The Revenue Commissioner has said more than 1.52 million households have so far filed Property Tax returns.
In total, more than 1.69 million letters and emails were sent to liable home owners.
The Chairman of the Revenue Commissioners, Josephine Feehily, said the compliance rate is above 80%.
Ms Feehily said: "Because the Register was compiled from several databases we knew that some people would receive letters in error and we would be missing some properties.
"We issued LPT Returns, personalised letters and an LPT Guide in respect of just over 1.69 million residential properties either by post or by way of their Revenue Online Service (ROS) inbox.
She said the outcome of the "voluntary" phase of Property Tax has been "extremely successful".
She said: "I am pleased to be able to advise the Committee that LPT Returns have now been filed in respect of 1,517,902 properties.
"Next week, when the Department of Finance announces the end May Exchequer figures, I expect that it will include over €100m of this new tax, transferred by Revenue to the Exchequer.
"These numbers do not include about 160,000 residential properties where the local authorities or a social housing group is liable, and for whom special payment provisions were made in legislation. Including these we have voluntary compliance in respect of some 1.68 million properties."
She added it was a credit to the work of people in Revenue and to the taxpayers who responded.
She said: "They show once again that voluntary tax compliance is very high in this country."