Pay-roll Tax Act 2002

Sliding scale period. Defined in s 5(3) as the period from 1 July 2018 to 30 June 2023. During this period, rates are not flat but vary according to wage amounts and employer category. After this period, the rate reverts to 5.5 per cent.

Local non-group employer. An employer that is a member of the Pay-roll Tax Assessment Act’s definition of “local non-group employer” - broadly, an employer that pays WA taxable wages and is not a member of a group. The rates applicable to this category use WA taxable wages as the base (ss 6, 7).

Interstate non-group employer. An employer that pays WA taxable wages but is not a local employer and not a member of a group. The rates use Australian taxable wages (which include wages from all Australian jurisdictions) as the base (ss 8, 9). This category faces a default 6.5 per cent rate if no nomination is made under s 23A of the Assessment Act (s 9(b)).

Group employer. An employer that is a member of a group as defined in the Assessment Act. Groups are treated collectively: the rate is determined by the total Australian taxable wages paid by all members of the group (s 10). The designated group employer (DGE) lodges returns on behalf of the group. If the DGE fails to lodge an additional return under s 27(1a) of the Assessment Act, the penalty rate of 6.5 per cent applies (s 10(7)).

Y factor. A fraction used to scale the wage thresholds for the sliding scale. For assessment year calculations: the number of days in the assessment year during which wages were paid or payable by the employer (or for groups, by at least one member) divided by the total number of days in the assessment year (ss 6(4), 8(4), 10(5)). This means a part-year employer has proportionally lower thresholds, reducing the benefit of the lower rate bracket.

Progressive return period. A subdivision of an assessment year for which employers may lodge returns, typically monthly or quarterly. The Act contains separate rate provisions for progressive return periods, using a combined factor of M (months in the return period divided by 12) and P (days in the return period during which wages were paid divided by total days in the period) (s 7(4)). The thresholds are scaled by M x P, and the same formulas apply.

Nomination. Under s 23A of the Assessment Act, an interstate non-group employer may nominate an amount of Australian taxable wages, and the DGE of a group may nominate an amount for the group. These nominations allow the sliding scale rates to be applied on a progressive return basis, rather than defaulting to 6.5 per cent (ss 9(a), 11(a)).

Australian taxable wages vs WA taxable wages. For local non-group employers, the rate is based on WA taxable wages only. For interstate non-group employers and groups, the rate is based on Australian taxable wages (the total wages subject to pay-roll tax in any Australian jurisdiction). This means an employer with large wage bills in other states but small WA wages may still be pushed into a higher rate bracket for WA purposes, because the rate depends on total Australian wages.

The Act contains no definitions of these terms; they are defined in the Glossaries of the Assessment Act and the Administration Act (s 4). Practitioners must read these Acts together.

The Act directly affects every person or entity that pays wages in Western Australia and is liable for pay-roll tax under the Assessment Act. Within that broad group, the sliding scale period creates differential treatment based on the employer’s size, location, and group membership.

Local non-group employers. These are employers that pay WA taxable wages and are not part of a group. They are affected by the sliding scale if their WA taxable wages exceed $100 million (scaled by Y) during any year in the sliding scale period. Below that threshold, they pay the standard 5.5 per cent rate. Between $100M x Y and $1.5B x Y, the rate increases gradually from 5.5 per cent towards 6.5 per cent. Above $1.5B x Y, the rate continues to increase towards 6.5 per cent but at a different formula that starts from a higher base. The practical effect is that very large single employers face a higher effective rate, adding to their labour costs.

Interstate non-group employers. Employers with operations in WA but headquartered elsewhere or with wage liabilities in multiple states. They are affected by the sliding scale based on their total Australian taxable wages, not just WA wages. This means an employer with $200 million in Australian wages but only $5 million in WA wages would still face the sliding scale rate for that $5 million. Moreover, if the employer fails to lodge an additional return (s 27(1) of the Assessment Act) and make a nomination, the default rate is 6.5 per cent (s 8(6)). This creates a compliance burden: interstate employers must submit additional paperwork to access the lower brackets, and failure is costly.

