The short answer for engineers
Mining / civil / mechanical / electrical engineers on single PAYG with standard tools-of-trade deductions can often DIY. FIFO engineers, anyone on LAFHA, sub-contracting via ABN, PE/CPEng with consultancy income on the side, or working remotely from interstate start needing Agent help.
This guide covers the 5 engineer-specific factors that push you past myTax.
What makes engineer returns complex
1. FIFO + travel + LAFHA scenarios
Engineering is a FIFO-heavy profession:
- FIFO travel allowance — paid by employer for site-to-camp travel, may be tax-free if within LAFHA rules
- LAFHA (Living Away From Home Allowance) — FBT-treated, complex split between exempt accommodation and food vs assessable cash
- Site-to-site travel within same shift = deductible
- Home-to-airport-to-site depends on roster + tax-residency setup
FIFO returns are frequently mis-handled in myTax — engineers either over-claim (treating LAFHA as deduction) or under-claim (missing the legitimate site travel).
2. Consultancy / contracting via ABN
Many engineers contract under their own ABN alongside PAYG, or pivot to full contracting:
- Triggers Business and Professional Items schedule (myTax doesn't pre-fill)
- PSI (Personal Services Income) rules likely apply if 80%+ from one client
- GST registration if billings > $75k
- Apportionment of home office, internet, phone, vehicle, equipment depreciation
3. Professional registration + CPD
- Engineers Australia membership (CPEng / FIEAust)
- Specialist boards (NER, RPEQ, Board of Professional Engineers)
- CPD requirements (50 hours/year for CPEng — courses, conferences, journals)
- Indemnity insurance (if consulting)
Easy categories but easy to miscategorise or miss when busy.
4. Tools-of-trade + equipment
- Hard hat, steel-cap boots, hi-vis gear (work-only, deductible)
- Laptop, monitor, ergonomic equipment (depreciate > $300)
- Specialty software (AutoCAD / SolidWorks / Revit / Bentley) personal licences for work upskilling
- Vehicle (logbook method if site visits frequent)
5. Remote work + interstate / overseas
If you work for a mining/engineering company HQ'd in Brisbane but live and work remotely from Sydney, or you're an Australian engineer on a US contract:
- Tax residency tests apply
- DTA (Double Tax Agreement) where applicable
- Foreign employment income treatment
- 482 / TSS visa: temporary resident exemption rules
Decision matrix — engineers
| Situation | DIY in myTax fine? | Agent recommended? |
|---|---|---|
| Office-based PAYG, single employer | ✅ Yes | 🟡 One-off check |
| FIFO with standard 8-and-6 or 2-and-1 roster, single employer | 🟡 Doable but careful | ✅ Yes |
| LAFHA receipts in PAYG summary | ❌ FBT complexity | ✅ Strongly recommended |
| ABN consulting alongside PAYG | ❌ Business schedule | ✅ Strongly recommended |
| Pure contractor (own ABN + multiple clients) | ❌ Full Business | ✅ Strongly recommended |
| Multiple employers in FY | ❌ Tax-free threshold trap | ✅ Yes |
| Remote work overseas or interstate complexities | ❌ Residency | ✅ Strongly recommended |
3+ "✅" → Tax Agent self-paying via deductions identified.
Engineer-specific deductions an Agent will check
- Engineers Australia / NER / RPEQ membership fees
- CPD (courses, online learning, conferences, journals)
- Indemnity insurance if consulting
- Tools-of-trade (hard hat, boots, hi-vis, glasses, gloves)
- Laptop / monitor depreciation
- Software subscriptions (AutoCAD, SolidWorks personal licences)
- Site travel + vehicle (logbook method)
- Self-education (Masters, postgrad certificates in engineering or management)
- Phone work-use %
- Home office (for design/admin work)
When myTax DIY is genuinely fine for engineers
- Single office-based PAYG, full FY
- Engineers Australia + 1-2 small deduction categories
- No FIFO or LAFHA
- No ABN consulting
- No multi-employer year
- Comfortable with logbook method if any vehicle claims
If 6 of 6 apply, DIY in myTax is fine.
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*Disclaimer: This is general information only and does not constitute personal tax advice. Consult a registered tax agent for advice tailored to your specific situation. Always verify against the latest ATO guidelines at ato.gov.au.*
6-point self-check before deciding
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See decision guide for the framework.
AI analysis on this page is general information, not personal tax advice. Engineering scenarios benefit from review by a TPB Registered Tax Agent experienced with mining / construction / consulting mix.