A New Tax System (Goods and Services Tax) (Correcting Wine Equalisation Tax Errors) Determination 2025

The Determination revolves around a small set of legal and operational concepts defined in the instrument and used to gate access to the correction pathway.

Error (credit error and debit error). The instrument defines two mutually related mistake types (s 4). A credit error is a mistake that would have caused the assessed net amount for an earlier tax period to be overstated; a debit error is a mistake that would have caused the assessed net amount for an earlier tax period to be understated. Each has a corresponding amount: credit error amount and debit error amount (s 4). The single term error covers either type (s 4).

Net sum of the debit errors. Where a taxpayer seeks to correct a debit error for an earlier tax period when lodging a later GST return, the Determination requires the taxpayer to calculate the net sum of debit errors, defined as the sum of any debit error amounts less the sum of any credit error amounts which the taxpayer includes in the net amount for the tax period in which the correction is sought (s 4). This netting rule means that a later-period adjustment can aggregate multiple earlier errors and offsets credits against debits for the purpose of the monetary limit in s 7(c).

Compliance activity. The instrument defines "compliance activity" to mean an examination of your wine tax affairs, including audits, verification checks and record-keeping reviews, and sets objective start and end points: it begins when the Commissioner advises you an examination is to be made and ends when the Commissioner issues a notice of assessment or amended assessment for the tax period under examination or advises you the examination has been finalised (s 4). That definition is operative for s 6(d), which prevents correction through this mechanism where the error relates to a matter notified as subject to compliance activity, unless the Commissioner specifically allows correction in writing.

Timing and limits for debit errors. For debit errors, the Determination imposes three categories of conditions. First, the error cannot be the result of recklessness or intentional disregard of wine tax law (s 7(a)). Second, the GST return in which the correction is made must be lodged within a debit error time limit, which depends on current GST turnover: 18 months for turnover under $20 million, and 12 months for turnovers from $20 million upwards (s 7 and table). Third, the net sum of the debit errors must be less than a debit error value limit tied to current GST turnover: from $20,000 for small taxpayers to $894,000 for taxpayers with $1 billion and over (s 7 and table).

Interaction with assessments. The Determination permits the correction when working out the net amount for a tax period, and explicitly states that a taxpayer cannot correct an earlier error by requesting amendment of their assessment for a later tax period (s 6; s 8). The instrument therefore channels correction through the calculation of the later period’s net amount rather than through amendment processes for later assessments.

Scope constraints. The correction pathway only applies to errors that relate to amounts of wine tax or wine tax credits under the Wine Equalisation Tax law and only to errors made in earlier tax periods that started on or after 1 July 2012 (s 6(a)-(b)). The taxpayer must be registered for GST at the time the GST return seeking the correction is lodged (s 6(g)). The Determination also defers to definitions in Division 195 of the Act (s 4), and to the GST group turnover calculation note (s 7 note).

Repeal. The Determination repeals the earlier 2015 instrument (Schedule 1), making this instrument the operative Determination for correcting WET errors through GST returns.

The Determination targets a specific population of taxpayers and the Commissioner’s administrative functionaries. The primary affected parties are GST-registered taxpayers whose GST returns and net amounts involve wine tax or wine tax credits under the Wine Equalisation Tax Act 1999 (s 6(a) and s 6(g)). The instrument also contemplates GST groups: where a taxpayer is a member of a GST group the current GST turnover used for the table in s 7 is calculated for the group by including supplies made by the group in accordance with subsection 188-15(2) of the Act (note to s 7). Thus, large corporate groups that are GST grouped will be treated on a group-wide turnover basis for the debit-error thresholds and time limits.

Taxpayers with earlier tax periods that started prior to 1 July 2012 are excluded from the correction pathway created by this Determination, because s 6(b) restricts the eligible earlier tax periods to those that started on or after 1 July 2012. The instrument therefore affects only post-1 July 2012 errors.

People conducting compliance activities, and the Commissioner, are also directly implicated. The instrument defines "compliance activity" and makes its existence a bar to using the correction pathway unless the Commissioner gives written permission (s 4 and s 6(d)). Consequently, taxpayers under active examination of their wine tax affairs cannot self-correct via the mechanism unless the Commissioner permits it.

Practitioners who advise clients on GST and WET administration are affected in that they must take the Determination’s procedural and quantitative constraints into account when planning corrections. Accountants and tax lawyers will need to calculate the net sum of debit errors (s 4), determine current GST turnover for threshold application (note to s 7), verify the period of review for the earlier assessment (s 4; s 6(c)) and ensure the correction is included in the later period's net amount rather than by seeking amendment of a later assessment (s 8).

