Engineer Tax Deductions 2025-26: What You Can and Can't Claim

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

Engineers have one of the wider deduction profiles of any occupation the ATO publishes a guide for — tools, protective equipment, professional registration, and overnight site travel are all genuinely claimable. But the same guide contains a detail that catches out even senior engineers: when the ATO needs an example of “conventional clothing” that can never be deducted no matter how consistently you wear it to work, it names business attire worn by engineers specifically. The other recurring trap is registration. Getting registered as an engineer in the first place is a private cost of landing the job; renewing that registration once you’re employed is a legitimate deduction. Mixing the two up — or claiming the wrong side of the home-to-work travel line — is where most engineer tax returns go wrong.

This guide works through what the ATO’s own guidance for engineers actually allows, using the ATO’s own worked examples where it gives one — a calliper or scientific calculator for tools, an electrical engineer’s safety glasses and gloves for protective items, and an electrical engineer’s three-night interstate trip for overnight site travel. Where the source guidance is silent on a point, this article stays silent too, rather than filling the gap from general knowledge.

What you can claim

Dollar ranges above are indicative of what engineers commonly spend — they are not ATO limits. Claim what you actually incurred and can substantiate.

What you cannot claim

• Business attire. Suits, shirts and other everyday clothing are conventional clothing — everyday clothing worn by people regardless of occupation. The ATO names business attire worn by engineers as its own textbook example. It stays private even if your employer expects a professional standard of dress and you only wear it at work. The exception is genuine protective or occupation-specific clothing — hi-vis, PPE, or a uniform that is either compulsory or registered on the Register of Approved Occupational Clothing — which sits in a different category from ordinary business wear and can be claimed, along with its laundry.
• Normal trips between home and your regular workplace. Private even if you live a long way away, work outside normal business hours, or come in for weekend or early-morning shifts. Carrying tools doesn’t change this by itself — the narrow bulky-tools exception has its own conditions, starting with the tools being essential to your duties.
• The initial cost of your engineer registration, licence, permit or card. Whatever you paid to become registered or licensed in order to get your job — the ATO’s own example is a forklift licence — is a private cost of getting employed, not of doing the job. Only the ongoing renewal is deductible.
• Your driver’s licence. Not deductible even where holding one is a condition of your employment. Only the additional cost of a special licence or endorsement needed for your duties, such as a heavy vehicle permit, can be claimed.
• Prescription glasses and contact lenses. Private even though you need them to work, because they correct a personal vision condition rather than protect you from a work hazard. Only protective eyewear — anti-glare, photochromatic, safety glasses or goggles — is deductible.
• Child care. Including school holiday programs and before and after school care. It has no direct connection to earning your income, however necessary it is to your ability to work.
• Entertainment and social functions. Work breakfasts, lunches and dinners, sporting events, gala nights, concerts and cocktail parties — even where attendance is compulsory or work is discussed at the event. Travel to and from these functions is also excluded.
• Food and drink during normal working hours. Private, even if you receive a meal allowance. The overtime meal exception is narrow and depends on the allowance being paid under an award and shown as a separate amount on your income statement.
• Fines and penalties. This includes a speeding fine picked up while driving to a client meeting — the work connection makes no difference.
• Removal and relocation expenses. Not deductible whether the move to a new work location is a condition of your existing job or you’re taking up a new one.
• General newspapers and magazines. Only content with a direct connection to your specific engineering duties is deductible; general-interest news and current affairs stay private, even if you read them to stay broadly informed.
• Anything your employer paid for or reimbursed. Including tools, protective equipment, phone usage, or your home office setup.

Worked example

David is a civil engineer in Brisbane earning $115,000 in 2025-26. He splits his week between the design office and construction sites, occasionally reviews drawings from home, and travelled interstate for three nights to oversee an on-site project.

David’s taxable income puts him in the $45,001–$135,000 bracket, so his marginal rate is 30% plus the 2% Medicare levy — 32% combined. At that rate, $2,800 of deductions reduces his tax by exactly $896. Run your own numbers through the Tax Return Calculator.

