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Underpayment from previous years

Chun Kuen Leung
Posted Wed, 27 Sep 2023 10:01:52 GMT by Chun Kuen Leung
Hello, Recently I checked my personal tax account and I got a tax adjustment and saw an "underpayment in previous years" of £963 (which I owe HMRC). My income tax has been automatically deducted by PAYE when I pay out my income. Why do I still pay less tax? As a result, the personal tax exemption for this year has been reduced a lot. Where can I check?
HMRC Admin 25 Response
Posted Thu, 05 Oct 2023 10:29:41 GMT by HMRC Admin 25 Response
Hi Chun Kuen Leung,
You will  please need to contact HMRC to review the previous year underpayment.
Income Tax: general enquiries
Thank you. 
 

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