Revenue Units Act 2009

Revenue unit as unit of account. The Act defines the operational meaning of a fee expressed as a number of "revenue units". A reference in Territory law to a fee or charge expressed in revenue units is converted into dollars by multiplying the number of units by the monetary value of a revenue unit, calculated under s 4 (s 3(1)). The Act clarifies that the "number of revenue units" can be whole, decimal or fractional (note to s 3(1)).

Monetary value and indexation formula. The Act sets a fixed monetary value for a specified financial year and a formula for subsequent years. For the financial year ending 30 June 2023 the monetary value is $1.27 (s 4(1)(a)). For later years the value is calculated by the recursive formula A = B × [the greater of C/D and 1.03], where B is the prior year monetary value, C is the average of Darwin CPI for the four quarters immediately preceding the financial year, and D is the average of Darwin CPI for the four quarters two years prior (s 4(2)). The mechanism therefore uses a CPI ratio as an annual indexation factor but floors indexation at 1.03, creating an effective annual floor of 3 per cent growth in the monetary value of a revenue unit (s 4(2)). The monetary value calculated by the formula is rounded down to two decimal places (s 4(3)).

CPI source and definition. The CPI figures used are the Consumer Price Index: All Groups Index Number for Darwin as published by the Australian Statistician under the Census and Statistics Act 1905 (Cth) (s 4(5)). The Act defines "quarter" for the CPI averaging as the standard March, June, September or December quarter (s 4(5)).

Rounding rules. There are two separate rounding conventions. First, after applying the indexation formula the monetary value for a unit is rounded down to two decimal places (s 4(3)). Second, when a fee amount obtained by multiplying units by unit value is not a multiple of $1, the final fee payable is rounded down to the nearest whole dollar (s 3(2)). The Act gives a worked example demonstrating the latter (s 3(2) example).

Timing and publication. If the monetary value calculated for a new financial year increases from the previous year, that value takes effect on 1 July and applies only to fees incurred on or after that date (s 5(a)-(b)). The Commissioner of Territory Revenue must notify the new value by Gazette notice before it takes effect, but the failure to do so does not affect the 1 July commencement (s 6(1)-(2)). The Act cross‑references the Commissioner as defined in the Taxation Administration Act 2007 (s 6(3)).

Regulatory and transitional framework. The Administrator may make regulations under the Act (s 7). The Act repeals the 2000 Act but continues that earlier Act’s rules for fees incurred before commencement (s 8; s 9(2)). Specific transitional rules govern application of amendments made by the Revenue Legislation Amendment Act 2018 and the Revenue Legislation Amendment and Repeal Act 2022 (ss 10-11).

Subject to contrary intention. The application of s 3(1) to a particular Act is subject to a contrary intention in that Act (s 3(3)), meaning an Act can explicitly depart from the revenue unit conversion mechanism.

Non‑retrospectivity of CPI methodology changes. The Act expressly states that any retrospective change to the method of calculating the Darwin CPI does not retrospectively affect the revenue unit value (s 4(4)). This removes a route by which an adjustment in CPI methodology could change previously calculated monetary values.

Laws that use revenue units. The immediate legal effect is on any Territory law that expresses a fee or charge as a number of revenue units. Those laws are the primary instruments that will cause payments to be converted into a dollar amount using the mechanism in s 3(1) and the indexation provisions in s 4. The Act does not itself list the affected fees; it sets the conversion and indexation rules that other Territory statutes reference.

Payors of territory fees. Individuals and entities that are liable to pay fees or charges under Territory law expressed in revenue units are those who ultimately pay. The Act changes the way those monetary obligations are calculated and indexed over time: the monetary value of a revenue unit is updated each financial year under the formula in s 4(2). For payors this creates an annual, formulaic change to the unit price that translates into changes in money amounts owed after multiplication and rounding (ss 3(1), 4(2)-(3), 3(2)).

