HMRC is advising a large number of individuals to be vigilant for an important tax notification during the summer months. If you are under PAYE and have either overpaid or underpaid taxes for the 2025/26 tax year, you will be receiving a P800 letter by mail.
Various factors can lead to inaccuracies in your tax bill, such as being on an incorrect tax code, recent job changes, or commencing pension claims. Each year following the tax year conclusion, HMRC reviews its PAYE records to ensure accurate payment of Income Tax on earnings or pensions.
P800 letters will be distributed in stages until March 2027, detailing how to claim a refund if you have overpaid taxes. Refunds can typically be claimed online, or you can opt to receive a refund check by mail.
The common tax code, 1257L, applies to individuals with a single job or pension, but not everyone falls under this category. To ascertain your tax code, refer to your most recent payslip or P45 if you have recently left a job.
In cases of underpaid taxes, the owed amount must be repaid to HMRC. It is advisable to address this promptly to avoid accumulating a larger debt.
Marc Gill, Director of Personal Tax Operations, emphasized the importance of prompt tax refunds for those who have overpaid. If you receive a P800 letter, follow the instructions provided to claim your refund through GOV.UK or the HMRC app, a quick and simple process.