Tax for Australian Mechanics, Panel Beaters and Auto Electricians

Australian mechanics, panel beaters, and auto electricians pay income tax on trading profit (sole trader) or company tax at 25% base rate (Pty Ltd). GST registration is compulsory at $75,000 turnover, which most workshops hit quickly given combined labour and parts revenue. Parts inventory is trading stock requiring a 30 June stocktake. Workshop equipment qualifies for instant asset write-off up to $20,000 (2025-26) or depreciation through the small business pool. TPAR lodgement may apply if you pay subcontractors for construction-adjacent work.

Last reviewed: 27 May 2026

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Australian auto repair businesses carry a heavier compliance load than most trades. State-based repairer licensing ties your right to trade to qualified staff and council-approved premises. Parts inventory is trading stock requiring a year-end stocktake. Workshop equipment (hoists, spray booths, diagnostic scanners) spans both Division 40 depreciation and Division 43 capital works. Environmental compliance costs for waste oil, solvents, batteries, and tyres are ongoing operating expenses. Add GST (which most workshops hit almost immediately given combined labour and parts turnover), apprentice wage obligations, and ATO cash-economy benchmarking specific to the automotive industry, and the tax position requires disciplined record-keeping from day one.

What business structure do Mechanics, Panel Beaters and Auto Electricians use?

The common patterns for Mechanics, Panel Beaters and Auto Electricians are: Sole trader: simplest setup, ABN only, suits one-person mobile mechanics or small workshop operators under roughly $100k profit, Pty Ltd company: limited liability for workshop operations, access to 25% base rate entity tax, salary-plus-dividend extraction from around $100k+ profit, Partnership or trust: used by family workshop businesses for income splitting and asset protection (s.100A risk applies to non-arm's-length distributions). Workshop premises sometimes held in a separate trust or SMSF for asset protection. The right structure depends on revenue, liability exposure, and personal circumstances, covered below.

How does TPAR apply to Mechanics, Panel Beaters and Auto Electricians?

Mechanics, Panel Beaters and Auto Electricians paying subcontractors for building and construction services may need to lodge a Taxable payments annual report. See the dedicated TPAR mechanics below.

How do I handle parts inventory as trading stock?

Parts on the shelf (filters, oils, brake pads, bulbs, wiring, body panels, paint tins held for resale or use in repairs) are trading stock. You must account for stock movements and value closing stock at 30 June each year. Three valuation methods: cost, market selling value, or replacement value. Most small workshops use cost because it ties directly to supplier invoices. You must apply the same method consistently year to year. A basic stocktake at 30 June is required. For workshops with hundreds of part lines, a systematic approach (count by bay or shelf, reconcile to purchase records) saves time. Stock written off as obsolete or damaged reduces the closing stock value and increases your deduction. Parts purchased and fitted to a customer's vehicle in the same financial year are cost of goods sold, not closing stock. Only parts still on the shelf at 30 June need to be counted.

Trading stock must be valued at year-end using cost, market selling value, or replacement value. A stocktake at 30 June is required. (ITAA 1997 Division 70 (trading stock); ATO guidance ATO trading stock guidance)

What depreciation rules apply to workshop equipment?

Workshop equipment falls into two categories depending on whether it is plant and equipment (Division 40) or part of the building structure (Division 43). Division 40 covers hoists, scan tools, wheel balancers, tyre machines, compressors, welders, chassis alignment jigs, oscilloscopes, infrared drying lamps, and portable benches. For small business entities (turnover under $10 million), assets costing less than $20,000 each (2025-26) qualify for instant asset write-off. Assets at $20,000 or above go into the simplified depreciation pool: 15% in the first year, 30% in subsequent years. If the pool balance falls below $20,000 at year-end, the whole pool is written off. Division 43 covers structural building elements: the workshop building itself, concrete slab, walls, fixed mezzanines. These are depreciated at 2.5% per year over 40 years. A spray booth that is permanently integrated into the building structure may have a Division 43 component for the construction and a Division 40 component for the mechanical extraction and heating systems.