Government revenue and agencies. Territory agencies and revenue collection functions will be affected operationally because fee schedules expressed in units will yield different dollar amounts over time as the revenue unit’s monetary value changes. Agencies that set fees by statute will need to ensure their administrative systems apply the correct monetary conversion at the relevant dates (s 5) and comply with publication obligations executed by the Commissioner (s 6).

Commissioner of Territory Revenue and Administrator. The Commissioner has an administrative duty to notify by Gazette the new monetary value before it takes effect (s 6(1)). The Act identifies the Commissioner by cross‑reference to the Taxation Administration Act 2007 (s 6(3)). The Administrator has regulation‑making power for matters under the Act (s 7); this means that certain implementation details may be set by regulation rather than the Act itself.

Legislatures and drafters of Territory Acts. Because s 3(3) preserves the operation of a contrary intention in an Act, parliamentary drafters and policy makers who prefer a fixed dollar fee or an alternative indexation mechanism must express that intention in the relevant Act. This affects legislative drafting choices and the scope for future automatic increases.

Transitional cohorts. Fees incurred before the Act’s commencement remain governed by the repealed Act if unpaid at commencement (s 9(2)). Specific cohorts of fees are subject to transitional rules for later amendment acts (ss 10-11), so practitioners and payors must be attentive to the date of incurrence to determine which version of the Act applies.

Operators of billing and finance systems. Practically, any person or department implementing billing must adopt the rounding conventions and store the monetary value to two decimals (s 4(3)), then apply the final rounding down to whole dollars on computed fees (s 3(2)). This affects accounting, invoicing, and revenue recognition processes.

Entities relying on precision. Where fees are small, or where many small fees aggregate, the rounding rules in s 4(3) and s 3(2) affect aggregate receipts and payor burdens. The Act’s design shifts micro‑rounding outcomes in a specified direction (downwards), which affects both payors (they pay slightly less than unrounded multiplication) and recipients (receipts are slightly lower than exact multiplication).

Conversion duty and fee computation. The core duty imposed by the Act is procedural: whenever a Territory law expresses a fee or charge as a number of revenue units, the duty falls on the responsible authority to compute the equivalent dollar amount by multiplying the number of units by the monetary value of a revenue unit as set under s 4 (s 3(1)). The Act does not itself assign the duty of calculation to any single officer, but the obligation is embedded in the legal conversion rule that other laws will rely on (s 3(1)).

Rounding obligations. Two specific computational obligations follow from the statutory design. First, the monetary value of a revenue unit calculated under s 4(2) must be rounded down to two decimal places (s 4(3)). Second, when the multiplied amount is not a multiple of $1, the payer is charged the amount rounded down to the nearest dollar (s 3(2)). Those rounding rules create mandatory numerical adjustments when converting unit‑based fees into payable amounts.

Indexation and effective date. The Act provides that when the new monetary value calculated under s 4 exceeds the previous monetary value, that new value takes effect on 1 July of the new financial year (s 5(a)), and it applies only to fees or charges incurred on or after that effective date (s 5(b)). This creates a clear temporal rule that duty holders must apply.

Notification duty on Commissioner. The Commissioner of Territory Revenue has a specific duty to notify the new monetary value by Gazette notice before it takes effect (s 6(1)). The Act qualifies the legal effect of failure to notify: the failure does not alter the 1 July effect (s 6(2)). The Commissioner is identified by cross‑reference to the Taxation Administration Act 2007 (s 6(3)).

Regulation‑making power. The Administrator has the power to make regulations under the Act (s 7). This grants executive discretion to prescribe subordinate law to support implementation, though the Act does not specify the subject matter scope of those regulations beyond the broad authorisation.

Right of legislative departure. Section 3(3) preserves a substantive right for other Acts to displace the conversion rule by expressing a contrary intention in the Act. That is a legal right exercisable by the legislature: if an Act contains a contrary intention, s 3(1) does not operate to convert revenue units under this Act’s mechanism.

