Income Tax (Individuals) Act 1978

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INCOME TAX (INDIVIDUALS) ACT 1978

No. 125 of 1978

An Act to impose a tax upon incomes, other than incomes of companies and of superannuation funds.

BE IT ENACTED by the Queen, and the Senate and House of Representatives of the Commonwealth of Australia, as follows:

Short title

1. This Act may be cited as the Income Tax (Individuals) Act 1978.

Commencement

2. This Act shall come into operation on the day on which it receives the Royal Assent.

Interpretation

3. (1) In this Act, unless the contrary intention appears

Assessment Act means the Income Tax Assessment Act 1936;

superannuation fund means a provident, benefit, superannuation or retirement fund;

tax means income tax referred to in sub-section 5(1).

 

(2) In this Act, a reference to net income or taxable income shall be read as a reference to net income or taxable income, as the case may be, of the year of income.

Incorporation

4. The Assessment Act is incorporated, and shall be read as one, with this Act.

Imposition of income tax

5. (1) Income tax is imposed in accordance with this Act and at the relevant rates declared by the Income Tax (Rates) Act 1976.

 

(2) This Act does not impose tax payable by

(a) a company (other than a company in the capacity of a trustee); or

(b) a person in the capacity of a trustee of a superannuation fund.

 

 

(3) This Act does not impose tax payable in accordance with section 128b or 136a of the Assessment Act.

 

Rebate of tax

6. Where, in respect of the year of income that commenced on 1 July 1978, a person

(a) is liable to pay tax under the Income Tax (Rates) Act 1976 in respect of a taxable income that exceeds $6,600 but does not exceed $6,978; or

(b) being a trustee, is liable to pay tax under the Income Tax (Rates) Act 1976 in respect of net income of a trust estate that exceeds $6,600 but does not exceed $6,978 at a rate that, in accordance with clause 1 of Schedule 12 to that Act, is ascertained by reference to the rates that would be payable under Schedule 9 or 11 to that Act if one individual were liable to be assessed and to pay tax on that income as his taxable income,

the person is entitled in his assessment to a rebate of tax of an amount equal to

(c) in a case where the taxable income or net income exceeds $6,600 but does not exceed $6,742—5% of the amount by which the taxable income or net income, as the case may be, exceeds $6,600; and

(d) in a case where the taxable income or net income exceeds $6,742 but does not exceed $6,978—the amount ascertained by deducting from $7.10 an amount equal to 3% of the amount by which the taxable income or net income, as the case may be, exceeds $6,742.


Levy of tax

7. The tax imposed by sub-section 5(1) is levied, and shall be paid, for the financial year that commenced on 1 July 1978 and, until the Parliament otherwise provides, for the next succeeding financial year.

Provisional tax

8. Provisional tax is imposed and is payable, in accordance with the provisions of the Assessment Act, in respect of the income of the year of income that commenced on 1 July 1978.

Act to be deemed to be the Act imposing income tax

9. For the purposes of sub-section 221yb(3) of the Assessment Act, this Act shall be deemed to be the Act imposing income tax upon taxable income of the financial year that commenced on 1 July 1978.

 

Overview

The Income Tax (Individuals) Act 1978, enacted by the Parliament of Australia, serves to impose a tax on incomes of individuals, excluding those of companies and superannuation funds. This Act was introduced to fill the gap left by the need for a specific legislative framework that addresses the taxation of individual incomes distinctly from corporate and retirement fund incomes. The Income Tax (Rates) Act 1976 determines the applicable tax rates. Furthermore, the Act incorporates the Income Tax Assessment Act 1936, integrating the two Acts to streamline the tax assessment process. The overarching policy objective is to ensure that individual income is taxed appropriately and efficiently, with certain rebates available under specific conditions as outlined in the Act.

Scope and Application

The Income Tax (Individuals) Act 1978 applies to individuals and their incomes, excluding those of companies and superannuation funds, as well as individuals in their capacity as trustees of such funds. The Act is specifically concerned with the imposition of income tax at rates declared by the Income Tax (Rates) Act 1976, and it encompasses the entire Commonwealth of Australia, ensuring a uniform approach to the taxation of individual incomes. The Act incorporates the Income Tax Assessment Act 1936, thus extending its application through these subordinate instruments. It further provides for the rebate of tax for individuals with certain income thresholds, as well as the levy of tax for the financial year beginning 1 July 1978. The scope of this legislation is deliberately narrow, focusing exclusively on individual incomes, while excluding corporate entities and superannuation funds, thereby streamlining the tax obligations for individual taxpayers.

Key Provisions

The Income Tax (Individuals) Act 1978, establishes the framework for imposing income tax on individual taxpayers. Section 5(1) imposes income tax in accordance with this Act at rates declared by the Income Tax (Rates) Act 1976. Notably, section 5(2) exempts companies and trustees of superannuation funds from this tax, except when companies act in a trustee capacity. Section 6 outlines a rebate of tax for individuals with a taxable income between $6,600 and $6,978 for the year commencing 1 July 1978. This rebate is calculated based on a sliding scale, providing a 5% rebate for incomes exceeding $6,600 but not more than $6,742, and a different calculation for incomes exceeding $6,742 but not more than $6,978. Section 7 stipulates that the tax must be levied and paid for the financial year commencing 1 July 1978, and for the subsequent financial year until altered by Parliament. The Act imposes several obligations on individual taxpayers. Under section 5, taxpayers must ensure they comply with the rates and provisions for income tax as outlined in the Act and the Income Tax (Rates) Act 1976. Section 6 further requires taxpayers within the specified income range to apply for a rebate, providing documentation to substantiate their eligibility. Section 7 mandates that taxpayers pay their assessed tax by the stipulated dates. Additionally, section 8, through its reference to the Assessment Act, imposes obligations related to the payment of provisional tax, requiring taxpayers to estimate and remit tax on a provisional basis for the year of income. Breaches of the obligations and requirements under this Act can result in significant consequences. Although the Act does not explicitly list offences and penalties within its text, the broader framework under the Income Tax Assessment Act 1936 provides for various penalties and enforcement measures. For instance, failure to lodge a tax return or provide necessary information can attract civil penalties, including fines. More severe breaches, such as deliberate tax evasion or fraud, can result in criminal penalties, including substantial fines and imprisonment. The maximum penalties would be determined based on the specific nature and severity of the breach, as outlined in the Income Tax Assessment Act 1936.

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Area of Law
Taxation Law
Instrument
Act
Concepts
Definitions & Interpretation
Commencement Provisions
Offence Provisions
Imposition of income tax

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.