TL;DR - Last reviewed 17 June 2026
HMRC can and does apply incorrect tax codes to pension withdrawals, resulting in overpayments that must be actively reclaimed. The most common error is applying emergency tax rates to lump sum withdrawals. Reclaims are processed via specific HMRC forms and are typically settled within 30 working days.
KEY FACTS
- Emergency tax code BR or Month 1 basis is routinely applied to first pension withdrawals, often overtaxing by thousands of pounds.
- HMRC provides three specific forms for pension tax reclaims: P50Z, P53Z and P55.
- The Financial Ombudsman Service (FOS) can investigate complaints if HMRC does not resolve the error within a reasonable timeframe.
- Pension providers are required to deduct tax at source under PAYE rules, even if the wrong rate is applied.
- Overpaid tax can be reclaimed within four years of the end of the tax year in which it was paid.
Why Does HMRC Apply the Wrong Tax to Pension Withdrawals?
When a pension provider makes a payment that has not been previously reported to HMRC under PAYE, the system defaults to an emergency tax code. Emergency tax codes apply either a BR (basic rate only, no personal allowance) or a Month 1 basis, which treats the payment as if it is one twelfth of an annual income. For a lump sum withdrawal this can result in significant overtaxation.
HMRC does not automatically correct this in real time. The responsibility to reclaim sits with the taxpayer.
Which HMRC Form Do You Need?
HMRC provides three forms depending on the type of withdrawal made:
P50Z is for individuals who have taken all their pension pot as a lump sum, have no other income and will not be working or claiming benefits in the current tax year.
P53Z is for individuals who have flexibly accessed their entire pension pot as a lump sum and have other taxable income sources in the same tax year.
P55 is for individuals who have withdrawn only part of their pension pot using flexible access.
All three forms are available on gov.uk. HMRC aims to process reclaims within 30 working days of receiving a completed form.
Can You Wait for Self Assessment?
If you complete a Self Assessment tax return, any overpaid pension tax will be corrected automatically through the return process. However, this means waiting until after the end of the tax year and then further time for HMRC processing. Using the specific reclaim forms allows recovery during the same tax year without waiting for Self Assessment.
What If HMRC Does Not Pay Back?
If HMRC does not respond within the stated timescales, or if you believe the recalculation is still incorrect, you can raise a formal complaint with HMRC directly. If the complaint is not resolved satisfactorily, the Adjudicator's Office provides independent review of HMRC decisions. The Financial Ombudsman Service covers complaints about pension providers but not directly about HMRC tax administration.
Other Common Pension Tax Errors
Beyond emergency tax on withdrawals, HMRC pension tax errors also include incorrect calculation of the annual allowance charge where pension contributions exceed the annual limit, failure to apply the money purchase annual allowance (MPAA) correctly after flexible access, and errors in pension tax relief claimed through Relief at Source where the provider does not receive the basic rate top-up from HMRC.
Frequently Asked Questions
How long does HMRC take to refund pension tax?
HMRC states it aims to process P50Z, P53Z and P55 reclaim forms within 30 working days. Refunds are made by cheque or bank transfer depending on the information provided.
Can I reclaim pension tax from previous years?
Yes. Overpaid tax can be reclaimed within four years of the end of the relevant tax year. For tax year 2022-23 (ended 5 April 2023), the claim deadline is 5 April 2027.
Does the pension provider refund the tax or HMRC?
HMRC refunds the tax, not the pension provider. The provider deducts tax under PAYE and pays it to HMRC. The reclaim is made directly from HMRC using the appropriate form.
Disclaimer
This article is for informational purposes only and does not constitute tax or financial advice. Tax rules depend on individual circumstances and may change. Contact HMRC or a qualified tax adviser for advice specific to your situation. The Financial Ombudsman Service and Adjudicator's Office contact details are available on gov.uk.
Sources
- HMRC - Claim back tax on a flexibly accessed pension (gov.uk/claim-tax-refund/pension)
- HMRC - P50Z, P53Z and P55 forms (gov.uk)
- Financial Ombudsman Service - Pension complaints guidance (financial-ombudsman.org.uk)
- HM Treasury - Annual allowance and money purchase annual allowance rules
- Adjudicator's Office - HMRC complaints process (adjudicatorsoffice.gov.uk)
