Appeal form NOA1 (HMRC) Date published: 31 March 2025 Use form NOA1(HMRC) to appeal against a decision made by HMRC about your Tax Credits, Child Benefit or Guardian's Allowance. Documents HMRC decision appeal form NOA1 (HMRC) Adobe PDF (386 KB) Guidance notes appeal form NOA1(HMRC) Adobe PDF (232 KB) Help viewing documents Footer text Share this page Share on Facebook (external link opens in a new window / tab) Share on X (external link opens in a new window / tab) Share by email (external link opens in a new window / tab)