HMRC Adjusts Tax Codes for State Pensioners Under New One-Week Rule
HM Revenue and Customs (HMRC) has issued an important update regarding its procedures for taxing state pensions from the Department for Work and Pensions (DWP). The tax authority can modify tax codes when individuals need to pay a different amount of tax, with changes in weekly state pension amounts cited as a key example.
Guidance on Tax Code Adjustments and Pensioner Responsibilities
An HMRC spokesperson explained that tax codes are adjusted based on information provided by the DWP to help pensioners pay the correct tax. The spokesperson advised, "Anyone who believes their tax code is incorrect can update their details through our app or via their online tax account. For those unable to access online services, our helpline is available for assistance."
This update coincides with the implementation of the Triple Lock, which will result in a £575 increase for state pensioners on the new, full state pension starting in April. HMRC stated that this calculation ensures most pensioners pay the appropriate amount of tax in real time.
Detailed Explanation of the One-Week Rule and Uprating Service
The guidance elaborates on the one-week rule, noting that there will be no benefit increase during the first week of April. Consequently, the Uprating Service calculates the coding deduction for the following year based on one week at the old rate and fifty-one weeks at the new rate.
DWP guidance further clarifies that state pension is typically paid on Mondays, except for widow beneficiaries who receive payments on Tuesdays. As a result, the Uprating Service determines the coding deduction according to the day on which April 6 falls each year.
When April 6 occurs on a weekday after Monday, such as Tuesday, Wednesday, Thursday, or Friday, pensioners will receive the new rate for only fifty-one weeks. In these instances, the coding deduction is calculated as one week at the old rate and fifty-one weeks at the new rate.
Conversely, when April 6 falls on a Saturday, Sunday, or Monday, the Uprating Service calculates the coding deduction as fifty-two times the new rate, ensuring full-year adjustments.
This systematic approach helps HMRC accurately compute tax codes, minimizing errors and ensuring pensioners are taxed correctly based on their updated state pension amounts.



