The new Property Tax will be deducted from salaries, bank accounts or social welfare payments, if people do not pay, according to the Revenue Commissioners.
It is warning it has a range of legal powers to gather the charge in the event of non-compliance.
Up to 1.6 million households in the country are liable for the tax, and even people seeking a deferral must complete the forms.
A public information campaign on the new Property Tax will begin in March.
Letters outlining the Revenue's estimate of what is owed by liable households, and guidelines, will be dispatched before April.
If you do not receive a letter, the onus is on you to contact Revenue.
Everyone, even people seeking a deferral, must make a return by May 7 by post, or by May 28 if filing online.
Payments will start being processed from July 1.
Revenue Chairperson, Josephine Feehily, who appeared at the Oireachtas Public Accounts Committee today said the levy can be deducted from a person's salary, bank account or social welfare payments.
Ms Feehily said: "We will look to enforce it using a range of enforcement options available to us, which will include deduction in source from salary and all of the other enforcement options."
There will also be an interest charge of 4% for people who get a deferral, and 8% for people who do not pay the Property Tax.