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We've fixed an issue affecting some customers filing provisional tax with the Accounting Income Method (AIM). Customers who paid their tax in full, and then later filed an IR4 for a square-up, were incorrectly charged late payment penalties and interest on terminal tax.

Terminal tax isn't due until 7 February, or 7 April for customers of agents with an extension of time. If you're an AIM customer and your penalties and interest are incorrect, contact us and we'll review your account and correct any errors caused by this issue.

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