Administratively, the Commissioner retains a decision-making role. The Commissioner decides whether an examination is a compliance activity and decides whether to permit corrections that would otherwise be barred by the compliance activity rule (s 4; s 6(d)(ii)). The timing of the Commissioner’s notifications initiates or terminates the compliance activity effect (s 4). The Determination therefore affects both taxpayers’ opportunities to self-correct and the Commissioner’s leverage during examinations.

The Determination creates a permission (a right) to correct certain WET-related errors in the computation of a later GST return, and it imposes duties and preconditions on taxpayers who wish to use that permission.

Rights

• Subject to the conditions in s 6, a taxpayer has the right to correct an error made in an earlier tax period when working out the net amount for a later tax period by including the correction in the later period’s GST return (s 6).
• Where the Commissioner notifies in writing that an error which would otherwise be subject to compliance activity may be corrected under the instrument, the taxpayer has a right to correct under those circumstances (s 6(d)(ii)).

Duties and preconditions

• The taxpayer must ensure the error relates to wine tax or wine tax credits under the Wine Equalisation Tax law and that the earlier tax period began on or after 1 July 2012 (s 6(a)-(b)). This is a jurisdictional gate.
• The GST return into which the correction is made must be lodged within the period of review for the assessment of the net amount of the earlier tax period (s 6(c)). The Determination references the period of review as defined in Division 195 of the Act (s 4).
• The taxpayer must not already have corrected the error in another tax period (s 6(e)). This imposes a duty to maintain a reliable correction history and prevents double correction.
• If the error relates to a matter that is subject to a compliance activity, and the taxpayer has been notified of that compliance activity, the taxpayer may not correct that error under this instrument unless the Commissioner gives written authorisation (s 6(d)). This gives the Commissioner a gatekeeping role during examinations and audits.
• For debit errors, additional duties apply: the taxpayer must ensure the error was not due to recklessness or intentional disregard of wine tax law (s 7(a)); the correction must be made within the applicable debit error time limit determined by current GST turnover (s 7(b)); and the net sum of the debit errors included in the later period must be less than the debit error value limit corresponding to the taxpayer’s current GST turnover (s 7(c) and table). These are cumulative conditions.

Operational duties

• Taxpayers need to calculate the net sum of the debit errors when including offsets across multiple errors in the later period (s 4; s 7(c)). The instrument defines how to net debit and credit error amounts for the purpose of the threshold.
• Where the taxpayer is a member of a GST group, the taxpayer must determine current GST turnover on a group basis in accordance with the Act’s provisions referenced in the Determination (note to s 7).

Prohibited conduct

• The Determination expressly denies the route of correcting an earlier error by requesting amendment of an assessment for a later tax period. That means taxpayers cannot use amendment requests for later assessments as a substitute for the in-return correction pathway (s 8).

The rights are conditional and procedural. The Determination does not absolve taxpayers of record-keeping or broader compliance obligations under the Act or the Wine Equalisation Tax law; it creates a limited administrative route for correcting certain earlier errors within GST returns, and it assigns practical duties for timing, documentation and thresholds that taxpayers must meet to exercise that route.

The Determination itself does not set out penalties or create new offences. It is an administrative instrument that prescribes when and how a taxpayer may correct certain wine tax-related errors by including them in the net amount for a later GST return (s 6-8). The instrument therefore functions by enabling or restricting an administrative remedy rather than by imposing sanctions.

Enforcement dynamics flow from how the Determination interacts with the Commissioner’s compliance activities and the underlying wine tax and GST law frameworks referenced in the instrument. Key enforcement-related features in the Determination are these:

• Compliance activity bar. If the Commissioner has notified a taxpayer that a matter is subject to a compliance activity, the taxpayer may not correct that error under this instrument unless the Commissioner gives written permission (s 6(d)). The Commissioner, through the initiation and management of compliance activities as defined in s 4, thereby controls whether a taxpayer can use the self-correction mechanism. The Determination defines the start and end points of a compliance activity: it begins when the Commissioner advises the taxpayer that an examination is to be made and ends when a notice of assessment or notice of amended assessment is given in relation to the tax period under examination or when the Commissioner advises the taxpayer that the examination has been finalised (s 4). That temporal clarity affects when and how enforcement processes can proceed.

