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Dave Hartnett has faced some criticism over the affair
Authorities "could have done better" to prepare people for demands of millions of pounds of back-tax, the UK's top taxman has told MPs.
Permanent Secretary for Tax Dave Hartnett made the admission to MPs on the Treasury Committee.
MPs were also told that HM Revenue and Customs has made a further concession over interest payments for those who owe more than £2,000.
More than two million people underpaid income tax in the last two tax years.
This was the result of errors in their Pay As You Earn (PAYE) tax code.
About 900,000 taxpayers will not have to pay anything after the government raised the write-off threshold from £50 to £300, leaving 1.4 million people owing about £2bn, or £1,428 each on average.
This article is from the BBC News website. ? British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

Dave Hartnett has faced some criticism over the affair Authorities "could have done better" to prepare people for demands of millions of pounds of back-tax, the UK's top taxman has told MPs.
Permanent Secretary for Tax Dave Hartnett made the admission to MPs on the Treasury Committee.
MPs were also told that HM Revenue and Customs has made a further concession over interest payments for those who owe more than £2,000.
More than two million people underpaid income tax in the last two tax years.
This was the result of errors in their Pay As You Earn (PAYE) tax code.
About 900,000 taxpayers will not have to pay anything after the government raised the write-off threshold from £50 to £300, leaving 1.4 million people owing about £2bn, or £1,428 each on average.
This article is from the BBC News website. ? British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

