Tax Deductions for IT Professionals (Australia 2025-26)

General information only. Speak with a registered tax agent for advice.

IT professionals — developers, engineers, analysts, architects, and support specialists — tend to have above-average deductions because they use expensive equipment, maintain professional certifications, and frequently work from home. The ATO pays attention to this group because equipment and subscription claims can be significant, and the line between work tools and personal tech use is genuinely blurry. The rule that matters: you can only claim the work portion of any mixed-use item, and you need records to support that split.

What you can claim

Deduction	Typical range	Key rule
Home office running costs	$800–$2,500	Use the ATO fixed rate of 67c/hour for every hour worked from home, covering electricity, internet, and phone running costs. Or claim actual costs with receipts. Keep a diary of hours.
Laptop or desktop computer (work portion)	$400–$2,000	If cost is over $300, depreciate over its effective life (generally 2–3 years for computers). Claim only the work-use percentage — 80–100% for dedicated work machines.
External monitors and peripherals	$100–$800	Second monitors, keyboards, mice, webcams, and headsets used for work. Items over $300 are depreciated.
Internet (work portion)	$200–$600	If you work from home regularly, claim the work percentage of your home internet. 50–70% is common for full-time WFH.
Mobile phone (work portion)	$200–$700	Claim the work percentage of your plan. A 4-week diary supports the apportionment.
Software subscriptions (work portion)	$100–$1,000	IDEs, productivity tools, design software, cloud storage used for work. Apportion if also used personally. Claim the business-use portion only.
Professional certifications	$300–$2,500	AWS, Azure, Google Cloud, Cisco, CompTIA, and similar certifications directly related to your current role are fully deductible. Exam fees, study materials, and prep courses all qualify.
Professional memberships	$100–$400	ACS (Australian Computer Society) membership, IEEE membership, and similar bodies directly related to your current work.
Self-education (role-related only)	$500–$3,000	Courses, bootcamps, and training that maintain or improve skills needed in your current role. A Master’s degree to move into management when you’re currently a developer may not qualify — the ATO applies a “sufficiently connected” test.
Home office equipment depreciation	$50–$500	Desk, ergonomic chair, and other furniture used exclusively for work can be depreciated (not claimed outright if over $300).
Technical books and publications	$50–$300	Textbooks, O’Reilly subscriptions, technical documentation — if directly relevant to your current work.
Tax agent fees	$150–$400	Deductible in the year you pay.

What you cannot claim

• Degrees that facilitate a career change. If you’re currently a support technician and enrol in a computer science degree to become a developer, the ATO may deny the deduction because the course leads to a new vocation rather than maintaining current skills. This is one of the most contested areas for IT workers.
• Gaming equipment and peripherals. A gaming mouse, mechanical keyboard purchased for gaming, or a high-refresh monitor bought primarily for gaming cannot be claimed even if you occasionally do work on the same machine.
• Personal streaming and software subscriptions. Netflix, Spotify, personal cloud storage, or games purchased on Steam are private expenses. Do not include these in work subscription claims even if they’re on the same credit card.
• Home office occupancy costs. Rent, mortgage interest, and rates are occupancy costs — only claimable if your home is genuinely your principal place of business (rare for employees). The fixed-rate method covers running costs only.
• Equipment your employer provides. If your company has issued you a laptop, you cannot also claim a personal laptop as a duplicate.

Worked example

Sophie is a senior software engineer in Sydney earning $145,000 in 2025-26. She works from home 4 days per week and holds AWS and Kubernetes certifications she renewed this year.

Item	Amount
Home office — 67c/hour × 850 hours WFH	$570
Laptop depreciation (90% work, $2,400 cost over 2.5 years = $960/yr)	$864
External monitor (90% work, $650 cost over 3 years = $217/yr)	$195
Internet (60% work, $1,080 annual)	$648
Mobile phone (50% work, $1,200 annual)	$600
AWS certification renewal and exam	$780
Kubernetes certification and study materials	$620
ACS membership	$215
Software subscriptions — IDE and tools (work only)	$380
Technical books	$180
Tax agent fee	$300
Total deductions	$5,352

At Sophie’s marginal rate of 47% (45% + 2% Medicare), these deductions reduce her tax by approximately $2,515.

ATO audit triggers

• 100% equipment claims on obviously mixed-use devices. Claiming a laptop or phone at 100% when it’s your only personal computer raises immediate questions. Unless you have a separate personal device, the ATO expects an apportionment.
• Home office hours that don’t match employment records. Claiming 1,500 WFH hours when your contract shows 5 office days per week is inconsistent. Your claim should align with your actual WFH arrangement.
• Self-education claims for degree programs. The ATO regularly disallows degree costs where the qualification leads to a higher position or different role rather than maintaining current competency.
• Large subscription totals with no breakdown. A single line item for “software subscriptions: $2,000” without individual receipts or a clear list of tools is difficult to defend under audit.

Records you need

• WFH diary noting the dates and hours you worked from home — essential for the fixed-rate method.
• Receipts and invoices for all equipment and subscription purchases, showing the date, supplier, and amount.
• Depreciation schedule for any item over $300 that you’re depreciating across multiple years.
• Usage diary or calculation notes for phone and internet apportionment — a 4-week sample diary is acceptable.
• Certification enrolment confirmations showing the course name, date, and connection to your current role.

Key takeaways

• The home office fixed rate (67c/hour) is simple and effective for most WFH tech workers — log your hours through the year rather than estimating at tax time.
• Equipment depreciation is your second-biggest category. Keep purchase receipts and note your work-use percentage at the time of purchase.
• Certifications are fully deductible if they maintain or improve skills for your current role — renewing AWS, Azure, or Cisco credentials is a clean claim.
• Self-education for career advancement into a new role is a grey area — get advice from a tax agent before claiming a degree program.

Sources

• ATO: Deductions you can claim
• ATO: Occupation and industry specific guides

Next step

• Estimate your refund with the Tax Return Calculator
• Model taxable income in the Income Tax Calculator

Occupation guides

• Tax for IT Professionals — devices, software, WFH, training
• Tax for IT Contractors — PSI, contractor vs employee, super
• Tax for Web Developers — hosting, hardware, contractor status
• Tax for Data Scientists — cloud compute, software, conferences