Transitional application rules. Duties to apply the Act or the repealed Act depend on the date a fee or charge is incurred. The Act applies to fees or charges incurred after commencement (s 9(1)); the repealed Act continues to apply to fees or charges incurred before commencement but unpaid at commencement (s 9(2)). Amendments introduced by later amending Acts have application dates prescribed in ss 10-11. Those transitional provisions create statutory duties for authorities to apply the correct version of the conversion mechanism depending on date of incurrence.

No penalties in Act. The Act does not create offences, penalties or an enforcement regime for non‑payment of fees; it operates as a conversion and indexation statute that interacts with the underlying legislation that establishes liabilities and enforcement mechanisms. The Commissioner’s publication duty is administrative (s 6(1)).

Non‑retrospectivity of CPI methodology changes. Section 4(4) creates a de jure constraint on retrospective CPI methodology changes affecting prior unit values. This is an entitlement for parties who rely on previously published monetary values: changes to CPI calculation methods cannot retroactively alter those past values.

No penalty provisions in the Act. The text of the Revenue Units Act 2009 contains no offence, penalty, or enforcement provisions. The Act sets rules for converting revenue units into dollar amounts and for indexation, rounding and publication, but it does not itself prescribe sanctions for breach, debt recovery procedures or enforcement mechanisms. Consequently enforcement of payment obligations remains a matter for the substantive Territory laws that impose the underlying fees and for the general revenue collection framework of the Territory. This follows from the Act’s structure: its provisions govern calculation (s 3), indexation (s 4), timing (s 5) and publication (s 6), but there are no penal clauses or enforcement chapters.

Role of other laws. Because the Commissioner is identified by reference to the Taxation Administration Act 2007 (s 6(3)), any enforcement powers relevant to fee collection, debt recovery, or compliance will stem from that Act or from the underlying statute that creates the fee. The Revenue Units Act 2009 does not expand or diminish any enforcement powers contained elsewhere; it only prescribes how monetary values are to be derived where a fee is expressed in revenue units.

Administrative publication non‑compliance. The Act imposes an obligation on the Commissioner to notify the new monetary value by Gazette before the new value takes effect (s 6(1)). The Act also clarifies that failure to notify does not change the statutory effect of the new value commencing on 1 July (s 6(2)). That structure allocates some administrative risk to the Commissioner for publishing, but the Act makes the substantive indexation timing and effect independent of the publication step. There is therefore no statutory sanction in this Act for non‑publication; non‑publication does not prevent statutory effect.

Practical enforcement implications. In practice, collecting agencies will rely on the conversion and indexation output the Act produces. Where the Act’s rounding rules reduce the final payable amount below the raw multiplication total (s 3(2)), collecting agencies must account for the statutory rounding and cannot lawfully demand the unrounded figure. However, the Act does not itself provide a mechanism for dispute resolution or for challenging a collection; those procedures will be found in the relevant fee‑creating statutes or general taxation and revenue administration legislation.

Regulatory instruments and compliance. The Administrator’s power to make regulations (s 7) may be used to create detailed implementation procedures or administrative requirements relevant to compliance and enforcement of conversion rules, but only if regulations are made under the Act. The Act itself does not specify the extent of such regulations. Therefore enforcement details are likely to be located in other legislation or in subordinate instruments made pursuant to s 7 or other enabling statutes.

Conversion rule applies across Territory laws unless displaced. Section 3(1) instructs that a reference in a law of the Territory to a fee or charge expressed as a number of revenue units is to be converted into a dollar amount using the monetary value of a revenue unit as calculated under s 4. Importantly, s 3(3) preserves legislative autonomy: where an Act indicates a contrary intention the conversion rule is subject to that contrary intention. That provides a direct interaction rule: the Revenue Units Act 2009 supplies the default conversion and indexation mechanism, but specific Acts may override it.

