ATO Home Office Expenses: Your Guide for 2025-26

Working from home often looks simple until tax time. You may be using a spare room, the end of a dining table, or a dedicated studio, but the ato home office expenses rules change depending on whether you are an employee or running a business from home. The point that matters is not where you sit. It is whether the expense has a direct connection to earning your income, whether you paid it yourself, and whether your records support the claim.

For FY 2025–26, the safest approach is to separate three questions before you start any calculation. Are you eligible to claim at all. Which method applies to your circumstances. And do your records match the method you want to use.

In practice, advisers reviewing work-from-home claims see the same issue repeatedly. People mix employee rules with business-from-home rules, especially around rent, internet, and asset purchases. At Baron Tax & Accounting, that distinction comes up regularly in Brisbane matters where clients have hybrid work arrangements, contracting income, or a side business operating from home.

Understanding Your Eligibility to Claim Home Office Expenses

Remote and hybrid work remain part of ordinary working life. The Australian Bureau of Statistics reports that approximately 36% of Australians regularly work from home (ABS). That is why ato home office expenses now affect employees, contractors, and small business owners well beyond traditional home-based professions.

The ATO tests that matter first

A claim starts with a few basic conditions.

• Direct connection to income: The expense must relate to earning your employment or business income.

• You incurred the cost: You must have paid the expense yourself.

• No reimbursement: If an employer or another party reimbursed you, you generally cannot also claim it.

• Records exist: The ATO expects evidence. If the record is missing, the claim is vulnerable.

These rules sound simple, but they eliminate many weak claims quickly. A comfortable home setup does not make an expense deductible by itself.

A home office does not always mean a separate room

The ATO does not limit work-from-home claims to a formal study. A home office can involve a shared area if work is performed there and the claim is limited to the deductible component. That is particularly relevant for employees who work part of the week from home but do not have an exclusive office.

The key distinction is between working from home and running a business from home. Employees usually claim running expenses. Sole traders may be able to claim running expenses and, in the right facts, occupancy expenses.

Practical point: A shared workspace can still support a claim for running expenses. It usually does not support broad occupancy claims.

Employee or sole trader

Many claims go wrong in this area.

Employees generally focus on costs linked to performing employment duties at home. That commonly means claiming through either the fixed rate method or the actual cost method.

Sole traders and contractors need to go one step further. If the home is their principal place of business, or part of it is a place of business, the analysis changes. Occupancy expenses may become relevant, but so do broader tax consequences such as capital gains tax issues when the property is sold.

For a broader deductions context, the ATO treatment of mixed work and private costs is also discussed in this guide on what can I claim on tax in Australia.

A useful supplementary read for small business owners is Navigating Home Office Expenses for Your Small Business: An ATO Guide, particularly if you are trying to separate employee-style work-from-home claims from business premises issues.

The Three Methods for Calculating Your Claim

A Brisbane employee working from the dining table and a sole trader using a converted spare room can both incur home office costs, but the tax treatment is not the same. The calculation method has to match both the type of expense and the taxpayer’s circumstances.

The ATO methods sit across two categories. Running expenses relate to the cost of using the home for work. Occupancy expenses relate to the cost of holding the home itself, such as rent, mortgage interest, rates, or home insurance. Employees usually deal only with running expenses. Sole traders and contractors may need to consider both, but only if part of the home has the character of a genuine place of business.

Fixed rate method

The fixed rate method uses a set hourly rate for work performed at home. The current ATO rate is 70 cents per hour worked from home (ATO fixed rate method).

That rate covers the following running costs:

• Electricity and gas for heating, cooling, and lighting

• Internet

• Mobile and home phone usage

• Stationery

• Computer consumables

The practical attraction is obvious. If the records of hours are sound, the calculation is straightforward and usually easier to defend than a rough actual-cost estimate.

The limit is just as important. The fixed rate does not cover everything. It does not cover occupancy expenses, and it does not remove the need to separately assess depreciating assets where a deduction is otherwise available. For taxpayers who also want to examine separate claims for connectivity and equipment, the rules are set out in this guide to claiming mobile phone, internet and device deductions.