• Recklessness/intention exclusion. Debit errors that are the result of recklessness or intentional disregard of wine tax law are excluded from the self-correction pathway (s 7(a)). The Determination therefore leaves such matters to existing enforcement regimes in the underlying law; the instrument itself does not specify penalties but indicates that errors with culpable mental elements are not eligible for the administrative convenience of in-return correction.

• Interaction with assessments. The Determination prohibits correction of an earlier error by requesting amendment of an assessment for a later tax period (s 8). That channel restriction affects enforcement by constraining taxpayers’ procedural options; it channels corrections into the GST return process or into the standard amendment processes for the earlier period, to the extent allowed by the underlying Act and the period of review.

What the instrument does not state about penalties and enforcement:

• It does not specify fines, shortfall interest, administrative penalties or criminal sanctions. It does not amend penalty provisions in the Act or in the Wine Equalisation Tax law. Any penalties that might apply for non-compliance with wine tax obligations remain governed by the Act and the wine tax law, which are referenced but not reproduced in the Determination (s 3; s 4).
• It does not prescribe additional enforcement instruments such as mandatory reporting to another agency.

Practical enforcement implications for practitioners and taxpayers:

• Because the Determination makes eligibility to self-correct contingent on the Commissioner’s compliance activity notifications and on the absence of recklessness or intentional disregard, taxpayers under audit should not assume they can use this administrative route unless the Commissioner agrees (s 4; s 6(d); s 7(a)).
• Where taxpayers attempt to rely on the in-return correction route and do so outside the instrument’s limits, the Determination’s absence of an express penalty does not shield them from penalties that may flow under the underlying laws for incorrect net amounts or for conduct that meets statutory fault elements. The Determination’s conditions therefore operate as preconditions to administrative relief rather than substitutes for substantive compliance with penalty-bearing provisions elsewhere.

In short, the Determination structures an administrative correction pathway and reserves to the underlying law and to the Commissioner’s compliance activities the substantive enforcement and penalty mechanisms. Users should consult the Act and wine tax law for the full set of potential sanctions and interest regimes that may apply outside the scope of this instrument.

The Determination is an instrument made under the Act and operates by reference to definitions and procedural concepts contained in the Act and in the Wine Equalisation Tax law. The instrument’s text explicitly anchors itself to the Act and to Division 195 definitions; it also references the Wine Equalisation Tax law by operation of the defined term "wine tax law" and by identifying the subject matter of correctable errors as wine tax or wine tax credits under that law (s 3; s 4; s 6(a)).

Statutory basis and definitional cross-references. The instrument is made under subsection 17-20(1) of the Act (s 3). Section 4 of the instrument notes that a number of expressions are defined in Division 195 of the Act, and it lists several important terms that the reader must take from the Act, including assessed net amount, assessment, Commissioner, current GST turnover, GST group, GST return, net amount, period of review, tax period and wine tax law (s 4). The instrument therefore relies on the Act for core substantive definitions and procedural scaffolding such as the period of review.

GST group turnover calculation. For the purposes of determining the applicable debit error time limits and value limits in s 7, the instrument requires that current GST turnover be calculated for a GST group by including supplies made by the group in accordance with subsection 188-15(2) of the Act (note to s 7). This cross-reference requires taxpayers who are GST group members to apply the Act’s group turnover rules when assessing eligibility under the table in s 7.

Procedural interaction with assessments and period of review. Section 6(c) requires a taxpayer to lodge the GST return seeking to correct an earlier error within the period of review for the assessment of the net amount of the earlier tax period. The Determination does not itself define the period of review but points the reader to the Act’s Division 195 definition (s 4). The period of review and assessment amendment rules in the Act therefore remain operative and determine when the in-return correction pathway can be used.

Relationship with amendment mechanisms. The instrument explicitly restricts a particular pathway: taxpayers cannot correct an earlier error by requesting an amendment of an assessment for a later tax period (s 8). That means the instrument is intended to be an exception or alternative to correction by amendment of the earlier assessment, but it also closes off correction by amendment of later-period assessments. The effect is that corrections must be effected either through in-return adjustments under this Determination or through amendment processes applicable to the earlier period, subject to the Act’s rules.

Interaction with compliance activities. The instrument defines "compliance activity" and provides that errors which are the subject of a compliance activity cannot be corrected using this instrument unless the Commissioner allows it in writing (s 4; s 6(d)). Because the start and end points of a compliance activity are defined in the instrument, this establishes a procedural link between the Commissioner’s audit powers under the Act and the availability of the self-correction route.

