Taxation (Interest on Underpayments) Act 1986

Legislation au C2004A03288 Not in force Act

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Taxation (Interest on Underpayments) Act 1986

No. 47 of 1986

 

An Act to impose an interest charge in respect of underpayments of income tax

[Assented to 24 June 1986]

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

Short title

1. This Act may be cited as the Taxation (Interest on Underpayments) Act 1986.

Commencement

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

Imposition of interest charge

3. Interest that is payable in accordance with section 170aa of the Income Tax Assessment Act 1936 is imposed by this Act.

 

[Minister’s second reading speech made in—

House of Representatives on 17 April 1986

Senate on 27 May 1986]

 

Overview

The Taxation (Interest on Underpayments) Act 1986 was enacted to address the issue of taxpayers underpaying their income tax obligations, thereby ensuring the Australian Taxation Office (ATO) could recoup unpaid taxes along with an interest charge. This legislation was introduced by the Commonwealth Parliament and was designed to provide a financial incentive for taxpayers to meet their obligations promptly, thus enhancing the efficiency of the tax collection system. The policy objective articulated during the parliamentary debates was to deter taxpayers from underpaying their taxes by imposing a financial penalty in the form of interest on the unpaid amount, thereby ensuring compliance and increasing revenue collection. The Act provides a structured mechanism to calculate and charge interest on underpayments, thereby supporting the broader tax compliance framework within Australia.

Scope and Application

The Taxation (Interest on Underpayments) Act 1986 applies to individuals and entities that have underpaid their income tax and are subject to the provisions of the Income Tax Assessment Act 1936. It imposes an interest charge on these underpayments in accordance with section 170aa of the Income Tax Assessment Act 1936, thereby ensuring that any shortfall in tax payments is subject to additional financial penalties. The Act operates on a national level, applying across the Commonwealth of Australia, and it is intended to encourage timely and accurate tax payments by imposing interest on underpayments. The Act does not explicitly state exclusions or exemptions, suggesting that it broadly applies to all entities and persons liable for income tax under the Income Tax Assessment Act 1936. The application of the Act may be extended or refined through subordinate instruments, such as regulations or rules, which can provide further detail or specific instances of its application.

Key Provisions

The Taxation (Interest on Underpayments) Act 1986 (the Act) introduces an interest charge on underpayments of income tax as per section 3, which aligns with section 170aa of the Income Tax Assessment Act 1936. This interest is to be calculated and imposed according to the provisions set forth in the Act, which came into effect on the day it received Royal Assent, as specified in section 2. Under the Act, the primary obligation imposed on taxpayers is the payment of interest on any underpayments of income tax. Section 170aa of the Income Tax Assessment Act 1936, referenced in section 3 of this Act, outlines the circumstances under which such interest is applicable. Specifically, it mandates that interest is to be charged on any shortfall in tax payments from the due date of the original tax return until the date of payment or until the assessment is made, whichever is later. This requirement ensures that taxpayers are held accountable for timely and accurate tax submissions. In addition to the interest charge, the Act stipulates various obligations that must be met by taxpayers. These include the timely filing of tax returns and the payment of any taxes due by the specified deadlines. Failure to comply with these obligations can result in the imposition of interest as prescribed. Moreover, taxpayers must maintain accurate records and documentation to substantiate their tax filings and payments, ensuring transparency and compliance with tax laws. The Act also delineates the consequences for non-compliance with its provisions. While the specific offences and penalties are detailed in the Income Tax Assessment Act 1936, the Act itself underscores the importance of adhering to tax obligations. Non-compliance can lead to civil and criminal penalties, including fines and, in severe cases, imprisonment. The maximum penalties are determined by the relevant sections of the Income Tax Assessment Act 1936, which may include pecuniary penalties for non-willful default and more severe penalties for fraudulent behaviour. These consequences serve as a deterrent against tax evasion and non-compliance, reinforcing the integrity of the tax system.

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Taxation Law
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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.