The relevant legislation
8Section 8 of the Land Tax Management Act 1956 provides:
"8 Date of ownership for purposes of land tax
Land tax shall be charged on land as owned at midnight on the thirty-first day of December immediately preceding the year for which the land tax is levied.
In this section year means the period of twelve months commencing on the first day of January."
9By s 9(1) land tax is payable by the owner of land on the taxable value of all of the land owned by that owner which is not exempt from taxation under the Act. Prior to 31 December 2003 s 10 of the Land Tax Management Act relevantly provided:
"10 Land exempted from tax
(1) Except where otherwise expressly provided in this Act the following lands shall, subject to sections 10AA, 10B, 10D, 10E, 10G and 10P, be exempted from taxation under this Act:
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(r) with respect to taxation leviable or payable in respect of the year commencing on 1 January 1998 or any succeeding year, land that has a land value in respect of the year of less than the premium tax threshold and that is used and occupied as the principal place of residence of the owner of the land (or, if there are joint owners, as the principal place of residence of one or more of them) and for no other purpose (except as provided by subparagraph (iii)), being:
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(ii) a parcel of residential land, or
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(1D) In paragraph (r) of subsection (1) residential land means land that is used and occupied for residential purposes and for no other purpose, that use and occupation being use and occupation of a building or buildings designed, constructed or adapted for residential purposes:
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10Section 10T provided:
"10T Concession for unoccupied land intended to be owner's principal place of residence
(1) If the Chief Commissioner is satisfied that the owner of land (or, if there are joint owners, any one or more of them) intends to use and occupy the land solely as his or her principal place of residence, that intended use and occupation of the land is to be regarded as its actual use and occupation for the purposes of section 10 (1) (r).
(2) This section does not apply unless:
(a) (Repealed)
...
(c) while the owner is the owner, the land is not used or occupied except as his or her principal place of residence.
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(3) A person is not entitled to have his or her intended use and occupation of land taken into account for land tax purposes if:
(a) the person or any joint owner of the land is entitled to have his or her actual use and occupation of other land taken into account under section 9C or 10 (1) (r), or
(b) the person has already received the exemption in respect of any other land in respect of a previous tax year, or
(c) the person or any joint owner of the land owns land outside New South Wales which is the principal place of residence of the person or joint owner.
(4) This section applies to a person's ownership of land only for the 2 tax years immediately following the tax year in which:
(a) the person became owner, or
(b) the person, whose land was eligible for an exemption from tax under section 10 (1) (r) in that tax year, ceased to be able to use and occupy the land as his or her principal place of residence because of damage to or destruction of the residence on the land by an event such as fire, earthquake, storm, accident or malicious damage,
unless the Chief Commissioner extends or further extends its operation in a particular case on the basis of an acceptable delay in that case.
(4A) This section does not apply in respect of land referred to in subsection (4) (b) unless the land concerned was the principal place of residence, for the purposes of section 10 (1) (r), of the person referred to in subsection (4) (b) immediately before the relevant damage or destruction occurred.
(5) An acceptable delay is a delay in the commencement or completion of the building or other work necessary to enable the intended use and occupation of the land to become its actual use and occupation that the Chief Commissioner is satisfied is due primarily to reasons beyond the control of the owner."
11Schedule 4 to the State Revenue Legislation Further Amendment Act 2003 commenced on 31 December 2003 (s 2(2)). By clause 5 of Schedule 4 para (r) of s 10(1) was omitted and the following paragraph inserted in its place:
"(r) land that is exempt from taxation under the principal place of residence exemption, as provided for by Schedule 1A."
12Schedule 1A of the Land Tax Management Act now contains the provisions concerning the "Principal place of residence exemption". Clause 6 of Schedule 1A provides:
"6 Concession for unoccupied land intended to be owner's principal place of residence
(1) An owner of unoccupied land is entitled to claim the land as his or her principal place of residence, if the owner intends to use and occupy the land solely as his or her principal place of residence. In such a case, the owner is taken, for the purpose of the principal place of residence exemption, to use and occupy the unoccupied land as his or her principal place of residence.
Note. It is an offence under section 55 of the Taxation Administration Act 1996 to make a statement to a tax officer, or give information to a tax officer, orally or in writing, knowing that it is false or misleading in a material particular.
(2) This clause does not apply unless:
(a) the land is unoccupied because the owner intends to carry out, or is carrying out, building or other works necessary to facilitate his or her intended use and occupation of the land as a principal place of residence, and
(b) if those building or other works have physically commenced on the land, no income has been derived from the use and occupation of the land since that commencement, and
(c) the intended use and occupation of the land is not unlawful.
(3) This clause applies in respect of the assessment of a person's ownership of land only in the period of:
(a) 4 tax years immediately following the year in which the person became owner of the land, or
(b) if the land is used and occupied for residential purposes by a person other than the owner at any time after the person became owner, 4 tax years immediately following the tax year in which the building or other works necessary to facilitate the owner's intended use and occupation of the land are physically commenced on the land.
(4) (Repealed)
(5) If the principal place of residence exemption applies by operation of this clause to land not actually used and occupied by a person as his or her principal place of residence on a taxing date, that exemption is revoked if the person fails to actually use and occupy the land as his or her principal place of residence by the end of the period in which this clause applies in respect of the assessment of the person's ownership of the land and to continue to so use and occupy the land for at least 6 months.
(6) The effect of the revocation is that the principal place of residence exemption is taken not to have applied to the land in respect of any tax year to which, but for the revocation, it would have applied. Land tax liability is to be assessed or reassessed accordingly.