Repeal of prior Determination. Schedule 1 repeals the earlier Wine Equalisation Tax: Correcting WET Errors Determination 2015. The repeal is absolute: "The whole of the instrument" is repealed (Schedule 1). That means any interplay between that earlier determination and the Act is replaced by the rules in this Determination from commencement (Schedule 1; s 2).

Limits on fishing for relief. The Determination’s enumerated conditions and cross-references mean that taxpayers must consult the Act and the wine tax law for the full legal picture. The instrument sits within the statutory architecture of the Act and does not displace the Act’s definitions, assessment amendment regimes, penalty regimes, or the Wine Equalisation Tax law’s substantive provisions.

In short, the Determination is a procedural instrument that must be read and applied in the context of the Act and the Wine Equalisation Tax law. It borrows key concepts from the Act, instructs taxpayers to apply Act rules when determining GST group turnover, and limits the use of amendment routes, while leaving substantive enforcement and penalty matters to the underlying legislation.

This Determination records a single structural amendment action and a commencement timetable. The instrument itself contains its making date and signing officer, and it expressly repeals the earlier 2015 Determination in full.

Key items in the instrument’s amendment history:

• Commencement. The instrument commences on the day after it is registered (s 2). The commencement table in s 2 indicates the whole of the instrument takes effect at that time. The instrument includes the registration timing note that the table relates only to the provisions as originally made (s 2).
• Authority for amendment. The Determination is made under subsection 17-20(1) of the Act (s 3). That subsection provides the statutory delegation under which the Commissioner may make determinations; the instrument thus rests on an express statutory authorisation.
• Repeal of prior instrument. Schedule 1,the only Schedule in the instrument,repeals the entire Wine Equalisation Tax: Correcting WET Errors Determination 2015 by stating "The whole of the instrument" is repealed and providing the instruction "Repeal the instrument" (Schedule 1). There are no partial or staged repeals; the 2015 Determination is removed in its entirety.
• No subsequent amendments recorded. The instrument’s own commencement table contains a note that it will not be amended in the instrument to reflect later amendments (s 2). The Determination, as published, thus presents itself as a single consolidated instrument replacing its predecessor.

Administrative metadata recorded in the instrument that are relevant to amendment history:

• The instrument is identified by its formal name, includes the date 4 August 2025 and is signed by Larissa Evans, Acting Deputy Commissioner of Taxation, which records the administrative provenance of the Determination (front matter).
• The instrument’s Contents table lists sections and the Schedule, showing the structure that will be operative on commencement.

What the instrument does not show:

• The Determination does not include an explanatory memorandum, second reading speech, or statement of legislative intent beyond its operative provisions, so the instrument contains no internal narrative about why particular thresholds or time limits were selected. It therefore provides no internal record of policy choices beyond the numeric and procedural choices encoded in the text.

For researchers tracking changes to the Commissioner’s administrative rules, the operative amendment in this instrument is a complete repeal of the 2015 Determination and substitution with the 2025 Determination’s text. Any historical comparison between the 2015 and 2025 instruments must be done by directly comparing the instruments, because this instrument provides no comparative commentary.

The Determination itself does not record any litigation history. It is an administrative instrument that replaces the previous Wine Equalisation Tax: Correcting WET Errors Determination 2015 (Schedule 1), and the text includes no report or note of case law, tribunal decisions, or disputes related to either the 2015 Determination or this 2025 Determination.

Because this instrument is limited to prescribing procedural conditions for correcting certain WET-related errors within GST returns, the instrument’s text nevertheless uses terms and constructs that could, in practice, be the subject of dispute under the Act or the wine tax law. For example:

• The instrument excludes debit errors that result from "recklessness as to the operation of a wine tax law or intentional disregard of a wine tax law" (s 7(a)). The Determination does not define "recklessness" or "intentional disregard" within its text; it therefore presumes application of those concepts as understood under the law. Whether a particular set of facts meets those mental-element standards would be a question for the governing statute, administrative decision-making, or, where contested, litigation. The instrument does not provide guidance on evidentiary thresholds or standards of proof for that determination.
• The instrument specifies that corrections cannot be made for earlier tax periods that started before 1 July 2012 (s 6(b)). Disputes could arise about the dating of earlier tax periods or about what qualifies as the relevant earlier tax period, but the Determination itself does not address such interpretive conflicts.