Cross‑reference to CPI source and Commonwealth statute. The indexation formula in s 4 relies on the Consumer Price Index: All Groups Index Number for Darwin as published by the Australian Statistician under the Census and Statistics Act 1905 (Cth) (s 4(5)). This is an express point of interaction with Commonwealth statistical outputs. The Act further limits retrospective effects of any later change to the method of calculating the Darwin CPI (s 4(4)). Thus, although the Act uses a Commonwealth statistical series, it provides a territorial shield against retrospective methodology changes affecting previously calculated unit values.

Interaction with taxation and revenue administration. The Commissioner of Territory Revenue is the officer tasked with Gazette notification of new monetary values (s 6(1)), and the Act identifies that office by reference to the Taxation Administration Act 2007 (s 6(3)). Operational enforcement and revenue collection mechanisms therefore interact with the broader taxation administration framework; the Act does not replicate those rules but defers to existing structures.

Regulations and delegated legislation. Section 7 gives the Administrator power to make regulations under this Act. This creates an interaction with the Territory’s regulatory framework for subordinate legislation. The Act leaves implementation details and possible operational prescriptions to regulation, subject to usual statutory limits on delegated legislation.

Repeal and transitional continuity. The Act expressly repeals the Revenue Units Act 2000 (s 8) but preserves application of the repealed Act to fees incurred before commencement but unpaid at commencement (s 9(2)). This creates a temporal interaction between the two statutes and prevents retroactive displacement of obligations incurred under the earlier Act.

Interaction with amendment acts. The endnotes show that the Act was amended by the Revenue Legislation Amendment Act 2018, the Treasury and Finance Legislation Amendment Act 2020 and the Revenue Legislation Amendment and Repeal Act 2022 (Endnotes 2 and 4). The Act contains transitional provisions that give effect dates for those amendments: amendments by the 2018 Act apply to fees or charges incurred on or after 1 July 2018 (s 10(1)); the 2022 amendment applies to fees or charges incurred on or after 1 July 2022 (s 11(1)). Those transitional rules are the statutory mechanism for aligning the Act with subsequent legislative change.

Priority and express intention. Because the Act’s conversion is triggered by a “reference in a law of the Territory” to fees expressed in revenue units (s 3(1)), any territorial law that expressly specifies an alternative valuation, indexation mechanism, or timing will have primacy for that fee to the extent it contains a contrary intention (s 3(3)). Legal practitioners need to identify the fee‑creating instrument to determine whether the Revenue Units Act’s default rules apply.

No standalone enforcement regime. The Act’s lack of penalty or enforcement provisions means that its interaction with laws that create collection powers, remedies, or penalties is functional: the Act supplies numbers and timing; other laws supply the enforcement mechanisms.

Primary enactment and commencement. The Revenue Units Act 2009 (Act No. 35, 2009) received assent on 15 December 2009 and commenced on 1 January 2010 (Endnote 2; s 2). The Act repealed the Revenue Units Act 2000 (s 8) but preserved transitional application of the repealed Act for fees incurred before commencement but unpaid at commencement (s 9(2)).

Later amendments recorded in endnotes. The reprint’s endnotes identify subsequent amending legislation and changes to specific sections. The Act was amended by the Revenue Legislation Amendment Act 2018 (Act No. 14, 2018), the Treasury and Finance Legislation Amendment Act 2020 (Act No. 28, 2020) and the Revenue Legislation Amendment and Repeal Act 2022 (Act No. 15, 2022) (Endnote 2). The dates of assent and commencement for those amending Acts are recorded in the endnotes. The 2018 amending Act’s assent date was 28 June 2018 and various parts commenced on 1 May 2018, 1 July 2018 or 1 July 2019 depending on the provision (Endnote 2). The Treasury and Finance Legislation Amendment Act 2020 assented on 15 December 2020 with parts commencing on 1 July 2020 and 1 December 2020 (Endnote 2). The Revenue Legislation Amendment and Repeal Act 2022 assented on 30 June 2022 and commenced on 1 July 2022 (Endnote 2).

