Over the weekend the media reported that nearly six million people are to be told that they have paid the wrong amount of tax.
HMRC stated, at the time, that they will be demanding approximately £2BN back from certain taxpayers.
The story over the weekend was that £2BN has been underpaid through PAYE over the past two years, this negatively impacts 1.4 million taxpayers.
However, at the weekend it also appeared that approximately 4.3 million people had paid too much tax and will receive an average rebate of £418.
The errors were identified by the new computer system that found widespread underpayments by employers through the PAYE system.
However, since the story first broke there has been a revision in the number of taxpayers affected.
The Guardian now reports that over 10 million people may be in line for a tax rebate due to errors in HMRC's tax code system.
It seems that historic errors may have resulted in a further 5.8 million people (on top of the 4.3 million) overpaying income tax before March 2008.
HMRC seemingly has has 18.2 million "open" cases of incorrect tax payments pre-dating March 2008.
Tax does have to be taxing.
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