The deadline for homeowners to file their Local Property Tax returns has been extended until 5pm on Wednesday.
The decision comes as large numbers of people continue to seek further clarity about the self-assessment valuation process for their property tax ahead of the original deadline of this Sunday.
Revenue said so far more than a million of the expected 1.8m returns have been received, adding that it has received 250,000 of those over the past three days alone.
However, many people appear to remain unclear about how to complete and submit the self-assessment valuation process for their property.
In the last three days alone, 80,000 calls were made to Revenue's local property tax helpline and 15,000 items of correspondence were received by it on the issue.
Revenue said it expects this high level of engagement to continue to increase further in the coming days as property owners make every effort to comply with their obligations.
"LPT requires property owners to submit a return to Revenue and we are very conscious that this can cause a degree of worry and stress for property owners who do not have a reason to engage directly with Revenue on an ongoing basis," it said in a statement.
"Revenue is also very conscious that this is the first revaluation for LPT since it was first introduced over 8 years ago."
As a result, the tax collector has decided to extend the filing deadline to 5pm next Wednesday November 10th.
It also said that property owners who have submitted a written query via its website or by post about their 2022 property tax obligations in advance of the filing date, will be treated as having complied with their requirements on time, provided they file their return promptly as soon as their query is resolved.
The new valuation will determine the amount of property tax a property owner will pay for 2022 and for the three years from 2023 to 2025.
In particular, some property owners appear to be concerned about what will happen if the valuation submitted is not accurate.
Revenue said the quickest and easiest way for property owners to submit their return is online via myAccount, ROS or the local property tax online portal.
Its LPT helpline is also to operate extended opening hours in the days leading up to the extended deadline. It can be contacted at 01-7383626.
Letters sent to 1.4 million homeowners in the past few weeks from Revenue give them an estimated property tax liability but owners have been told to check the valuation and tell the tax authority what they think their property is worth.
Homeowners who deliberately undervalue their homes for the property tax have been warned that Revenue will force them opt for a higher valuation.