Sections amended. The reprint’s list of amendments shows that s 4 was amended by the 2018, 2020 and 2022 Acts (Endnote 4: s 4 amd No. 14, 2018, s 28; No. 28, 2020, s 6; No. 15, 2022, s 15). Sections 10 and 11 were inserted by the 2018 and 2022 Acts respectively (Endnote 4: s 10 ins No. 14, 2018, s 29; s 11 ins No. 15, 2022, s 16). Separate general amendments of a formal nature were made by the Interpretation Legislation Amendment Act 2018 to ss 1, 6 and 9 (Endnote 3).

Transitional application for amendments. The Act contains transitional provisions specifying the temporal effect of amendments. The amendments made by the Revenue Legislation Amendment Act 2018 apply to fees or charges incurred on or after 1 July 2018 while the Act, as in force before 1 July 2018, continues to apply to fees incurred before that date (s 10(1)-(2)). Similarly, the amendment made by the Revenue Legislation Amendment and Repeal Act 2022 applies to any fee or charge incurred on or after 1 July 2022 and the prior version continues to apply to fees incurred before that date (s 11(1)-(2)). Section 9 addresses application at the original commencement, preserving the repealed Act’s effect for fees incurred prior to the 2010 commencement but unpaid at that date (s 9(2)).

Practical import of history. The recorded set of amendments demonstrates that the principal substantive mechanism,the indexation formula in s 4,has been the target of legislative change across multiple amending Acts (Endnote 4). The reprint shows which sections were directly amended. For practitioners this history indicates which versions of s 4 apply to particular fee cohorts, and that transitional clauses in the Act must be checked to determine which version governs fees incurred in specific periods (ss 9-11).

No retrospective CPI methodology effect. The Act includes an express non‑retrospectivity clause for changes to CPI calculation methods (s 4(4)). That clause survives amendment history and operates irrespective of later changes to external CPI methodology.

No cases or judicial decisions are recorded in the Act text or the endnotes. The reprint and endnotes supplied with the Act identify legislative amendments and formal changes but do not include any reported litigation, court decisions or tribunal determinations dealing with the interpretation or application of the Revenue Units Act 2009. The endnotes set out the list of amending Acts and general amendments of a formal nature (Endnotes 2-4), but no judicial proceedings are cited.

Implications of an absence of reported litigation. The absence of litigation recorded in the Act reprint does not preclude disputes arising in practice about interpretation. Key areas susceptible to potential legal argument include: (1) the scope of a "contrary intention" under s 3(3) and how clearly a fee‑creating Act must express departure from the Revenue Units Act; (2) the precise computation steps when a revenue unit value is updated mid‑billing cycles or for liabilities incurred near 1 July; (3) the interaction between the Act’s rounding rules (s 4(3) and s 3(2)) and accounting or statutory debt calculations; and (4) the effect of s 4(4) that prevents retrospective CPI methodology changes from altering previously calculated unit values. These are points of statutory construction that, in other statutory contexts, can generate litigation over statutory language and legislative intention.

Potential for administrative review rather than litigation. Because the Act imposes administrative duties (for example the Gazette notification duty in s 6(1)) and operates within a broader revenue administration framework, disputes may be more likely to proceed by way of objection, review, or administrative complaint mechanisms available under the Taxation Administration Act 2007 or other relevant revenue legislation than by standalone claims about the Act itself. The Act’s text, however, does not set out those dispute resolution or review pathways.

Advisory caution. In the absence of reported judicial interpretation, parties and advisers must rely closely on the Act’s text and its transitional provisions (ss 9-11), and on the particular language of fee‑creating Acts to determine whether the default conversion and indexation rules apply or whether a contrary intention has been expressed (s 3(3)). Where ambiguity exists, a factual record of publishing, Gazette notices, and dates of incurrence will be important in any administrative review or judicial challenge.