Group employers. All members of a group are treated as a single economic unit for rate purposes. The group’s total Australian taxable wages determine the rate, which then applies to each member’s WA taxable wages. This prevents large businesses from splitting operations into separate legal entities to stay below the $100 million threshold. The DGE must lodge an additional return to get the sliding scale rate; otherwise the default 6.5 per cent applies (s 10(7)). The Y factor for groups is based on days during which at least one group member paid wages, so a group that operates for only part of the year has scaled thresholds.

Employers in Commonwealth places. The Act may be modified under the Commonwealth Places (Mirror Taxes Administration) Act 1999 and the Commonwealth Places (Mirror Taxes) Act 1998 to apply in Commonwealth places in WA. The endnotes in the compilation note insertions of a s 4A for these purposes. Employers in defence bases, airports, or other Commonwealth places may be subject to a modified version of the Act. The practical effect is that those employers must check the prescribed modifications rather than relying solely on this Act as printed.

Employers with no WA taxable wages. The Act does not impose tax on them. However, interstate non-group employers and group members must still consider Australian taxable wages for rate determination even if their WA wages are zero in a period, because the Y factor uses days during which such wages were paid or payable. If an employer has Australian taxable wages in a year but no WA wages, the Act likely imposes no tax, but the rate provisions would be moot.

Duty to pay tax at the correct rate. Every employer liable for pay-roll tax must calculate the rate applicable to their category and wage amount. For the sliding scale period, this requires determining whether the employer is a local non-group, interstate non-group, or group employer, then applying the relevant formula. The rate is imposed by the Act; the Assessment Act handles assessment and collection.

Duty to lodge additional returns. For interstate non-group employers and groups, the Act links the sliding scale rate to compliance with return lodgment obligations. Section 8(6) imposes a 6.5 per cent rate if the employer fails to lodge an additional return under s 27(1) of the Assessment Act within the period set out in s 27(2)(c). Similarly, s 10(7) imposes 6.5 per cent if the DGE of a group fails to lodge an additional return under s 27(1a) within that period. This means the duty to lodge is not merely procedural; failure changes the substantive rate payable.

Right to nominate for sliding scale rates. Interstate non-group employers and groups have the right to nominate an amount of Australian taxable wages under s 23A of the Assessment Act to access the sliding scale rates. Without a nomination, the default rate is 6.5 per cent (ss 9(b), 11(b)). The nomination allows the employer to pay at the rate that would apply if the nominated amount were the actual wages. This right is contingent on timely lodgment of additional returns.

Right to Commissioner’s determination. The penalty rate does not apply if the Commissioner makes a determination under s 23C of the Assessment Act in relation to the employer and the year or part-year (ss 8(7), 10(8)). The nature of that determination is not described in this Act; practitioners must refer to the Assessment Act. This provides a possible relief mechanism for employers who fail to lodge but can show cause.

Duty to calculate Y and M factors. Employers must determine the number of days in the assessment year (or return period) during which wages were paid or payable. This is not the same as the number of days the employer existed; it is the number of days on which at least one employee received wages. For a business that pays wages weekly, this could be 52 days in a year, not 365. The Y factor is days with wages divided by total days. This calculation can be burdensome for employers with irregular pay cycles or casual staff.

Duty of group DGE to aggregate wages. The DGE must calculate total Australian taxable wages paid by all group members to determine the group rate. Each member must provide data to the DGE. The Act does not specify penalties for members that fail to provide information, but the group rate may be adversely affected if data is incomplete.

Rights of small employers. Employers whose WA or Australian taxable wages do not exceed $100M x Y pay only the base 5.5 per cent rate. They are not subject to the progressive rate or the penalty default, provided they are local non-group employers. However, interstate non-group employers and group members with small wages still face the 6.5 per cent default if they do not lodge additional returns and nominate, even if their wages are below the threshold.

