How to claim work-related tax deductions

To claim a work-related deduction you must have spent the money yourself and not received a reimbursement. If your employer pays for something, or pays you back for it, there is no deduction — you are not out of pocket. An allowance is different from a reimbursement: an allowance is included in your assessable income and you claim the actual expense against it, whereas a reimbursement simply squares you up and leaves nothing to claim.

The expense must relate directly to earning your income. The connection has to be with the work you actually do, not with the fact that your employer asked you to spend the money. An employer instruction does not make a private expense deductible, and a conventional item does not become deductible because you use it at work.

You must have a record. For most claims that means a receipt showing the supplier, the amount, the nature of the goods, the date of the expense and the date of the document. Bank and credit card statements alone are usually not enough, because they show the amount but not what was bought.

The fourth thing is apportionment, and it is where the majority of adjusted claims come from. Where an expense has both a work and a private element you may claim only the work-related portion. That means keeping something that supports the split — a four-week diary of work calls against total calls, a logbook of work trips, a record of hours worked at home. The ATO does not require a particular format, but it does require a reasonable basis that you can explain.

An expense that is private, domestic or capital in nature is not deductible at all. Lunch at work, ordinary clothes, and travel between home and a regular workplace are private no matter how strongly you feel they were necessary. Capital items are not deducted outright but written off over their effective life, with an immediate deduction available for low-cost items.

Finally, a deduction is not a rebate. It reduces your taxable income, so it returns your marginal tax rate on the amount spent, not the amount itself. Spending money in June purely to reduce tax leaves you worse off in cash terms unless you needed the thing anyway. This sounds obvious written down and is nonetheless the reasoning behind an enormous amount of end-of-financial-year retail.

By the time you open your return, the ATO has your salary and tax withheld from your employer through Single Touch Payroll, your bank interest, your dividends, your private health cover details, your government payments and, increasingly, data from share registries, cryptocurrency exchanges, property managers, ride-share and delivery platforms, and short-stay accommodation platforms.

It also holds the aggregate claiming patterns for your occupation. The occupation and industry guides published on the ATO site are the public face of this: they set out, trade by trade, which expenses that occupation typically incurs and which it does not. A claim that sits far outside the pattern for your occupation and income is the most likely thing to attract a query.

That does not mean claiming above average is wrong. It means being able to explain why. A nurse who genuinely paid for her own registration, professional indemnity and a specialist course has a strong claim regardless of the average. A nurse claiming laundry for a plain uniform has a weak one regardless of how small it is.

The pre-fill data is a starting point, not the answer. Pre-fill is generally complete by late July but can be revised, and income the ATO does not see — cash work, foreign income, some platform income — is still your responsibility to declare. Lodging in the first week of July against incomplete pre-fill is the most common cause of an amended assessment.

The letters the ATO sends about deductions are usually not audits. They are data-matching letters asking you to review a particular claim, and the sensible response is to check the claim and either substantiate it or amend. Ignoring one converts a routine query into something slower and more expensive.

Registered tax agents see the same pre-fill and the same benchmarks. Using one does not shift responsibility for the claim onto them — the return is still yours — but the fee for managing your tax affairs is itself deductible in the following year's return.

To claim anything for working from home you must be genuinely working from home to fulfil your employment duties, not just occasionally checking email, and you must incur additional running costs because of it. Someone who takes a laptop home on a Friday evening is not working from home for this purpose.

Running expenses include electricity and gas for heating, cooling and lighting, home and mobile internet and data, phone costs, stationery and office supplies, and the decline in value of items you use for work such as desks, chairs, computers and monitors.

There are two methods. The fixed rate method gives you a set amount per hour worked from home covering energy, internet, phone and stationery in one figure, with depreciating assets claimed separately. The actual cost method requires you to work out the real work-related portion of each expense. You cannot use the fixed rate for a cost and then also claim that same cost separately.

The fixed rate is set by the ATO and has changed several times, along with the record-keeping it demands. The important shift is that a representative four-week diary is no longer sufficient for the fixed rate method — a record of the total hours actually worked from home across the whole year is required. Recreating that in October from memory does not meet the standard.

Occupancy expenses — rent, mortgage interest, rates, house insurance — are only claimable in narrow circumstances where part of your home is a genuine place of business, and claiming them can affect the main residence exemption from capital gains tax when you sell. For an ordinary employee working from home, they are not claimable.

If your employer pays you an allowance towards working from home costs, include the allowance as income and claim your actual expenses against it. The two do not cancel out silently.

The practical advice is to pick a method in July and keep the record it needs from day one. Almost every disallowed working-from-home claim fails on records rather than on entitlement.