For employees, this method often works well where home-based work is regular and records are simple. For sole traders, it can also be a sensible running-expense method, but it does not answer the separate question of whether the home includes a place of business.

Actual cost method

The actual cost method works expense by expense. Instead of using a standard hourly rate, you identify each deductible cost, calculate the work-related share, and keep records that support the apportionment.

That usually means retaining:

• utility bills

• internet and phone accounts

• work-use diaries or logs

• receipts for equipment, repairs, and consumables

• calculations showing how work use was measured

This method can produce a better result where household costs are higher than average, the work pattern is intensive, or the taxpayer has a dedicated area with measurable business use. It also creates more points of failure. If the usage percentage is based on guesswork, the claim is exposed.

Employees usually use the actual cost method for running expenses only. Sole traders may use it for running expenses and then consider, as a separate issue, whether occupancy expenses are available. GST also starts to matter more for sole traders registered for GST. A private home expense does not become fully creditable just because some business is done there. Input tax credits still depend on business use, tax invoice requirements, and whether the expense is partly private.

Practical test: If the calculation cannot be shown from invoices, logs, and a clear apportionment method, it is usually not ready to lodge.

Occupancy method

The so-called occupancy method is not a broad third option available to everyone. It is a separate category of claim that only arises in narrower cases, usually for sole traders or contractors whose home contains a genuine place of business.

These expenses can include:

• rent

• mortgage interest

• council rates

• land taxes

• home insurance premiums

Employees generally cannot claim these amounts because they are private or domestic in character. Working from home for convenience, or even because the employer allows it, does not usually convert part of the home into deductible occupancy space.

For sole traders, the analysis is stricter than many expect. A room used exclusively and consistently for business, set up with a commercial character, is different from a mixed-use study or kitchen bench. The tax benefit can be worthwhile, but the trade-off is broader. A successful occupancy claim can affect the capital gains tax position on sale of the home. If staff are engaged through the business, home office deductions also sit alongside separate superannuation obligations, which are not part of the home office claim but are often missed in cash flow planning.

Side-by-side view of the three approaches

Method or category	Usually available to employees	Usually available to sole traders / contractors	Main record focus	Main risk
Fixed rate method	Yes, for running expenses	Yes, for running expenses	Hours worked from home and basic supporting records	Claiming separately for costs already built into the rate
Actual cost method	Yes, for running expenses	Yes, for running expenses, and sometimes as part of a broader home business analysis	Bills, invoices, usage logs, and apportionment calculations	Inflated work-use percentages or weak evidence
Occupancy expenses	Rarely	Sometimes, if part of the home is a place of business	Floor area, business character of the space, and ownership or rental costs	Treating a private area as business premises, plus CGT consequences

Decision flow for choosing a calculation method

Start
 |
 |-- Are you an employee?
 |        |
 |        |-- Yes
 |        |    |
 |        |    |-- Claim running expenses only in most cases
 |        |    |-- Choose fixed rate OR actual cost
 |        |
 |        |-- No, I am a sole trader / contractor
 |             |
 |             |-- Is part of the home a place of business?
 |                    |
 |                    |-- No
 |                    |    |-- Consider running expenses only
 |                    |
 |                    |-- Yes
 |                         |-- Consider running expenses
 |                         |-- Review occupancy expenses carefully
 |
End

What works in practice and what does not

The strongest claims are usually the simplest ones that match the records already available.

Problems usually arise in four situations:

• Double claiming under the fixed rate method, especially for internet or phone costs already covered by the hourly rate

• Loose apportionment under the actual cost method, particularly where several family members share the same services

• Incorrect occupancy claims by employees, based on working from home rather than having a true place of business

• Missing GST or super implications for sole traders, where the home office deduction is considered in isolation from the wider business position

The method should follow the facts. Employees generally need a defensible running-expense claim. Sole traders need a wider review that covers deductibility, GST treatment, and any downstream consequences before occupancy costs are claimed.

Comparing the Fixed Rate and Actual Cost Methods

A Brisbane employee works from the kitchen table three days a week. A sole trader runs client work from a dedicated study five days a week. Both are working from home, but the better calculation method may be different because the compliance risks are different.