Plant and equipment is depreciated under Division 40 (instant write-off under $20,000 for SBE, or pooled). Building structures are depreciated under Division 43 at 2.5% per year. (ITAA 1997 Division 40 and Division 43; ATO guidance ATO depreciation and capital allowances guide)

When does TPAR apply to an auto repair business?

Pure mechanical, panel beating, and auto electrical businesses working directly for the public are generally outside the TPAR net. TPAR applies to businesses primarily in building and construction that pay subcontractors for construction services. The risk increases where a workshop is effectively subcontracting into construction-adjacent work: a mobile mechanic servicing a construction fleet on-site, a panel shop doing vehicle refit work for a builder, or an auto electrician wiring fleet vehicles for a construction company. In those cases, the services may be captured as building and construction for TPAR purposes. If TPAR applies, you must lodge a Taxable Payments Annual Report by 28 August each year listing each contractor's ABN, gross payments, and GST component. The ATO cross-matches TPAR data against subcontractor returns. Most suburban workshops servicing the general public will not need to lodge TPAR, but those contracting heavily to construction businesses should check their position.

Businesses primarily in building and construction that pay contractors for construction services must lodge TPAR by 28 August each year. (TAA 1953 Schedule 1 Division 396; ATO guidance ATO building and construction TPAR guide)

What are the ATO cash-economy benchmarks for automotive businesses?

Motor vehicle repair is one of the ATO's cash and economy focus industries. The ATO publishes small business benchmarks specific to the automotive sector that compare your reported income and expenses against similar businesses based on turnover range, location, and business type. Large variances from the benchmark, high proportions of cash takings, or unusually low reported profit margins attract ATO attention. Red flags include not issuing invoices, offering discounts for cash (no receipt), failing to declare cash jobs, and using personal bank accounts for business takings. Best practice: use point-of-sale or workshop management software (such as Autotrader, Workshop Software, or Infomedia), maintain a separate business bank account, and ensure every job has a documented invoice. Clean record-keeping is not just a tax compliance advantage; it makes it easier to win fleet contracts, insurer-approved repairer status, and manufacturer approvals.

The ATO benchmarks automotive businesses on income and expense ratios. Significant variances from the benchmark trigger compliance activity. (ATO small business benchmarks (automotive); ATO guidance ATO cash economy and small business benchmarks guide)

Contractor vs employee: the written contract is decisive

The High Court reset the contractor/employee test in 2022. Where there is a comprehensive written contract that is not a sham, classification turns principally on the rights and obligations established by that contract — not on the day-to-day conduct of the parties. Get the engagement contract right at the start; do not rely on post-contract behaviour to recharacterise the relationship later. This matters because misclassification exposes the engager to PAYG withholding shortfalls, super guarantee charge (with the contractor-deemed-employee extension under SGAA 1992 s 12(3)), and payroll tax. It also affects whether the worker can deduct business expenses and whether PSI rules engage.

Contractor vs employee classification is determined principally by the rights and obligations in the written contract, not by post-contract conduct. (CFMMEU v Personnel Contracting Pty Ltd [2022] HCA 1; ZG Operations Australia Pty Ltd v Jamsek [2022] HCA 2 (companion case); ATO guidance TR 2023/4 (employee vs independent contractor))

Home running costs: PCG 2023/1 fixed-rate vs actual cost

Most workers in this trade do some admin from home — quoting, invoicing, scheduling, BAS prep. From 1 July 2024 the ATO fixed-rate method is 70c per hour worked from home and covers electricity, gas, internet, mobile, stationery and computer consumables. You cannot also claim those bills separately under the fixed rate. You can still separately depreciate office furniture and equipment used at home. FY 2024-25 and FY 2025-26 rate: 70c/hr. FY 2022-23 and FY 2023-24 rate: 67c/hr. The fixed rate requires a contemporaneous record of actual hours worked from home — a timesheet, calendar or app log. Estimates and four-week samples are no longer accepted for the fixed rate method (they remain valid for the actual cost method).

