The £1 Billion State Pension Boost: Are You One Of The 400,000 People Owed A Massive Back Payment?
The Department for Work and Pensions (DWP) is currently undertaking one of the largest financial correction exercises in recent history, a monumental effort to rectify systemic State Pension underpayments that could result in a significant financial boost for up to 400,000 pensioners across the UK. This massive undertaking, known as the Legal Entitlement and Administrative Practice (LEAP) exercise, has already paid out hundreds of millions of pounds in arrears, with the total bill for underpayments estimated to exceed £1 billion.
As of December 19, 2025, the DWP is accelerating its review process, with a particular focus on correcting errors related to the crucial Home Responsibilities Protection (HRP) scheme. This is a critical development for hundreds of thousands of parents and carers—predominantly women—who were historically denied the National Insurance (NI) credits they were due, leading to a much lower State Pension entitlement than they should have received. Understanding the categories of underpayment and the ongoing correction timeline is vital to ensure you or a loved one do not miss out on a potentially life-changing lump-sum payment.
The DWP State Pension Underpayment Scandal: A Breakdown of Errors and Affected Groups
The DWP’s correction effort stems from administrative errors, some dating back decades, which resulted in the incorrect calculation of State Pension for specific groups of beneficiaries. The National Audit Office (NAO) first brought the scale of the error to light, prompting the DWP to launch the LEAP exercise to systematically review millions of pension records. The 400,000 figure relates to the broad population being contacted or affected by the combined correction efforts, particularly the most recent focus on HRP errors.
The exercise is divided into three main categories of underpayment, with the most significant errors affecting women:
- Married Women and Civil Partners (Category BL): This group includes women whose husbands or civil partners reached State Pension age before March 17, 2008. Under the old rules, these women should have had their State Pension automatically uplifted to a minimum of 60% of their spouse's basic State Pension rate once their partner retired. The DWP’s failure to implement this automatic increase is one of the primary causes of the underpayments.
- Over 80s (Category D): Pensioners aged 80 or over who were receiving a low State Pension, or no State Pension at all, should have been automatically uplifted to a non-contributory Category D rate. Errors in applying this rule led to underpayments for this vulnerable group.
- Home Responsibilities Protection (HRP): This is the newest and potentially largest strand of the correction, and the one most closely tied to the 400,000 figure. HRP was a scheme that ran from April 1978 to April 2010 to protect the State Pension entitlement of parents and carers. If a person claimed Child Benefit during this period, they should have received NI credits to cover years spent out of the workforce. The DWP has admitted that a large number of these HRP periods were not correctly recorded on individuals' National Insurance records, severely impacting their final State Pension amount.
The DWP has confirmed that the correction work for the Married Women (Category BL) and Over 80s (Category D) groups is largely complete, with the focus now heavily shifted to tackling the complex HRP errors.
The Home Responsibilities Protection (HRP) Error: The Key to the 400,000 Boost
The HRP error is the most critical element of the current correction exercise and is the reason why a figure close to 400,000 people has been cited. In a major step to address this, HM Revenue and Customs (HMRC) began sending out letters to nearly 400,000 people who may have been affected by the missing HRP on their NI record. This is a proactive measure designed to reach those who may be owed thousands of pounds in back payments.
HRP provided a way for parents and carers to fill gaps in their National Insurance contributions, ensuring they could still qualify for the full basic State Pension. The DWP estimates that between £300 million and £1.5 billion may have been underpaid due to these HRP errors alone.
Latest Correction Figures and Arrears Paid (Up to March 2025)
The DWP regularly publishes its progress on the LEAP exercise. The latest figures show the substantial work being done, with a clear focus on the newer HRP cases:
- HRP Cases Reviewed: Between January 8, 2024, and March 31, 2025, the DWP identified 12,379 underpayments related to HRP.
- HRP Arrears Paid: Approximately £104 million in arrears was paid out to those affected by the HRP errors during that period.
- Total Underpayments Identified (All Categories): The total number of underpayments identified across all categories (Married Women, Over 80s, and HRP) is in the hundreds of thousands, with the average lump-sum payment often reaching thousands of pounds per person.
The correction process for HRP is complex because it requires cross-referencing DWP and HMRC records, which is why HMRC is sending out the initial letters. If you receive a letter from HMRC, it is essential to follow the instructions to get your NI record updated, which will then trigger a DWP review and recalculation of your State Pension.
Who is Eligible for the Pension Boost and How to Check
Eligibility for a back payment and a permanent boost to your weekly State Pension depends on falling into one of the categories affected by the DWP's administrative failures. While the DWP is proactively reviewing records, it is highly recommended that you check your own situation, especially if you fall into one of the following profiles:
You may be eligible if you are:
- A Married Woman/Civil Partner: Your State Pension is less than 60% of your husband's or partner's basic State Pension, and he reached State Pension age before April 6, 2016.
- A Widow or Widower: Your State Pension did not increase when your spouse died, or you believe it was not correctly calculated based on their contributions.
- A Pensioner Over 80: You are 80 or over and receive less than the Category D rate of State Pension (currently £101.55 per week).
- A Parent/Carer (HRP Error): You claimed Child Benefit between April 1978 and April 2010, and you are concerned that the corresponding Home Responsibilities Protection (HRP) credits are missing from your National Insurance record.
Actionable Steps to Secure Your Back Payment
The DWP has stressed that they are "determined" to rectify these underpayments, but the sheer volume of cases means the process is lengthy. If you believe you are owed money, you should take the following steps:
- Check Your NI Record for HRP: If you claimed Child Benefit between 1978 and 2010, check your National Insurance record online or request a State Pension forecast. If you see gaps that should be covered by HRP, or if you receive a letter from HMRC, contact HMRC immediately to have your record updated.
- Contact the DWP: If you are a married woman, widow, or over 80 and suspect an underpayment related to the Category BL or Category D errors, you can contact the DWP directly. The DWP encourages anyone who believes they may have been underpaid to get in touch.
- Seek Specialist Advice: Organisations like the National Audit Office (NAO) and pension specialists have been instrumental in highlighting these errors. Consulting an independent financial advisor or a free service like The Pensions Advisory Service (TPAS) can provide clarity on your entitlement.
The correction exercise is a necessary step to ensure financial justice for hundreds of thousands of pensioners who have been underpaid for years. The ongoing work to fix the HRP errors is expected to continue throughout 2025 and beyond, representing a crucial opportunity for many to secure a significant and well-deserved financial boost.
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