For educational purposes only. Not tax, legal, or financial advice. Tax laws change frequently. Consult a registered tax agent or CPA for your specific situation.
Australian IT contractors pay income tax on trading profit (sole trader) or company tax at 25% base rate (Pty Ltd), but the PSI rules under Part 2-42 ITAA 1997 can attribute company profits straight back to the individual if no Personal Services Business test is passed. GST registration is compulsory at $75,000 turnover. The results test (paid for a specific result, own tools, defect liability) is the primary safe harbour, but most hourly-billing IT contractors fail it.
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IT contracting in Australia sits squarely in the ATO's crosshairs for Personal Services Income enforcement. The PSI rules under Part 2-42 ITAA 1997 determine whether your company or trust structure delivers any tax benefit at all, or whether net income is attributed straight back to you as an individual. Most IT contractors bill by the hour, use client-provided systems, and carry no contractual defect liability, which means the results test (the primary safe harbour) usually fails. Understanding how to genuinely pass a PSB test, or restructure contracts so the results test applies, is the single highest-value tax decision for an Australian IT contractor. Beyond PSI, the key obligations are income tax on trading profit (sole trader) or 25% base rate entity tax (Pty Ltd), GST registration at $75,000 turnover, and the home office deduction at 70 cents per hour for remote workers.
What business structure do IT Contractors and Developers use?
The common patterns for IT Contractors and Developers are: Sole trader: simplest setup, ABN only, suits contractors under roughly $100k profit who accept that PSI attribution is unavoidable, Pty Ltd company: limited liability for contract disputes and IP risk, access to 25% base rate entity tax, but PSI rules can negate the benefit entirely if no PSB test is passed, Trust or partnership: occasionally used for family income splitting, but ineffective for PSI income unless a PSB test is satisfied (s.100A risk applies to non-arm's-length distributions). The right structure depends on revenue, liability exposure, and personal circumstances, covered below.
How do the PSI rules apply to IT contractors?
Personal Services Income is income that is mainly a reward for your personal efforts or skills. If more than 50% of what you receive for a contract is for your own labour, skills, or expertise, the income is PSI, regardless of whether you operate as a sole trader, company, or trust. Part 2-42 ITAA 1997 can look through your entity and treat the profit as the individual's income.
IT contracting is a key ATO focus sector. The consequences when PSI rules apply: net PSI is attributed to the individual whose efforts generated it (even if earned through a company or trust), income splitting to family members is ineffective, retaining profits in a company at lower tax rates is high-risk, and certain business-structure deductions are denied.
You can still deduct: professional indemnity insurance, home office running costs, equipment depreciation, software subscriptions, and training that maintains current skills. You cannot claim wide business-structure deductions aimed at creating artificial entity profits.
The ATO's PCG 2025/5 signals increased scrutiny with a transition period running through to 30 June 2027. The message is clear: fix your structure now.
Income mainly rewarding personal efforts or skills is PSI. If no PSB test is passed, income is attributed to the individual regardless of entity structure, and income splitting is ineffective.(ITAA 1997 Part 2-42 (Divisions 84-87); ATO guidance ATO Personal Services Income guidance, PCG 2025/5)
Why do most IT contractors fail the results test, and how can you pass it?
The results test is the primary safe harbour. If you pass it, you are automatically a Personal Services Business and PSI rules do not apply. All three conditions must be true for at least 75% of your PSI:
1. You are paid to produce a specific result or outcome (not paid for time).
2. You provide your own tools and equipment to do the work.
3. You are liable to fix defects at your own cost.
Most IT contractors fail on all three. Hourly or daily billing (not deliverable-based) fails condition 1. Using client-provided laptops, repositories, cloud environments, and toolchains fails condition 2. No contractual obligation to fix defects after the engagement ends fails condition 3.
To genuinely pass: restructure contracts as fixed-price, deliverables-based engagements (a feature set, deployment, or migration with milestone payments). Supply your own primary tools (laptop, development environment, cloud accounts). Include warranty and defect clauses that make you responsible for rectifying defects at your own cost within a defined warranty period. These must reflect commercial reality. The ATO can apply Part IVA (general anti-avoidance) if the dominant purpose is tax avoidance rather than genuine commercial restructuring.
The results test requires payment for a specific result (not time), use of own tools, and liability for defects. Passing it means PSI rules do not apply.(ITAA 1997 s 87-18 (results test); ATO guidance ATO PSI decision tool and IT contractor examples)
How does the home office deduction work for remote IT contractors?