The fixed-rate method for home office running costs is 70c per hour from 1 July 2024 and requires a record of actual hours worked from home. (PCG 2023/1 (as amended); ITAA 1997 s 8-1; ATO guidance TR 93/30; TR 2024/3)

Allowable expenses

Category	Examples	Tax treatment
Workshop rent and outgoings	Lease payments, water rates, council rates, electricity, gas, outgoing levies	Deductible as operating expense to the extent space is used to earn business income
Tools and equipment	Hand tools, hoists, scan tools, wheel balancers, tyre machines, compressors, welders, oscilloscopes, chassis jigs	Instant asset write-off up to $20,000 (2025-26) for SBE; assets above $20,000 into simplified depreciation pool (15% first year, 30% thereafter); building-integrated items under Division 43
Parts and materials (trading stock)	Filters, oils, brake pads, panels, paint, wiring, bulbs, coolant, solvents	Cost of goods sold for parts fitted in-year. Parts on shelf at 30 June are closing stock valued at cost, market selling value, or replacement value
Environmental and waste disposal	Used oil collection, battery recycling, tyre disposal, solvent recovery, spill kits, EPA permit fees, air-quality monitoring	Ongoing compliance costs are deductible operating expenses. Capital environmental assets (separation tanks, permanent extraction systems) depreciated under Division 40 or 43
Licences and registrations	State motor vehicle repairer licence, council DA fees for ongoing trading, industry association membership	Deductible as ongoing trade licence fees. Initial DA and setup costs relating to establishment of premises are capital
Insurance	Public liability, professional indemnity, workers compensation, tool and equipment cover, motor vehicle (business use %)	Deductible as business operating expense
Apprentice costs	Apprentice wages, superannuation contributions, workers compensation premiums, training block release costs	Wages and on-costs deductible. Government apprenticeship incentive payments received are assessable income
Vehicle (mobile mechanics/auto electricians)	Fuel, servicing, registration, insurance, tyres, finance interest, decline in value of work ute or van	Logbook method (actual costs x business-use %) or cents-per-km (88c/km, max 5,000 km). Car limit $69,674 applies to passenger vehicles; utes over 1-tonne payload are not subject to the car limit
Phone, software, admin	Mobile phone (business %), workshop management software (Autotrader, Workshop Software), accounting software (Xero, MYOB), parts catalogues	Deductible, apportioned to business use percentage

Vehicle and travel costs

Mobile mechanics and auto electricians typically have high business-use percentages for their work vehicle and should use the logbook method. Keep a 12-week representative logbook, then apply the business-use percentage to all running costs for the year. Workshop-based operators who drive between the shop and suppliers or to pick up customer vehicles should also track business kilometres. A ute or van with payload over 1 tonne avoids the $69,674 car depreciation limit. For incorporated businesses, the vehicle is a company asset and running costs are claimed directly, but fringe benefits tax arises on any significant private use.

Capital allowances and equipment

The instant asset write-off threshold for small business entities (turnover under $10 million) is $20,000 per asset for 2025-26. A $12,000 four-post hoist, a $6,500 diagnostic scan tool, or a $3,000 set of wheel alignment equipment can each be written off in full in the year of purchase. For assets above $20,000 (a $35,000 spray booth, for example), the simplified depreciation pool applies: 15% in the first year, 30% in subsequent years. If the pool balance drops below $20,000 at year-end, the entire pool is written off. Workshop building costs (slab, walls, roof) are not eligible for instant write-off and must be depreciated at 2.5% per year under Division 43.