(7) This clause does not apply in respect of land owned by a person if:
(a) the person or any member of the person's family (within the meaning of clause 12) is entitled to have his or her actual use and occupation of other land taken into account under section 9C or 9D or under this Schedule, or
(b) the person owns land outside New South Wales that is the principal place of residence of the person or a member of the person's family (within the meaning of clause 12), or
(c) the land, or the land if combined with any adjoining land of which the person is an owner, is capable of having more than 2 residences or residential units lawfully built on it.
(8) For the purposes of this clause:
unoccupied land means land that is not being used or occupied for any purpose."
13The plaintiffs concede that if Schedule 1A applies in respect of the 2004-2006 land tax years, then the principal place of residence exemption is inapplicable because the plaintiffs did not take up actual use and occupation of the land as their principal place of residence by the end of the period to which clause 6 applied in respect of an assessment of their ownership, let alone, continue to so use and occupy the land for at least six months.
14Liability to land tax is imposed by s 9(1) of the Land Tax Management Act itself. The liability of an owner of land to land tax does not depend upon the making of an assessment. Section 8(1) of the Taxation Administration Act provides:
"8 General power to make assessment
(1) The Chief Commissioner may make an assessment of the tax liability of a taxpayer."
15"Assessment" is defined in s 3 of the Taxation Administration Act as follows:
"assessment means an assessment made by the Chief Commissioner under Part 3 of the tax liability of a person under a taxation law, and includes:
(a) a reassessment and a compromise assessment under Part 3, and
(b) an assessment by the Supreme Court or the Civil and Administrative Tribunal on an application for a review."
16Section 9 relevantly provides:
"9 Reassessment
(1) The Chief Commissioner may make one or more reassessments of a tax liability of a taxpayer.
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(3) The Chief Commissioner cannot make a reassessment of a tax liability more than 5 years after the initial assessment of the liability, unless:
(a) the reassessment is to adjust tax to give effect to a decision on an objection or review as to the initial assessment, or
(b) at the time the initial assessment or a reassessment was made, all the facts and circumstances affecting the liability under the relevant taxation law of the person in respect of whom the assessment or reassessment was made were not fully and truly disclosed to the Chief Commissioner and, as a result, the tax liability was assessed at a lower amount than the Chief Commissioner would otherwise have assessed it, or
(c) the reassessment is authorised to be made more than 5 years after the initial assessment by another taxation law, or
(d) the reassessment is made as a consequence of an application by a taxpayer, being an application made within 5 years after the initial assessment of the liability, and the reassessment reduces the tax liability.
(4) The initial assessment of a tax liability remains the initial assessment of the liability for the purposes of this Act even if it is withdrawn under section 13."
17Sections 13, 14 and 16 provide:
"13 Withdrawal of assessment
The Chief Commissioner may withdraw an assessment (being an assessment for which a notice of assessment has been issued) at any time within 5 years after the date of issue of the notice, whether or not the amount of tax specified in the assessment has been paid.
14 Notice of assessment, reassessment or withdrawal of assessment
(1) The Chief Commissioner may issue a notice of assessment (showing the amount of the assessment).
(2) If the Chief Commissioner has not issued a notice of assessment of the tax liability of a taxpayer, the Chief Commissioner must issue the notice if a request to do so is made by the taxpayer within 5 years after the liability arose.
(3) If the Chief Commissioner makes a reassessment, the Chief Commissioner must issue a notice of assessment (showing the amount of the reassessment).
(4) If the Chief Commissioner withdraws an assessment, the Chief Commissioner must issue a notice of withdrawal of assessment.
(5) The notice is to be in a form approved by the Chief Commissioner.
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16 Validity of assessment
The validity of an assessment is not affected because a provision of a taxation law has not been complied with."
18Section 86 provides that a taxpayer who is dissatisfied with an assessment that is shown in a notice of assessment served on the taxpayer may lodge a written objection with the Chief Commissioner. The Chief Commissioner must consider the objection and either allow the objection in whole or in part or disallow it (s 91). Sections 96 and 97 provide that a taxpayer may apply either to the Civil and Administrative Tribunal (formerly the Administrative Decisions Tribunal) or the Supreme Court for a review of a decision of the Chief Commissioner that has been the subject of objection under Division 1 if the taxpayer is dissatisfied with the Chief Commissioner's determination of the taxpayer's objection or if 90 days have passed and the objection has not been determined. Section 100 relevantly provides:
"100 Provisions relating to applications for review
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(2) The applicant's and respondent's cases on an application for review are not limited to the grounds of the objection.
(3) The applicant has the onus of proving the applicant's case in an application for review.
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19Section 101(1) relevantly provides:
"101 Powers of court or tribunal on review
(1) The court or tribunal dealing with the application for review may do any one or more of the following:
(a) confirm or revoke the assessment or other decision to which the application relates,
(b) make an assessment or other decision in place of the assessment or other decision to which the application relates,
(c) make an order for payment to the Chief Commissioner of any amount of tax that is assessed as being payable but has not been paid,
(d) remit the matter to the Chief Commissioner for determination in accordance with its finding or decision,
(e) make any further order as to costs or otherwise as it thinks fit."
20No court or a tribunal or other body or person has jurisdiction or power to consider any question concerning an assessment or other decision of the Chief Commissioner under a taxation law except as provided in Part 10 of the Taxation Administration Act (s 103A).
21Section 119 provides:
"119 Evidence of assessment
Production of a notice of assessment, or of a document signed by the Chief Commissioner purporting to be a copy of a notice of assessment, is:
(a) conclusive evidence of the due making of the assessment, and
(b) conclusive evidence that the amount and all particulars of the assessment are correct, except in objection or review proceedings when it is prima facie evidence only."