Car expenses are deductible for work travel, not for commuting. Travel between home and a regular place of work is private, even if you work outside normal hours, are on call, or need the car for work once you arrive. The genuine exceptions are narrow: carrying bulky equipment you have no secure place to store at work, travelling between two separate workplaces on the same day, or travelling from home to an alternative workplace that is not your regular one.

There are two methods for car claims. The cents-per-kilometre method covers a capped number of business kilometres at a rate set by the ATO and requires you to show how you worked out the kilometres. The logbook method requires a continuous twelve-week logbook establishing a business-use percentage, which then applies for five years unless circumstances change, and lets you claim that percentage of all running costs including depreciation. The logbook usually produces a much larger deduction and almost nobody keeps one.

Clothing is where instinct is most often wrong. You can claim occupation-specific clothing that distinctly identifies your occupation, protective clothing and footwear, and compulsory or registered non-compulsory uniforms. You cannot claim conventional clothing bought to comply with a dress code — black trousers and a white shirt required by a restaurant are ordinary clothes, and a suit is an ordinary suit whatever your employer's expectations.

Laundry follows the same logic. If the clothing is deductible, laundering it is deductible, with a small reasonable-amount concession for laundry claims below a threshold before written evidence is required. Dry cleaning always requires receipts.

Tools and equipment are deductible where used for work, apportioned for private use. Items costing up to a low-value threshold can be claimed immediately; more expensive items are written off over their effective life. If you buy a laptop used seventy per cent for work, you claim seventy per cent of the decline in value, not seventy per cent of the purchase price in year one.

Phone and internet claims are the classic apportionment problem. The credible way to do it is to keep a representative four-week record of work versus total use and apply that percentage across the year, keeping the record and the bills. A round number with no working behind it is exactly what the data-matching letters target.

Union fees, professional association memberships, licences and registrations required for your work are deductible, and are among the cleanest claims available because there is no apportionment and the receipt is unambiguous.

Self-education expenses are deductible where the course has a sufficient connection to your current income-earning activities — because it maintains or improves the specific skills you use in your present job, or because it is likely to increase your income from that job.

The test is about your current work, not your intended work. A course that will get you into a different occupation is not deductible, however sensible the career move. This is the single distinction that decides most self-education claims, and it is why an accounting student working in hospitality cannot claim their degree while a working accountant usually can.

Where the connection exists, the deductible costs are broad: course and tuition fees, textbooks, stationery, academic journals, student union fees at the institution, some travel to and from the place of education, decline in value of equipment used for study, and interest on money borrowed to pay the fees.

Fees paid through a HELP loan are the important exception. Amounts paid through HECS-HELP, FEE-HELP and similar loans are not deductible, and neither are the compulsory repayments of those loans. Fees you pay up front out of your own money for a course meeting the connection test can be deductible.

Seminars, conferences, professional development days and industry training follow the same connection test. Where the trip has a private component — a conference in a city where you take a week's holiday afterwards — apportion the travel and accommodation, and keep an itinerary supporting the split.

The first $250 non-deductible threshold that used to reduce self-education claims has been removed, so the full amount of eligible expenses can be claimed. This is one of the few changes in the area that made claims simpler rather than harder.

Decide in July how you will keep records for the year, and use one system. The ATO's myDeductions tool in the ATO app lets you photograph receipts and log trips as you go, and upload the lot into your return, which removes the annual shoebox exercise entirely.

Keep written evidence for five years from the date you lodge the return the record supports, or longer if the record relates to a depreciating asset you are still writing off or a dispute is on foot. Digital copies are acceptable provided they are a true and clear reproduction.

Where a category has its own record rule — the logbook for cars, the hours record for the fixed rate working from home method, the four-week representative period for phone and internet — set that up at the start rather than reconstructing it later. Reconstructions are the weakest form of evidence and are what most disallowed claims come down to.

Wait for your income statement to show as tax ready in myGov before you lodge, and check the pre-filled figures against your own records rather than accepting them blindly. Pre-fill is usually complete by late July.

Claim the deduction in the year you incurred the expense, which is generally when you became liable to pay, not necessarily when the money left your account. Prepaid expenses covering a period after year end may need to be apportioned across years.

If you realise afterwards that you missed a deduction or claimed something you should not have, amend the return through ATO online services. Amendments are ordinary and are treated far more kindly than the same error found by the ATO. There is a standard period during which you may amend, generally two years for most individuals.

If you receive a query letter, respond with the substantiation rather than the argument. Where you cannot substantiate a claim, agreeing to the adjustment early limits interest and generally avoids penalties for what the ATO treats as a genuine mistake.