The fixed rate method allows 70 cents per hour worked from home. This covers electricity, gas, phone, internet, stationery, and computer consumables. You must keep a record of all hours worked from home across the full year (a timesheet, calendar, or time-tracking app). Estimates are not accepted. You need at least one invoice or receipt for each cost category covered by the fixed rate.
You can separately claim decline in value of equipment not covered by the fixed rate: desks, ergonomic chairs, monitors, and peripherals. These are claimed on top of the hourly rate.
The actual cost method is the alternative: claim the work-related portion of actual running costs (electricity, internet, phone, decline in value of furniture and equipment) based on reasonable apportionment using floor area, time, or usage records.
Occupancy expenses (mortgage interest, rent, council rates) are generally not deductible unless the home office is a dedicated place of business meeting the ATO's strict criteria. Claiming occupancy can affect the CGT main residence exemption. If PSI rules apply, occupancy expenses are further restricted to what standard working-from-home rules allow.
The fixed rate method allows 70c per hour for home office running costs, with equipment depreciation claimable separately. Occupancy expenses require a dedicated place of business and trigger CGT implications.(ITAA 1997 s 8-1 (general deduction) and Division 118 (main residence exemption); ATO guidance ATO working from home deduction guidance)
When do IT contractors need to register for GST?
GST registration is mandatory once annual turnover reaches $75,000. Turnover means gross business income, not profit. For IT contractors billing $800-$1,500 per day, the threshold can be reached within two to three months of full-time contracting.
Voluntary registration below the threshold lets you claim GST credits on equipment, software, and running costs. The trade-off: you charge 10% GST on every invoice and lodge BAS quarterly or monthly.
Services supplied to clients outside Australia can be GST-free where the recipient is outside Australia and the service is used or enjoyed outside Australia. Software development for an overseas business whose staff are offshore and who deploy the software outside Australia qualifies. If the overseas client has Australian operations that benefit from the work, GST may still apply.
Correctly classifying GST-free exports avoids both over-charging (losing competitiveness against offshore contractors) and under-charging (unexpected GST liability on audit).
GST registration is compulsory at $75,000 annual turnover. IT services to overseas clients can be GST-free if the recipient is outside Australia and the service is used or enjoyed outside Australia.(A New Tax System (Goods and Services Tax) Act 1999 s 23-15 and Division 38; ATO guidance ATO GST registration guide and cross-border GST guidance)
The unrelated clients test (s 87-20 ITAA 1997)
Your PSI is treated as Personal Services Business income — and avoids the Part 2-42 PSI deduction restrictions — if you satisfy ANY of the results test, the unrelated clients test, the employment test, or the business premises test. The unrelated clients test is the most common to satisfy and the easiest to get wrong.
Two conditions must BOTH be met.
(1) Income source — the 80% rule. No single client (and its associates) provides 80% or more of your PSI for the income year. Worked: PSI of $165,000 from Client A ($120,000) + Client B ($45,000) = Client A is 72.7% of PSI. Pass.
(2) How you obtained the work — the advertising / offer test. You obtained the work by (a) making offers to the public or a section of the public (e.g. a website, LinkedIn presence, recruiter listings, formal tender response); or (b) advertising your services to the public. Word-of-mouth referrals on their own do NOT satisfy this limb (see PCG 2025/5 for the Commissioner's current risk-zone approach). A registered ABN, a public website with a contact form, and an active LinkedIn presence soliciting work substantively help. A single referral from a former colleague does not.
Where this trips people up: if one client drifts above 80% mid-year because another engagement slipped, you fail the test for the WHOLE year — not pro rata. Diversify client mix BEFORE 30 June, not after.
Personal services income is treated as Personal Services Business income (escaping the PSI deduction restrictions) where the unrelated clients test is satisfied — both the 80% income-source limb and the public-offer/advertising limb must be met.(Part 2-42 ITAA 1997, ss 87-15 and 87-20. PCG 2025/5 (risk-zone guidance).)