Given that the instrument contains no litigation history and names no cases, researchers seeking to identify any disputes about its application will need to search external sources: tribunal and court decisions applying the Act and the wine tax law; ATO public rulings, guidance and determinations; and administrative review decisions where taxpayers contested the Commissioner’s refusal to permit correction because of compliance activity or alleged recklessness. The Determination does not provide a litigation map, and it does not purport to alter or displace the dispute resolution routes available under the Act and the wine tax law.

Practitioners should therefore treat the Determination as a procedural rule-set and consult case law and tribunal decisions concerning the underlying Act and WET law where factual questions about compliance activity, periods of review, recklessness or intent, and the calculation of current GST turnover for groups may be implicated. The instrument itself is silent on any past or pending litigation.

This Determination contains precise procedural and numeric constraints that can produce practical traps if overlooked. The following points are frequently consequential in practice and are directly grounded in the instrument’s text.

1. Eligibility is limited to errors in earlier tax periods that started on or after 1 July 2012 (s 6(b)). If an error relates to a period that began earlier, the in-return correction route in this Determination is unavailable.

2. The mechanism requires that the GST return used to make the correction be lodged within the period of review for assessment of the earlier tax period (s 6(c)). The Determination refers readers to the Act for the definition of period of review (s 4). Practically, that means taxpayers must align the later-period lodgment with the statutory review window for the earlier period. Failure to lodge within that window will prevent use of this route.

3. Compliance activities block correction unless the Commissioner permits. If the taxpayer has been notified that a matter is subject to a compliance activity, the taxpayer cannot use this Determination to correct the error unless the Commissioner notifies in writing that the error can be corrected under the instrument (s 6(d)). Because the instrument also defines the start of compliance activity as the day the Commissioner advises you that an examination is to be made (s 4), a Commissioner-initiated examination can preclude corrective action early in the audit process.

4. Debit errors face three cumulative conditions. Even if an error is otherwise eligible under s 6, a debit error may only be corrected under s 7 if it was not the result of recklessness or intentional disregard (s 7(a)), the correction is lodged within the applicable time limit (s 7(b)), and the net sum of debit errors is below the relevant value limit for your GST turnover band (s 7(c) and table). All three must be satisfied.

5. Time limit disparities by turnover band. Small taxpayers with current GST turnover under $20 million have an 18-month debit error time limit, but all larger turnovers have a 12-month limit (s 7 and table). If a taxpayer miscalculates their current GST turnover or treats the threshold incorrectly for GST groups, they can miss the applicable time limit.

6. Value limits can be high for very large groups. For taxpayers with $1 billion and over current GST turnover the debit error value limit is $894,000 (s 7 table). That precise figure is not rounded in the Determination. For lower turnover bands, the value limits are much smaller and could be exhausted by a single error.

7. Netting of debit and credit error amounts. The "net sum of the debit errors" is defined as the sum of debit error amounts less the sum of any credit error amounts that are included in the later period (s 4). If a later-period correction includes both debit and credit amounts, that netting can reduce or eliminate the amount counted against the value limit. However, this requires careful accounting and record-keeping to demonstrate which earlier-period errors were offset and how the net sum was computed.

8. Cannot correct by amending a later assessment. The Determination prohibits correcting an earlier error by requesting an amendment of your assessment for a later tax period (s 8). Some practitioners may have assumed amendment of a later assessment would suffice; the instrument disallows that pathway and requires the correction to be incorporated into the computation of the later period’s net amount.

9. Registration requirement. The taxpayer must be registered for GST at the time of lodging the GST return used to correct the error (s 6(g)). Deregistration or late registration can therefore preclude use of the mechanism.

10. GST group turnover calculation. For GST group members, current GST turnover is calculated for the group by including supplies made by the group (note to s 7). Misapplication of the Act’s group turnover rules can lead to selecting the wrong time limit or value limit.

11. No relief for culpable conduct. The exclusion of recklessness and intentional disregard for debit errors (s 7(a)) means that aggressive or careless conduct cannot be corrected using this administrative convenience. That can convert attempted corrections into contestable enforcement matters if the Commissioner alleges culpability.

12. Documentation burden. The Determination presumes taxpayers can compute debit/credit error amounts, date earlier tax periods correctly, prove lodgment times, and evidence that they have not previously corrected the error in another period (s 4; s 6(e)). Poor records can undermine eligibility.

13. Repeal of 2015 Determination. The previous 2015 Determination is repealed in full by Schedule 1. If practitioners rely on prior practice under the 2015 instrument, they must confirm whether any changes in thresholds, time limits or wording affect existing correction strategies (Schedule 1). The Determination itself contains no comparative commentary.

