HM Revenue and Customs (HMRC) is sending out 'brown envelopes' containing information about tax payments and refunds. The envelopes could potentially give recipients a cash boost of over £600. The letters will be sent out throughout the month. If recipients have overpaid their tax, they may be eligible for an automatic repayment, with the average payout for those who overpaid tax being £689. However, if recipients have underpaid their tax, they may be left with a bill of £783. It is important for recipients to keep both the brown envelope and the P60 from their employer to cross-reference the information and avoid discrepancies. Recipients should also verify the authenticity of any correspondence and directly contact HMRC if there are any suspicions of scams. [73edf62e]