Rounding occurs at two stages and in a downward direction. The Act requires rounding the monetary value of a revenue unit down to two decimal places after indexation (s 4(3)), and then requires that any fee amount not a multiple of $1 be rounded down to the nearest whole dollar (s 3(2)). Those sequential rounding steps mean that (1) the stored monetary value used to compute fees will always be at most the unrounded indexation result (s 4(3)) and (2) the final payable amount will always be at most the mathematical product of the unrounded numbers (s 3(2)). Practitioners must be careful implementing two separate rounding rules to avoid double rounding errors or incorrect upward rounding that would contradict the statutory downward rounding mandates.

Minimum annual increase of 3 per cent. The indexation formula uses the greater of a CPI ratio and 1.03 (s 4(2)). This creates an explicit floor of 3 per cent growth in the monetary value from year to year. Where Darwin CPI indicates less inflation, the Act nevertheless mandates at least 3 per cent increase. That choice has direct budgetary and statutory effects: fees expressed in revenue units will at least rise by 3 per cent annually in monetary terms via the unit value, subject to rounding (s 4(2), s 4(3)).

Timing of effect and incurrence rule. A new value that increases takes effect on 1 July (s 5(a)) and applies only to fees or charges incurred on or after that date (s 5(b)). The key legal moment is "incurrence" of the fee or charge; the Act does not define incurrence in general for all fee contexts. Because different statutes may treat incurrence, billing, liability accrual, or invoice dates differently, parties must look to the relevant fee‑creating Act to determine whether a particular liability falls before or after 1 July. Mistakes in that temporal analysis can cause misapplication of the unit value.

Publication does not control effect. Although the Commissioner must notify the new monetary value by Gazette before it takes effect (s 6(1)), s 6(2) provides that failure to publish does not affect the 1 July operation. Practically, agencies cannot avoid the statutory date by failing to publish; however, lack of publication may produce administrative confusion for payors and collectors, particularly where billing cycles straddle 1 July.

"Contrary intention" carve‑out. Section 3(3) means an Act can displace the conversion rule. That creates a drafting risk: a bill or instrument that assumes the Revenue Units Act applies may be wrong if the fee‑creating Act contains an express contrary intention. Drafters and advisers must check the fee statute text for an express override before applying the revenue unit conversion.

Dependency on Darwin CPI series. The indexation mechanism depends on the Darwin CPI series published by the Australian Statistician (s 4(5)). While the Act insulates prior values from retrospective changes to CPI methodology (s 4(4)), a change in the content or availability of the Darwin CPI series could introduce operational risk. The Act does not specify contingency procedures if the CPI is temporarily unavailable or replaced, nor does it specify alternative indices.

Two‑year averaging and ratio. The formula uses the average of four quarters immediately preceding the financial year (C) and the average for the four quarters two years preceding (D) to form a ratio C/D (s 4(2)). That design creates sensitivity to the timing of quarter selection and could produce non‑intuitive uplifts in certain CPI trajectories. Implementers must take care to compute the averages over precisely the specified quarters.

Transitional complexity for amendments. The Act contains several transitional clauses addressing different amendment dates (ss 9-11). Practitioners must identify which version of the indexation rule applies to a particular fee based on the date of incurrence and the commencement dates for each amending Act as recorded in the endnotes (Endnote 2). Failure to apply the correct historical formula can yield incorrect billing.

No enforcement or dispute resolution provisions. Because the Act lacks enforcement mechanisms, disputes about whether a fee was correctly calculated will need to be resolved under the fee‑creating statute or the Taxation Administration Act 2007. Parties should not expect the Revenue Units Act to provide procedural remedies.

