergency coding applies most commonly in the following situations:
- First drawdown from a SIPP or workplace pension — no prior PAYE record with that provider
- Uncrystallised Fund Pension Lump Sum (UFPLS) — ad hoc withdrawals where no regular pension income is in payment
- Small pot lump sum — full encashment of pensions below £10,000
- Trivial commutation — total pension value below £30,000, taken as a lump sum
- Partial lump sum from an annuity — unusual but occurs in some contract structures
- Expats returning to the UK taking their first pension payment after a period of non-residency
People with ongoing pension income already in payment on a regular tax code are not affected by the Month 1 problem — their code is already established and the regular income is taxed correctly.
Which Form Do I Need? The Reclaim Route Explained
HMRC provides four forms for reclaiming emergency-coded overpayments. Selecting the right one matters — using the wrong form can delay your refund.
P55 — Partial Pension Withdrawal, More Expected
Use P55 if you have taken a flexible payment from your pension fund (e.g. a UFPLS or a drawdown payment) and:
- You have not taken your full pension pot as a lump sum, AND
- You do not expect to receive any other taxable pension income (state or private) in the same tax year
The P55 is available online (HMRC's Government Gateway portal) or as a paper form. HMRC aims to process P55 claims and issue refunds within 30 days, though in practice processing can take 4–8 weeks. The refund is paid directly to your bank account.
P53Z — Full Pension Fund Taken as Lump Sum, Still Working or Receiving Other Pension
Use P53Z if you have taken your entire pension pot as a lump sum and you:
- Have income from employment, self-employment, or other pensions in the same tax year, OR
- Expect to have such income before the end of the tax year
The P53Z triggers a full reconciliation of the year's income against the appropriate tax code, and HMRC refunds the difference.
P50Z — Full Pension Fund Taken as Lump Sum, No Other Taxable Income
Use P50Z if you have taken your entire pension pot as a lump sum and you:
- Have no other taxable income in the current tax year (no employment, no other pensions)
This is sometimes called "fully retired" status. The P50Z confirms you have no further expected income in the year, allowing HMRC to calculate the definitive refund.
Self-Assessment
If you complete a self-assessment tax return (for example, because you have rental income, foreign income, or self-employment), you do not need to use the above forms. The overpayment will be captured in your annual self-assessment calculation and offset against any balance due or refunded after 31 January. However, this means waiting potentially 9–18 months for the refund if the overtaxation occurred early in the tax year. Using the standalone forms (P55, P53Z, P50Z) is faster for most people.
What About the Following Tax Year?
If you do not reclaim in-year — perhaps because you were unaware of the process — HMRC will eventually reconcile the position in the following tax year through the PAYE annual reconciliation process (the P800 or Simple Assessment). HMRC issues a P800 to individuals who appear to have overpaid tax, showing the calculation and inviting a refund claim. This typically arrives between June and October following the tax year end.
The P800 route is slower and relies on HMRC having the correct information from the pension provider. If you do not receive a P800 but believe you are owed a refund, contact HMRC directly or complete the standalone forms.
Practical Example: UFPLS and P55 Reclaim
A 58-year-old self-employed photographer has no income in 2026/27 other than modest self-employment earnings of £8,000. She takes a £30,000 UFPLS from her SIPP in June 2026. The provider applies an emergency tax code.
Tax deducted:
- 25% of £30,000 = £7,500 tax-free element
- 75% of £30,000 = £22,500 taxable element
- Emergency tax (Month 1 applied to £22,500): approximately £6,800 deducted
Actual tax due on the £22,500, combined with £8,000 self-employment income (£30,500 total), after personal allowance of £12,570:
- Taxable income: £17,930
- Tax at 20%: £3,586
Refund due: approximately £3,214 — reclaimed via P55 in July 2026.
Emergency Coding on Regular Drawdown: Is It Still a Risk?
Once a regular pension income is established in payment and the provider holds a valid PAYE tax code from HMRC, subsequent regular payments are generally taxed correctly. The emergency code problem is primarily a first-payment issue.
However, problems can resurface when:
- The member changes pension provider (a transfer or an annuity purchased from a new insurer)
- Income levels change significantly in-year (large ad hoc UFPLS on top of regular income)
- The member's tax code changes and the provider does not receive the update promptly
If you receive an unexpectedly large tax deduction on a pension payment, do not assume it is correct. Check the deduction against your actual tax position for the year before the year ends.
HMRC Tax Code Notifications: Keeping the Situation Correct
Once you have your first pension payment in place, HMRC will eventually issue a proper PAYE tax code to the provider. To ensure this happens promptly:
- Register your pension income with HMRC as soon as it begins — you can do this via the Government Gateway
- If you have multiple income sources (employment, self-employment, multiple pensions), contact HMRC's PAYE helpline to ensure each income source is assigned the correct portion of your personal allowance
- Where a pension income and employment income coexist, ensure HMRC splits the code correctly between the employer and the pension provider
Incorrect tax code allocation between multiple income sources is common and results in either under- or over-payment of tax in-year.
Expat-Specific Issues: Non-Resident Pension Income
UK pension holders who live overseas and receive UK pension income face a different set of coding issues. Rather than PAYE emergency codes, the concern for non-residents is:
- Default basic-rate withholding: UK pension providers withhold income tax at basic rate (20%) unless the member holds a valid HMRC NT (No Tax) or reduced-rate code under a double taxation agreement
- DTA claims: to receive pension income without UK withholding (or at a reduced rate), non-residents must apply to HMRC using form DT Individual (or the relevant country-specific DTA claim form) to obtain an NT or low-rate code
- State Pension for non-residents: State Pension is generally paid without withholding to non-residents where a DTA applies, but the member must still file a UK self-assessment return if total UK income exceeds the personal allowance
For non-resident pension holders, the starting point is always the relevant DTA between the UK and the country of residence. See the separate Global Investments guide on double taxation and UK pension income.
Compliance Caveats
Tax codes, HMRC form references, and processing timescales are accurate as of 2026 but can change with each tax year and HMRC operational updates. Individual tax positions vary — the calculations in this guide are for illustration only. This guide does not constitute regulated tax or financial advice. If you have a complex tax situation involving pension income, self-employment, foreign income, or multiple employers or pensions, consider engaging a qualified tax adviser (chartered accountant or tax specialist) to ensure your position is correctly reported and any overpayments are reclaimed.
How Global Investments Can Help
Tax efficiency in the early stages of pension drawdown can make a significant difference to retirement income — particularly for those taking larger lump sums or structuring income across multiple pension pots. Global Investments works with clients at this transition point, co-ordinating between pension providers, tax advisers, and investment managers to ensure drawdown is implemented cleanly and efficiently from the outset. Contact our team to discuss your specific situation.
This guide is for general information only and does not constitute financial, legal or tax advice. Pension rules, tax rates and programme details change; verify current requirements with a qualified and FCA-regulated pensions adviser before acting. Pension transfers involving defined benefits over £30,000 require regulated advice.
