HMRC system error puts more than 100,000 tax calculations under review
More than 100,000 taxpayers may have been charged too much tax because of an HMRC software fault that was first identified five years ago but has still not been fixed. HMRC is manually reviewing 107,000 tax calculations from the 2025-26 tax year after taxpayers complained that they had been overcharged. The problem is caused by a long-running fault in HMRC's computer system. In some cases, the sys
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