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)
Instant write-off up to $20,000 per asset (SBE 2025-26). Items $300 or less: immediate deduction. Above $20,000: depreciate over effective life (laptops 2 years, desktops 4 years). Apportion for private use
Fixed rate method (70c/hour worked from home) or actual cost method. Equipment depreciation claimable separately on top of the fixed rate
Professional development
AWS/Azure/GCP certifications, security certifications (CISSP, CEH), conference tickets, online courses in current tech stack
Deductible if maintaining or improving skills currently used to earn income. Retraining into a new profession is not deductible
Insurance
Professional indemnity, cyber insurance, public liability, income protection
Deductible as business operating expense
Professional memberships
ACS (Australian Computer Society) membership, IEEE, ACM, industry group fees
Deductible as professional membership fees
Phone and internet
Mobile phone plan, home internet (business portion), mobile data
Deductible, apportioned to business-use percentage. If using the fixed rate home office method, phone and internet are already included and cannot be claimed separately
Travel
Flights to client sites, accommodation for interstate engagements, taxis and rideshare to client offices
Fully deductible when directly related to earning income. Partly private trips must be apportioned. Home-to-regular-workplace travel is generally not deductible
Accounting and legal
Tax return preparation, BAS lodgement, contract review, ABN/company registration costs
Deductible as business operating expense
Vehicle and travel costs
Many IT contractors work predominantly from home or a single client site, which limits vehicle claims. Home-to-a-regular-client-office is generally non-deductible commuting. However, travel between multiple client sites on the same day, travel to a client site that is not your regular workplace, and travel carrying bulky equipment that cannot be stored at the workplace are all deductible. Use the cents-per-km method (88c/km, max 5,000 km, capping the deduction at $4,250) for occasional travel, or the logbook method if you regularly visit multiple sites. IT contractors travelling interstate for project work should claim flights and accommodation directly rather than through the vehicle method.
Capital allowances and equipment
The instant asset write-off for small business entities (turnover under $10 million) is $20,000 per asset for 2025-26. A $3,500 MacBook Pro, a $1,800 ultrawide monitor, a $600 ergonomic chair, and a $400 mechanical keyboard can each be written off in full. Laptops have a 2-year effective life; desktop computers have 4 years. For assets above $20,000 (uncommon for individual IT equipment but possible for a high-spec workstation build or server), the simplified depreciation pool applies: 15% in the first year, 30% in subsequent years. Items costing $300 or less with more than 50% business use can be immediately deducted regardless of SBE status.
Common ATO audit triggers for IT Contractors and Developers
PSI income split to family members through a Pty Ltd or trust without genuinely passing a PSB test
Profits retained in a company at the 25% rate when PSI rules apply (triggering attribution to the individual at marginal rates)
Home office claims using the fixed rate method without a contemporaneous record of hours worked from home
Equipment depreciation claimed at 100% business use without evidence of apportionment for personal use
Large training and conference claims for courses unrelated to the contractor's current income-earning activity
Contractor-vs-employee misclassification (ATO and Fair Work examine the whole relationship, not just the contract label)
Frequently asked questions
Does TPAR apply to IT contracting businesses?+
No. TPAR (Taxable Payments Annual Report) applies to businesses primarily in building and construction, cleaning, courier, road freight, IT services, and security. However, for IT services specifically, the ATO confirmed that the TPAR reporting obligation for payments made by businesses in the IT industry was removed from the 2024-25 income year onward. If your business is purely IT contracting and development, TPAR does not apply to payments you make to subcontractors.
Can I retain profits in my Pty Ltd at the 25% company rate instead of paying myself a salary?+
Only if PSI rules do not apply. If your income is PSI and you have not passed a PSB test, the ATO attributes the net income to you as an individual at your marginal tax rate, regardless of the company structure. Retaining profits in the company under these circumstances is high-risk and can trigger amended assessments with interest and penalties. If you genuinely pass a PSB test (typically the results test or the unrelated clients test), the company structure works as intended: pay yourself a reasonable salary, retain surplus at 25%, and distribute franked dividends when appropriate.
What happens if I receive equity or stock options from a client?+
Division 83A ITAA 1997 governs Employee Share Schemes. Even if you are technically a contractor, ESS rules can apply when you receive equity in connection with services provided. Taxed-upfront schemes assess the discount in the year of acquisition. Deferral schemes defer tax until a deferred taxing point (restrictions lift, employment ceases, or a set period passes). The start-up concession, available for qualifying early-stage companies, can effectively eliminate upfront tax and push the gain into the CGT regime on eventual sale. The issuing company's ESS statement will guide your reporting obligations.
Is my AWS or Azure certification deductible?+
Yes, provided the certification maintains or improves skills you currently use to earn assessable income. An AWS Solutions Architect certification for a developer already working with AWS is deductible. A certification in an entirely new field unrelated to your current contracting work (for example, a software developer paying for a real estate licence) is not deductible because it enables a new income-earning activity rather than improving an existing one.