Note what is missing from that table: phone, internet, electricity and stationery. David used the 70c fixed rate for the hours he genuinely worked from home, and that rate already bakes those costs in — claiming them again on top would be a double deduction. His tools, protective gear and registration renewal all stay in, because none of them are covered by the fixed rate. Compare both working-from-home methods in the Work From Home Deductions Calculator.

ATO audit triggers

• Claiming business attire or its laundry. Engineers claiming a suit, shirts or dry-cleaning for them is a known error pattern precisely because the ATO uses business attire worn by engineers as its own example of non-deductible conventional clothing.
• Claiming the initial registration cost instead of only the renewal. The distinction between “cost of becoming registered” (private) and “cost of staying registered while employed” (deductible) is explicit in the ATO’s guidance and easy to get backwards.
• Home-to-work travel justified only by “I carry my tools.” The bulky-tools exception has real conditions attached — carrying a laptop bag or a small toolkit that could reasonably be left at work doesn’t meet the bar on its own.
• Claiming both the WFH fixed rate and a separate phone or internet bill. The 70c rate is designed to cover them; claiming both is arithmetically visible in your return.
• 100% work use on tools, calculators or devices you also use privately. Apportion, and keep a record supporting the percentage you claim.
• Phone, data or internet claims over $50 with no itemised bill. Below $50 total the ATO doesn’t require records; above it you need the bill and evidence of your work-use share.
• Professional publications claimed without a clear work connection. A subscription is only deductible where the content has a direct connection to your specific duties and isn’t general in nature — a general-interest technology magazine doesn’t qualify just because you work in engineering.

Records you need

• A record of hours worked from home for the whole income year — a diary, roster, timesheet or calendar kept as you go, not an estimate reconstructed at tax time.
• Receipts for tools and equipment, with the purchase date and cost, so each item can be split correctly between the immediate $300-or-less deduction and decline in value.
• Evidence of your registration renewal, separate from any evidence of your initial registration — only the renewal is deductible.
• Details of overnight site travel: dates, the project or site you were working on, and receipts for accommodation, meals and incidentals.
• A basis for every work-use percentage you apply — for example, a note of how often protective glasses or sunglasses are worn at work versus privately.
• Evidence you were not reimbursed for any item you claim, particularly tools, protective equipment and travel.
• Union and professional association invoices, or rely on your income statement where the fee is itemised there.
• If you claim phone, data and internet separately (that is, you are not using the fixed rate) and the total is $50 or less, you don’t need records. Above $50 you need the bills plus evidence of your work use.

Key takeaways

• Business attire is not deductible for engineers — the ATO uses it as its own named example of conventional clothing, even though many engineers assume professional dress is a work cost.
• Registration works one way only: the initial cost of becoming a registered engineer is private, but renewing that registration while you’re employed is deductible.
• Tools and equipment are where the ATO’s own examples get specific to the job — a calliper or scientific calculator — split at $300: immediate deduction at or below, decline in value above.
• Overnight site travel is genuinely deductible (accommodation, meals, incidentals), but the ordinary daily trip from home to your regular workplace almost never is, even if you carry tools.
• The 70c fixed rate is usually the simplest way to claim working-from-home costs, but it rules out separate internet, phone, electricity and stationery claims on top.

Sources

• ATO: Engineers – income and work-related deductions
• ATO: Fixed rate method – working from home
• ATO: Deductions you can claim
• Legislative anchor: ITAA 1997 s 8-1 and Div 900; PCG 2023/1

Next step

• Compare the two work-from-home methods in the Work From Home Deductions Calculator
• Run your estimate in the Tax Return Calculator

Occupation guides

These role-specific guides cover the practical deduction rules, record-keeping checkpoints, and the best calculator to use next.

• Tax for Engineers — memberships, site travel, devices and current-role training