Work Deductions: The Three Golden Rules in Practice

Almost every question about work-related deductions comes back to three tests. The ATO calls them the golden rules, and they are deliberately simple. The trouble is that people apply them loosely, and a loose reading is exactly what the ATO's data matching is built to catch.

Rule one: you spent the money yourself

A deduction recognises a cost you bore. If your employer paid for something directly, or reimbursed you for it, you cannot also claim it. The same applies when someone else, such as a partner, paid with their own money.

The test sounds obvious, but it trips people up in three common ways:

• Reimbursements. If you bought a work laptop bag and your employer paid you back, there is nothing to claim. If they reimbursed only part, you may claim only the unreimbursed part, provided the other rules are met.
• Allowances are different from reimbursements. An allowance is extra pay, usually shown on your income statement and included as income. Receiving an allowance does not automatically entitle you to a deduction; you can claim only what you actually spent and can show was work-related.
• Shared expenses. For a household bill in someone else's name, you need to be able to show you actually bore your share of the cost.

Rule two: it relates directly to earning your income

This is where most disputes live. The expense must have a real connection to how you earn your income, not just to having a job in general. The question to ask is: did I incur this in the course of doing my work?

Some examples of where the line falls:

• Travel. Driving from home to your normal workplace is generally private, even if the drive is long or you take work calls on the way. Driving between two workplaces, or from your usual workplace to a client site, generally is work-related.
• Clothing. Occupation-specific clothing, protective clothing and certain compulsory or registered uniforms can qualify. Conventional clothing, such as a suit or black trousers, generally does not, even if your employer insists you wear it.
• Self-education. A course can be deductible if it maintains or improves the skills you use in your current job. Study aimed at getting a different job usually fails the test.
• Grooming, childcare and meals on a normal working day. These are generally private, because they are costs of being able to work rather than costs of doing the work.

Dual-use items need extra thought. A phone, internet plan or laptop used for both personal and work purposes passes rule two only for the work-related share. You need a reasonable basis for working out that share, which is where the third rule comes in.

Rule three: you have a record to prove it

A deduction you can't support is, in practice, a deduction you can lose. Records usually mean a receipt or invoice showing who supplied the item, what it was, the amount, and the date. For dual-use items you also need something showing how you calculated the work-related portion, such as a diary of usage over a representative period.

The ATO allows some simplified approaches. For example, there are set-rate methods for car expenses and working from home, and there are limited situations where smaller claims don't need a written receipt. But every claim still needs a basis you can explain, and simplified methods carry their own record-keeping rules. The record-keeping checklist covers what to keep and for how long.

The three golden rules work like a chain: an expense must pass all three. A real receipt doesn't rescue a private expense, and a genuinely work-related cost still fails if your employer paid it back.

Testing common claims against the rules

Here is how typical employee claims tend to fare. Treat this as a thinking tool, not a ruling; your facts matter, and the ATO's occupation guides go into much more detail.

How the ATO checks these claims

The ATO receives information from employers, banks, insurers and many other sources, and it compares claims across people in similar occupations and income ranges. A claim that is unusually large for your occupation is more likely to attract questions. That doesn't make a genuine large claim wrong, but it does make good records essential.

The ATO publishes occupation and industry guides that explain how the rules apply to particular jobs, such as nurses, tradies, retail workers and teachers. They are worth reading before you claim; you can find them from the deductions section of ato.gov.au/individuals-and-families.

Three scenarios where the rules bite

The retail worker and the uniform. A shop requires staff to wear a branded polo shirt with the store logo. A distinctive, compulsory uniform like that can pass rule two, and laundering it may be claimable too. If the same store only asks for "neat black clothing", rule two generally fails because the clothing is conventional.

The nurse and the course. A nurse pays for a short clinical course that builds skills used on the ward. That can pass rule two. If the same nurse enrols in a course aimed at moving into an unrelated career, it usually fails, because it relates to future income rather than current income.

The tradie and the tools. A tradesperson buys a power tool used on jobs and occasionally at home. Rule two is passed only for the work-use share, and depending on its cost the claim may need to be spread over several years as the tool declines in value. The receipt plus a reasonable note on work use covers rule three.

A five-minute pre-claim routine

1. List every work expense you are considering.
2. Cross off anything your employer paid for or reimbursed.
3. Cross off anything you would have spent anyway to live, dress, eat or get to work.
4. For each remaining item, find the record. No record, no claim until you find one.
5. For dual-use items, write down how you worked out the work share and keep that note.

Frequently asked questions

Can I claim something if my employer requires me to buy it?

Being required to buy something helps, but it isn't enough on its own. The item must still relate directly to earning your income and not be private in nature. Conventional clothing is the classic example of a required purchase that generally isn't deductible.

What if I lost the receipt?

Look for alternative evidence, such as a bank or card statement combined with other details of the purchase, or ask the supplier for a copy. The ATO explains what counts as an acceptable record on its record-keeping pages.

Do the golden rules apply to sole traders?

The golden rules are framed for employees. Business deductions follow similar principles but have their own rules, so sole traders should read the business guidance on the ATO website rather than the employee guides.