The Act itself contains only one penalty mechanism: the imposition of a higher rate of tax for non-compliance with additional return lodgment. This is not a monetary penalty or criminal offence, but a rate penalty that increases the tax payable. It is simple to administer: the Commissioner will apply the 6.5 per cent rate unless the employer shows compliance or obtains a determination under s 23C of the Assessment Act.

For interstate non-group employers, s 8(6) states that if the employer fails to comply with a requirement under s 27(1) of the Assessment Act to lodge an additional return for the assessment year within the period referred to in s 27(2)(c), the rate is 6.5 per cent. There is no discretion given to the Commissioner in the text of this Act; the rate penalty appears automatic upon non-compliance. However, s 8(7) provides an exception if the Commissioner makes a determination under s 23C. This determination may be discretionary.

For groups, s 10(7) imposes the same 6.5 per cent penalty rate if the DGE fails to lodge an additional return under s 27(1a) within the required period. Again, s 10(8) provides an exception for a determination under s 23C.

The required period is defined in s 27(2)(c) of the Assessment Act, not in this Act. Employers must look to that provision for the exact lodgment deadline. Failure to meet that deadline triggers the penalty rate.

The penalty rate of 6.5 per cent is the highest possible rate under the sliding scale, and it matches the rate that would apply to an employer with extremely high wages. For an employer whose wages would normally attract a lower rate, the penalty imposes a real cost. For example, a local non-group employer with $50 million in WA wages would pay 5.5 per cent. If that employer were recategorised as an interstate non-group employer (or could not make a nomination), the penalty rate would cost an additional 1 per cent of taxable wages, or $500,000 on $50 million.

The Act does not provide for any other penalties, such as interest or late filing penalties. Those are in the Taxation Administration Act 2003. The Commissioner may also pursue recovery of unpaid tax and penalties under the Administration Act. The rate penalty under this Act is additional to any general penalties.

Importantly, the penalty rate applies for the entire assessment year or part-year, not just the progressive return period in which the default occurred. This creates a strong incentive to lodge additional returns on time. However, the penalty is avoidable if the Commissioner grants a determination. The criteria for that determination are not in this Act; they are in the Assessment Act s 23C, which the source does not reproduce. Practitioners should review that section carefully.

Enforcement. The Commissioner of State Revenue is responsible for administering pay-roll tax under the Taxation Administration Act. The Commissioner may assess tax, issue amended assessments, and recover tax as a debt due to the Crown. The rate under this Act is integral to the assessment. Disputes about the correct rate would be resolved through the objection and appeal process under the Administration Act.

Pay-roll Tax Assessment Act 2002. Section 3 of this Act provides that the Assessment Act and the Taxation Administration Act are to be read with this Act as if they formed a single Act. This means definitions in the Assessment Act and its Glossary apply to this Act. For example, “WA taxable wages”, “Australian taxable wages”, “local non-group employer”, “interstate non-group employer”, and “group” are all defined in the Assessment Act. The rate formulas in this Act refer to concepts determined under the Assessment Act, such as the requirement to lodge an additional return (s 27), the nomination process (s 23A), and the Commissioner’s determination (s 23C). Without the Assessment Act, this Act is inoperative. Practitioners must read both Acts together to understand the full liability.

Taxation Administration Act 2003. This Act provides the machinery for assessment, collection, objections, appeals, and administrative penalties. The imposition of pay-roll tax under this Act is the substantive obligation; the Administration Act governs how the tax is enforced. For example, if an employer fails to pay tax at the correct rate, the Commissioner will issue an assessment under the Administration Act, and the taxpayer may object. The Administration Act also contains penalty provisions for late payment or incorrect returns, which operate in addition to the rate penalty in this Act.