Worked example

Damo — Brisbane, QLD

sole trader mechanic operating a suburban workshop (QLD licensed) (FY 2025-26)

Annual revenue $185,000 from a mix of general servicing, brake and suspension work, and pre-purchase inspections. Parts cost of goods sold $42,000. Workshop lease and outgoings $18,000. New hoist and diagnostic scanner $17,500 (instant write-off). Ongoing tools and consumables $3,200. Public liability and workers compensation insurance $4,800. QLD repairer licence renewal $420. Waste oil and tyre disposal $1,600. Apprentice wages and super $38,000. Phone and Workshop Software subscription $2,100 (90% business). Work ute running costs $7,800 (logbook shows 75% business use). Accounting fees $1,500.

Deductions: parts $42,000 + workshop lease $18,000 + hoist/scanner $17,500 + tools/consumables $3,200 + insurance $4,800 + licence $420 + waste disposal $1,600 + apprentice costs $38,000 + phone/software ($2,100 x 90%) $1,890 + ute ($7,800 x 75%) $5,850 + accounting $1,500 = $134,760 total deductions.

  Taxable income: $185,000 - $134,760 = $50,240.

  Income tax: $0 on first $18,200. $26,800 x 16% = $4,288. $5,240 x 30% = $1,572. Total income tax = $5,860.

  Medicare Levy: $50,240 x 2% = $1,005.

  Total tax: $5,860 + $1,005 = $6,865. Effective rate: 13.7%.

  Damo should also consider a personal deductible super contribution: a $10,000 contribution reduces taxable income to $40,240, dropping the marginal rate to 16% for most of the remaining income. The contribution is taxed at only 15% inside super, saving roughly $1,500 net.

Common ATO audit triggers for Mechanics, Panel Beaters and Auto Electricians

Cash jobs not declared: ATO cross-references bank deposits, lifestyle indicators, and industry-specific benchmarks for automotive businesses
Trading stock discrepancies: large parts purchases without corresponding closing stock or cost-of-goods-sold entries
High vehicle claims for mobile operators without a logbook to substantiate business-use percentage
Mixing personal and business bank accounts, particularly where cash receipts are deposited into personal accounts
Workshop equipment claims without receipts or an asset register
Repeated business losses claimed against other income without meeting non-commercial loss tests (Division 35)

Frequently asked questions

Do I need to do a stocktake at the end of each financial year?+

Yes. If parts inventory is a material part of your business (and for most workshops it is), you must value closing stock at 30 June. Count what is on the shelf, value it at cost (most common), market selling value, or replacement value, and use the same method consistently each year. Parts fitted to customer vehicles during the year are cost of goods sold, not closing stock. A systematic count by bay or shelf reconciled against purchase records is the most efficient approach.

Can I claim the full cost of a new hoist or spray booth this year?+

If you are a small business entity (turnover under $10 million) and the asset costs less than $20,000, you can claim the full cost as an instant asset write-off in 2025-26. For assets at $20,000 or above, the cost goes into the simplified depreciation pool (15% first year, 30% thereafter). A spray booth permanently integrated into the building may have a Division 43 structural component depreciated at 2.5% per year and a Division 40 mechanical component (extraction fans, heating elements) eligible for the pool or instant write-off.

What environmental compliance costs can I deduct?+

Ongoing costs are fully deductible: waste oil collection, battery recycling fees, tyre disposal levies, solvent recovery, spill kits, PPE, air-quality monitoring, EPA permit renewals, and waste contractor fees. Capital environmental assets like permanent oil-water separation tanks or building-integrated extraction systems are depreciated under Division 40 (plant) or Division 43 (structural), not claimed as immediate deductions.

Are government apprenticeship incentive payments taxable?+

Yes. Any payments you receive under Australian Apprenticeships programs (wage subsidies, completion bonuses, commencement incentives) are assessable income and must be included in your tax return. The apprentice wages, super contributions, and workers compensation premiums you pay are deductible business expenses. State-level payroll tax concessions for apprentice wages may also apply depending on your total payroll and state thresholds.

Last reviewed: 27 May 2026