People who have not yet paid or signed up to pay the Local Property Tax have until tomorrow to meet the Revenue's payment deadline.
Taxpayers who pay by monthly instalments do not have to take any action.
Revenue wrote to people who pay their property tax in one instalment in the autumn to remind them of tomorrow's deadline.
Those who give credit or debit card details to pay in one instalment have to pay by tomorrow.
Individuals who give their bank details by tomorrow will not see the money withdrawn from their account until 21 March.
Revenue said it had 25,000 calls to its property tax helpline.
It said if people make an effort to engage before tomorrow they will be deemed to be compliant.
