Almost 500 employers owed close to £1m in National Insurance for the last tax year.
That's according to the Treasury Minister in response to a written Tynwald question.
Figures show £958,382 of Class 1 NI was outstanding at the end of the 2022/23 year.
This is up from £386,136 in 2018/19 where just over 100 employers owed money.
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