CP05 and 4464C Letters in 2026 — Why the IRS Is Holding Your Refund and How Long the Review Really Takes
You check the mail expecting your refund status to improve, and instead find an IRS envelope with "CP05" printed across the top. Deep breath: a CP05 is one of the more benign letters the IRS sends. It means your refund is being held while the agency verifies your return —…
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