Commonwealth Places (Mirror Taxes Administration) Act 1999 and Commonwealth Places (Mirror Taxes) Act 1998. The endnotes to the compilation indicate that modifications may be prescribed to apply this Act in Commonwealth places in WA. Section 4A is inserted under those modifications (not shown in the base text). Employers operating in Commonwealth places (e.g., defence bases, airports, post offices) must ensure they are applying the correct modified version of this Act. The modifications may alter the rates or definitions. The source text does not include the modifications, so this interaction is an administrative complexity.

Other state pay-roll tax Acts. This Act is specific to Western Australia. However, the sliding scale for interstate non-group employers and groups uses Australian taxable wages, which includes wages taxable in other states. This means an employer’s liability under this Act is partly determined by wage activities in other jurisdictions. The rate increases as total Australian wages increase, even if WA wages are unchanged. This creates an interaction with other states’ taxing regimes: a decision to expand operations in another state may increase the WA pay-roll tax rate on existing WA wages. This is a form of extraterritorial effect and a disincentive for national expansion for employers with significant WA operations.

Competition and Consumer Act 2010 (Cth). Not directly relevant, but the group provisions in the Assessment Act may reference control and tracing rules that intersect with competition law definitions of associated entities. This Act itself does not interact, but the Assessment Act may.

The Pay-roll Tax Act 2002 was originally enacted as Act No. 47 of 2002 and came into operation on 1 July 2003. The initial rate was 6 per cent for wages paid or payable before 1 January 2005, which suggests a transitional arrangement from the previous pay-roll tax legislation.

The first major amendment was by the Business Tax Review (Taxing) Act 2003 (No. 41 of 2003), which inserted the new Part 2 and set the 5.5 per cent rate for the period from 1 January 2005 to 30 June 2018. This amendment also restructured the Act to refer to the Assessment Act and Administration Act as a single scheme.

The second significant amendment was by the Revenue Laws Amendment (Tax Relief) Act (No. 2) 2004 (No. 83 of 2004), which made changes to the rate provisions, likely to confirm the 5.5 per cent rate.

The most substantial amendment was by the Pay-roll Tax Amendment (Debt and Deficit Remediation) Act 2017 (No. 19 of 2017), which received assent on 13 December 2017 and commenced the next day (14 December 2017) for the operative provisions. This Act inserted Part 3 (Rates of pay-roll tax for period from 1 July 2018 to 30 June 2023), comprising Divisions 1, 2, and 3, and added the sliding scale period. It also amended s 5 to include the three categories of employers for that period and to provide for the return to 5.5 per cent from 1 July 2023. The insertion of Part 3 introduced the progressive rate structure and the Y factor, as well as the penalty rate for non-compliance by interstate and group employers.

No further amendments are listed in the compilation table after 2017. The Act as compiled appears current. The note about the Commonwealth Places modifications suggests that some amendments may have been made via regulations rather than by amending Acts, but those are not reflected in the primary legislation text.

The sliding scale period ended on 30 June 2023. From 1 July 2023, the rate is 5.5 per cent regardless of employer category. This means Part 3 is now of historical interest only for periods up to that date, but practitioners must still consider it for any assessments or disputes relating to the sliding scale period. The Act remains in force for the current rate provision.

The source text provides no information about litigation history. This Act is a taxing statute that has been in force since 2003. Given that it primarily sets rates and relies on the Assessment Act for definitions and machinery, disputes about rates are more likely to arise under the Assessment Act and the Administration Act. The rate formulas in Part 3 are mathematical, so litigation would likely focus on factual questions: whether an employer is a local non-group employer, interstate non-group employer, or group member; the calculation of days on which wages were paid or payable; and whether an additional return was lodged within the required period.

No cases are mentioned in the legislation or its notes. A search of Western Australian tax decisions might reveal objections and appeals concerning the interpretation of Y factor, what constitutes WA taxable wages for interstate employers, or group aggregation. However, this Act is not likely to be directly litigated often, as rate calculations are mechanical given the facts. The penalty rate provision (ss 8(6) and 10(7)) may generate disputes about whether an additional return was lodged “within the period referred to in section 27(2)(c)” of the Assessment Act, and whether the Commissioner’s determination under s 23C was properly exercised. Litigation may also arise on the validity of modifications under the Commonwealth Places mirror taxes provisions.

