A mechanic bankrolls more of their own trade than almost anyone. The sockets in the roll cab, the diagnostic gear that finds a fault the workshop's own reader can't, the overalls, the tickets you keep current: you buy it, and a fair share of it comes back at tax time. The catch is that a kit worth tens of thousands is also the return most easily botched. One test settles every line. Did the money help earn your wage, or did it belong to your own life? Split your spending along that seam and July stops being a guess.
The test behind every claim
Three things have to hold before anything you buy turns into a deduction.
Fall short on any one and the claim is dead, however much it smells like part of the job. Split-use gear, the multimeter you also run across your own car, the phone that fields calls from the service desk, is claimed at the work share only, worked out fairly. A tool allowance on your payslip does not close the matter either: you declare that allowance as income in full, then still claim what you genuinely spent on tools underneath it.
The self-funded tool kit
Here is the money, and the reason this guide runs long. The kit you assemble over a working life, bought a drawer at a time off the truck, dwarfs every other deduction a mechanic has. A single number decides whether it comes off this year or over many.
Off the return in full the year you buy it. The lone spanner, the odd socket, a cheap plug-in reader, the pry bar you bent past use.
Written off slowly as it ages, what the ATO terms a decline in value. Roll cabs, scan tools and any kit bought as a set land here.
Borrow to buy your tools and the interest is deductible too, which weighs on mechanics harder than on any other trade, since so much of the kit rides on a truck payment plan. Insurance on the tools, servicing and the box itself count as well. The tools chapter pulls all of this apart, set trap included.
Uniforms and protective gear
Whatever shields you on the floor is deductible: steel-caps, safety glasses, the gloves and the heavy overalls that wear the grease and take the sparks. A logo uniform in the workshop's name qualifies, laundering included. Plain gear does not. An unbranded shirt, ordinary trousers, everyday shoes: none of it counts, not if you wear it only under a car, not if the workshop demands it.
Grease and brake dust wrecking your clothes is not what makes them deductible.
What you can claim on the car
Level with yourself here, because the car claim is usually thin. You're based at one workshop, you drive in and you drive home, and that leg is private, whatever the distance. Real work driving does hide underneath it, the parts run, the hop to another branch, the trip out to a course, and that part is fair game. It is just rarely a big number. On any trip the ATO asks the same thing: were you doing the job, or getting to it?
A fixed rate on each work kilometre, capped at 5,000 for the year. All it wants is a sound record of the trips you made.
Your real running costs, scaled to your work-use percentage. Ahead only if you genuinely clock up work kilometres, and it needs a twelve-week logbook with the receipts behind it.
The deductions that get missed
The recurring small stuff is what mechanics leave behind, and a year on the workshop floor stacks it high:
What you can't claim
A handful of costs feel like fair game and never survive the ATO:
- Your commute. Home to the workshop and back is private, whatever the distance or the hour you start.
- Plain clothing. Ordinary shirts, trousers and everyday shoes stay off, workshop rule or not.
- Your driver's licence. A work-specific ticket can qualify; the licence you would hold anyway stays private.
- The instant asset write-off. That twenty-grand write-off splashed across every trade blog is a business concession for ABN holders, not a wage-earner's rule. Yours is the $300 line: under it immediate, over it decline in value.
- A first qualification. The apprenticeship and the initial licence that got you in came before any wage, so they belong with breaking into the trade, not doing it.
The paper trail off the floor
Drop the invoice and the deduction drops with it. The ATO expects written proof of what you spent, a twelve-week logbook if you run the car that way, and a note on how you reached any work-use share. A tool-heavy return buries you in paper fast: the invoice for a fresh scan tool, the truck finance statement, the ARCtick renewal, the parts-run docket, the fortnightly union debit. The one record that carries a mechanic's return for years is a depreciation schedule for the kit, each tool over $300 logged with its date, cost, effective life and written-down value. What saves you is grabbing each receipt where it lands, at the truck or the parts counter, rather than clawing through a greasy glovebox the night before you lodge. The ATO's free myDeductions app will keep the basics.
The bottom line
What a mechanic can claim runs longer than most bother to chase, but each line has to be self-funded, tied to your wage, and provable. Take the tools and the interest behind them, keep drawing the decline in value on kit you already own, add the protective gear, the ticket renewals and the honest work driving. Drop the commute, the plain clothes, the first qualifications and the business write-off that was never yours. Nail those two lists, keep the invoices, and the ATO only clips what's left once the trade's real costs come off.
Tally the kit, the protective gear and the work driving, and see what they save against your income and tax.
Related: deductions by occupation · income tax calculator. General information only, not tax advice. Check the ATO or a registered tax agent for your situation.