For fee‑creating authorities (legislature, agencies, drafters)

• Express contrary intention where needed. If a fee should not be subject to the default conversion and indexation approach, the creating Act must contain an express contrary intention, as s 3(3) displaces the default rule. Check the relevant legislative drafting to ensure the desired treatment is explicit.
• Implement the indexation sequence precisely. Use the prior financial year’s monetary value (B), compute the Darwin CPI averages for the specified quarters (C and D) and form the ratio C/D; then multiply B by the greater of that ratio and 1.03 to obtain A (s 4(2)). Round A down to two decimal places (s 4(3)).
• Apply effective dates correctly. Where the calculated new monetary value increases, implement it from 1 July of the new financial year and apply it only to fees incurred on or after that date (s 5(a)-(b)). Determine the precise date of incurrence under the fee‑creating statute to resolve boundary issues.
• Observe rounding at the fee level. After multiplying the number of revenue units by the unit value, if the result is not a multiple of $1, round down to the nearest dollar (s 3(2)). Ensure accounting and billing systems implement the rounding order: first unit value rounding to two decimals (s 4(3)), then multiply, then final rounding to whole dollars (s 3(2)).
• Publish and record. Ensure the Commissioner issues the Gazette notice before the new monetary value takes effect (s 6(1)). Although failure to publish does not affect the 1 July operation (s 6(2)), publication reduces administrative disputes and facilitates correct billing.
• Plan for regulations. Monitor subordinate legislation under s 7; if regulations are made, they may specify operational or compliance details.

For collection and billing teams

• Update systems annually. Store the monetary value with two decimal precision (s 4(3)), update on an annual cycle, and ensure multiplication and final rounding procedures match statutory requirements (ss 4(2)-(3), 3(2)).
• Reconcile rounding differences. Because the statute rounds down twice, aggregate receipts may be slightly less than unrounded totals. Reconcile ledgers to ensure revenue reporting reflects statutory rounding rather than mathematical totals.
• Check transitional rules. For liabilities around commencement or amendment dates, verify which statutory version applies using ss 9-11 and the endnotes to determine whether changes in legislation affect the particular fee.

For payors and advisers

• Check the incurrence date. Whether the updated unit value applies depends on the date the fee is incurred (s 5(b)). Confirm the relevant fee‑creating Act’s definition of incurrence or liability date to determine which monetary value applies.
• Expect at least 3 per cent annual unit value growth. Because the formula floors the indexation factor at 1.03, the monetary value will increase by at least 3 per cent per year before rounding (s 4(2)). Factor this into budgeting for recurrent fees expressed in revenue units.
• Confirm the published unit value. Consult the Gazette notice from the Commissioner to find the current published monetary value (s 6(1)). Even if notice is not published, the statutory date of effect remains; advisors should nonetheless retain copies of any Gazette notices for audit trails.
• Understand rounding outcomes. For single small fees and aggregate liabilities, statutory downward rounding may reduce payable amounts relative to unrounded arithmetic. Use the statutory rounding procedure when calculating current liabilities (ss 4(3), 3(2)).

For auditors and accountants

• Use statutory figures for compliance testing. When auditing fees expressed in revenue units, apply the statutory conversion steps: published unit value (rounded to two decimals), multiplication by number of units, and final rounding down to nearest dollar (ss 4(3), 3(2)). Document reliance on Gazette notices or the Commissioner’s published figure (s 6(1)).
• Verify transitional application. Confirm that the correct version of the Act (or the repealed Act) was used for fees incurred in different periods, referencing ss 9-11 and the endnotes to determine which amendments applied to particular fee cohorts.

For policy analysts and finance officers

• Model the minimum uplift effect. The 3 per cent floor in s 4(2) creates a deterministic lower bound on the monetary value’s growth; model the fiscal impact of that floor and the effects of the rounding rules (s 4(3), s 3(2)).
• Account for CPI dependence. Remember that the indexation is tied to Darwin CPI averages and that s 4(4) prevents retrospective change to CPI methodology from altering prior unit values. Where CPI volatility is expected, incorporate sensitivity analysis in forecasts.

In all compliance steps, apply the statutory language literally: compute C and D as the averages of the four quarters specified (s 4(2), (5)), round the unit value down to two decimal places (s 4(3)), and round final amounts down to whole dollars where necessary (s 3(2)). Check the relevant fee‑creating Act for any contrary intention that alters the default conversion (s 3(3)).