Practitioners should be aware that the Administrative Appeals Tribunal of Western Australia (or the Supreme Court) may have considered these issues. The absence of citation in the source does not mean there is no case law; it simply means the source does not discuss it. A thorough practitioner would search for cases under the Assessment Act that involve ss 23A, 23C, 27, and definitions of employer categories.

The Y factor is not based on business days. It is the number of days in the assessment year during which WA taxable wages (or Australian taxable wages) were paid or payable, divided by total days. For a business that pays wages only on 52 Fridays each year, the days with wages would be 52, not 365. The threshold of $100M x Y could be dramatically lower for irregular payers. For example, if Y = 52/365 ≈ 0.142, the first threshold is $14.2 million, not $100 million. Employers with high payroll in a single pay period could be pushed into the progressive bracket. This is easily overlooked by employers who assume Y is a simple time fraction based on existence or business activity.

Part-year employers face lower thresholds. The Y factor scales down both thresholds proportionally. An employer that starts business partway through the year, or acquires a workforce, will have a lower threshold. This is intended to be fair, but it can catch employers who operate seasonally. For example, a Christmas casual hiring surge may cause a part-year employer to exceed the reduced threshold even though annualised wages are modest.

Progressive return period rates: M and P factors multiply. Section 7 uses both M (months in return period divided by 12) and P (days in return period with wages divided by total days in return period). For a monthly return period with wages paid on 4 days, M = 1/12, P = 4/30 (assuming 30-day month). The threshold becomes $100M x (1/12) x (4/30) = $100M x 0.0333 x 0.1333 = $444,444. A small employer paying high wages on a few days could exceed this threshold and face the sliding scale rate for that month, whereas on an annual basis they might be below the threshold. This makes rate calculation complex for monthly lodgers.

Penalty rate for interstate/group employers even if wages are below threshold. Sections 9(b) and 11(b) impose 6.5 per cent as the default rate if no nomination is made. This applies regardless of the amount of wages. So an interstate employer with $50,000 in WA wages but no nomination pays 6.5 per cent on that $50,000, whereas a local non-group employer with the same wages pays 5.5 per cent. This creates a permanent disadvantage for interstate employers who do not comply with the nomination process. The compliance burden is real: the employer must lodge an additional return and make a nomination each year.

The nomination must be made; it is not automatic. Simply lodging the additional return may not be enough; the employer must also make a nomination under s 23A of the Assessment Act. Failure to nominate, even if the additional return is lodged, results in the 6.5 per cent rate (s 9(b)). This is a two-step compliance requirement.

Group aggregation overrides individual entity thresholds. Members of a group are not assessed individually. Even if each member pays wages of $10 million, well below $100 million, the group total of $100 million would push the group into the progressive bracket. This prevents splitting, but can surprise businesses that use multiple legal entities for operational reasons. The group definition is in the Assessment Act and may be broader than common control concepts.

Sliding scale period is now expired. For any assessment regarding tax after 30 June 2023, the rate is a flat 5.5 per cent. However, the Act retains Part 3 for historical periods. Employers may still need to use the sliding scale rates for assessments or amendments relating to that period. The formulas in Part 3 remain operative for those purposes. Do not assume that because the period has ended, the rate provisions are irrelevant.

Formulas are not reproduced in text. The source shows blank images for the rate calculations. The actual formulas are not visible in the compilation. Practitioners must refer to the official version or the Government Gazette to see the precise mathematical expressions. Relying on incomplete text may lead to calculation errors.

Commissioner determination exception is not guaranteed. Sections 8(7) and 10(7) refer to a determination under s 23C of the Assessment Act. The source does not set out the criteria for that determination. Employers should not rely on this exception without understanding the Commissioner’s discretion.