Tax professionals should treat these points as operational constraints rather than abstract warnings. Each "gotcha" flows directly from the statutory text and requires documentation, precise timing and careful mapping of earlier tax-period mistakes into later-period computations.

To use this Determination to correct a wine tax-related error, taxpayers should follow a checklist grounded in the instrument’s conditions. The steps below set out the actions the instrument requires or implies. Each action ties to the relevant provision in the Determination.

1. Confirm the error relates to wine tax or wine tax credits under the Wine Equalisation Tax law. The Determination only covers WET-related amounts (s 6(a)).

2. Confirm the earlier tax period started on or after 1 July 2012. The correction pathway is unavailable for periods that started before that date (s 6(b)).

3. Confirm GST registration at time of lodgment. You must be registered for GST when lodging the GST return that will include the correction (s 6(g)).

4. Check the period of review for the earlier tax period. The GST return that includes the correction must be lodged within the period of review for the assessment of the net amount of the earlier tax period (s 6(c)). The Determination references Division 195 of the Act for the period of review definition (s 4). Establish the closing date of that period of review to ensure timely lodgment.

5. Confirm the error is not currently subject to a compliance activity, or else obtain the Commissioner’s written permission. If the Commissioner has notified you that the matter is subject to a compliance activity, you cannot correct under this instrument unless the Commissioner gives written notice that the error can be corrected (s 6(d)). Because a compliance activity begins when the Commissioner advises you that an examination is to be made and ends when a notice of assessment or amended assessment is given or the Commissioner advises that the examination has been finalised, you should maintain contemporaneous records of any Commissioner communications about examinations (s 4).

6. Check that the error has not been corrected in another tax period. The instrument forbids correcting the same error more than once (s 6(e)). Ensure your accounting ledgers and lodged returns show whether any part of the error has already been adjusted.

7. For debit errors, apply the three s 7 conditions: a. Confirm the error was not due to recklessness or intentional disregard of wine tax law. This is a substantive disqualification (s 7(a)). Document the underlying facts and internal controls to demonstrate absence of recklessness or intentional disregard. b. Determine your current GST turnover and the applicable debit error time limit. Use your current GST turnover band to identify the correct debit error time limit from the table in s 7. For turnover less than $20 million the time limit is 18 months, for turnovers of $20 million and above it is 12 months after the due date of the GST return for the tax period in which the error was made (s 7 and table). For GST groups, compute group turnover in accordance with the Act’s subsection referenced in the note to s 7. c. Compute the net sum of the debit errors and confirm it is less than the debit error value limit for your current GST turnover band. The value limits are set in the s 7 table and range from $20,000 up to $894,000 depending on turnover (s 7 and table). When multiple earlier errors are being corrected in the same later return, net debit and credit error amounts as defined in s 4.

8. Prepare documentation supporting the calculations. The Determination’s definitions and limits require that you be able to identify and quantify the earlier-period debit or credit error amounts, the calculation of the net sum of debit errors, the date the earlier tax period started, the date the GST return is lodged, your current GST turnover calculation and any communications with the Commissioner about compliance activities (s 4; s 6; s 7).

9. Make the correction when working out the net amount for the GST return for the tax period you are using to correct the error. Incorporate the adjustment into the return calculation and lodge the GST return within the period of review for the earlier period (s 6(c)). The instrument requires the correction be made in the computation of the later period’s net amount; it does not permit correcting by amending a later-period assessment (s 8).

10. Retain records showing you complied with the Determination’s conditions. Keep a contemporaneous trail that would allow the Commissioner to verify eligibility: how the earlier-period error amount was calculated, the netting of debit and credit amounts, the current GST turnover calculation, the date of lodgment, and any communications with the Commissioner.

11. If under an examination, request written permission from the Commissioner. If a compliance activity covers the error, engage with the Commissioner and request written authorisation to correct the error under this Determination (s 6(d)(ii)). Do not proceed on the assumption permission will be granted.

12. If in doubt, seek specialist tax advice. The Determination cross-references concepts defined in the Act (s 4) and uses legal standards such as recklessness or intentional disregard. Professional advice will be required where those standards or the calculation of group turnover and periods of review are uncertain.

Following the above checklist aligns practice with the Determination’s requirements. Practically, compliance turns on accurate dating of tax periods, precise calculation of debit and credit amounts, timely lodgment within the period of review, documentary proof of non-reckless conduct for debit errors, and attention to whether a compliance activity prevents self-correction without written permission from the Commissioner.