12 People have appeared in Douglas Courthouse after failing to pay their tax returns on time.
Over £10,000 of fines were handed out to the defendants.
Defendants were ordered to pay a fine of up to £1,000 plus court costs.
The Treasury say the penalty can be up to £5,000 and prosecution could be imposed.
Crogga still owes the Isle of Man Government money
DoI says works at Liverpool ferry terminal will take longer
Over 50 employment tribunals outstanding at the DoI
Free period products bill raises cost concerns for MHKs
Key road in Ramsey to re-open early this afternoon
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Appeal launched after fly-tipper filmed dumping rubbish
Prepare your pets for Bonfire Night, says Manx charity