Step 1: Determine employer category. First, ascertain whether you are a local non-group employer, an interstate non-group employer, or a member of a group. This requires applying the definitions in the Assessment Act. If you are a group member, identify the designated group employer (DGE). The DGE is responsible for lodging group returns and nominations.

Step 2: Identify the relevant period. For wages paid or payable before 1 July 2023, consider whether the sliding scale period applies (1 July 2018 to 30 June 2023). For wages after that, the rate is simply 5.5 per cent and no further rate calculation is needed.

Step 3: For local non-group employers in sliding scale period. Calculate WA taxable wages paid or payable during the assessment year (or part-year). Determine the number of days in the assessment year during which WA taxable wages were paid or payable. Divide that by the total days in the year to get Y. If wages are $100M x Y or less, rate is 5.5 per cent. If wages exceed $100M x Y but not $1.5B x Y, use the formula in s 6(2) to calculate rate. If wages exceed $1.5B x Y, use s 6(3). For progressive return periods (monthly or quarterly), use s 7 with M and P factors. The formulas produce a rate between 5.5 per cent and 6.5 per cent, to be calculated to 4 decimal places (s 6(5), s 7(5)).

Step 4: For interstate non-group employers in sliding scale period. You must lodge an additional return under s 27(1) of the Assessment Act within the period set out in s 27(2)(c). You must also make a nomination under s 23A(1)(a) of the Assessment Act nominating an amount of Australian taxable wages. If you do both, the rate is determined under s 8(1) to (5) using Australian taxable wages and Y factor based on days Australian taxable wages were paid. If you do not lodge the additional return, the penalty rate of 6.5 per cent applies (s 8(6)). If you lodge but do not nominate, the default 6.5 per cent applies (s 9(b)). To avoid this, ensure you both lodge the additional return and make the nomination on time. Also consider whether the Commissioner may grant a determination under s 23C if you miss the deadline.

Step 5: For groups in sliding scale period. The DGE must lodge an additional return under s 27(1a) within the required period and make a nomination under s 23A(1)(b) of the Assessment Act. The group rate is determined under s 10(1) to (6) using total Australian taxable wages of all group members and Y factor based on days at least one member paid wages. If the DGE fails to lodge the additional return, the penalty rate of 6.5 per cent applies (s 10(7)). If the DGE lodges but does not nominate, the default 6.5 per cent applies (s 11(b)). Group members must cooperate with the DGE to provide accurate wage data.

Step 6: Accurate day counting. Record the actual days on which wages are paid or payable. For most regular pay cycles (fortnightly, monthly), this is straightforward. For casual or irregular payments, you may need to identify each calendar day on which employment existed and wages were earned. The Y factor is a fraction, not a business days count. Use precise figures.

Step 7: Document calculations. Keep records of the Y factor calculation, the wage amounts, and the rate calculation to 4 decimal places. This will be necessary if the Commissioner reviews the assessment. The rate calculation is mechanical; errors in the Y factor can change the rate significantly.

Step 8: Monitor after 30 June 2023. The rate returns to 5.5 per cent flat. No sliding scale applies. However, be aware that the Assessment Act may still require additional returns for interstate and group employers for other purposes. The penalty rate provisions in ss 8(6) and 10(7) cease to be relevant because the sliding scale rate no longer exists, but a 6.5 per cent penalty rate could still be contemplated if the Act is retained? Actually from 1 July 2023, s 5(4) imposes 5.5 per cent. The penalty rate provisions in ss 8(6) and 10(7) are tied to the sliding scale period by references to ss 8(1) and 10(1). It appears that after the sliding scale period, those penalty provisions are inoperative because there is no sliding scale rate to default from. However, the Act remains in force; best practice is to confirm with the Commissioner.

Step 9: Seek professional advice for complex structures. Group definitions, interstate operations, and Commonwealth places modifications require careful analysis. The Act is simple, but the interaction with the Assessment Act creates complexity. The formulas are mathematical but the underlying facts may be contested.