The choice is administrative ease versus a closer match to actual expenditure. Fixed rate usually suits taxpayers who want a cleaner claim with fewer moving parts. Actual cost can produce a stronger result where work use is high, records are complete, and the numbers justify the extra effort.

Comparison of home office expense calculation methods

Feature	Fixed Rate Method	Actual Cost Method
Basis of claim	Set hourly rate	Work-related share of actual expenses
Main strength	Simpler calculation	More specific to actual use
Main record focus	Hours worked from home	Bills, logs, diaries, apportionment calculations
Expenses built into method	Includes specified running costs covered by the rate	Depends on actual expense categories claimed
Separate asset treatment	Asset deductions may still be considered separately where eligible	Asset deductions form part of the wider actual-cost review
Best fit	Consistent work-from-home pattern with straightforward records	Detailed record-keeping and higher or more complex costs
Main risk area	Claiming covered costs twice	Unsupported percentages or weak substantiation

When fixed rate is usually the better fit

For many employees, fixed rate is the safer method. The records are easier to maintain, the calculation is easier to review, and the risk of overstating shared household costs is lower.

As noted earlier, the current fixed rate uses an hourly amount and covers a defined group of running expenses, including energy, internet, phone use, stationery, and computer consumables. That has a practical consequence. Those covered items cannot be claimed again separately under the same method.

This point matters most where taxpayers mix methods without realising it. Phone and internet are a common example. If you need help separating what can still be claimed for devices from what is already absorbed by the hourly rate, see our guide to claiming mobile phone, internet and device deductions.

For sole traders, fixed rate can still be appropriate, but it should not be chosen by default. If the business has meaningful home-based costs, or part of the home may qualify as a place of business, actual cost may warrant closer review.

When actual cost is worth the extra work

Actual cost suits taxpayers with evidence, not just higher bills.

A sole trader with a dedicated office, substantial business internet use, and separately identifiable equipment costs may obtain a more accurate deduction under actual cost. An employee can also use this method, but only if the work-related percentages are supportable and the expense categories claimed are available to employees.

The trade-off is record quality. Shared services must be apportioned on a defensible basis. Electricity estimates need a clear method. Internet and phone use need logs or another reasonable basis. If family use is mixed through the same accounts, broad percentages with no working papers are difficult to defend.

There are also wider consequences for business operators. Sole traders should look at GST at the same time as income tax. If the expense includes GST and the taxpayer is registered, the deductible amount and the GST credit position need to align. Superannuation also sits in the background. A larger home office claim does not change the obligation to deal with super correctly for eligible workers or the sole trader's own retirement planning.

A method is only as good as the records behind it. In practice, employees often prefer fixed rate for compliance simplicity. Sole traders more often benefit from testing both methods before lodging, especially where home office use forms part of a broader business structure.

Worked Examples for Employees and Sole Traders in Brisbane

Example one, employee working hybrid from home

A salaried employee lives in Brisbane and works for an employer based in the CBD. They spend part of the week working from home from a study nook in a spare room and part of the week attending the office.

The first question is not the amount of the deduction. It is the category of claim. Because the person is an employee, the analysis usually stays within running expenses. Occupancy costs such as rent are generally not the starting point and, in most cases, are not available.

If this employee has reliable timesheets, calendar entries, or a spreadsheet showing hours worked from home, the fixed rate method may be the cleanest option. It gives a straightforward basis for the claim and avoids repeated bill apportionment.

If the same employee instead wants to use the actual cost method, they would need to separate the work-related component of internet, phone, electricity, and any other eligible running expenses. If the household internet is shared with family members and personal streaming use is substantial, the apportionment must be supportable. A rough guess will not do.

In practice, many employees in Brisbane choose fixed rate because the compliance burden is lower. That is especially true where the home setup is functional rather than specialised.

Example two, sole trader using a dedicated room

A freelance graphic designer operates as a sole trader from home in Brisbane. One room is set aside as a dedicated workspace for client work, file storage, and equipment. Clients do not see a general living room. They see a space with a clear business function.

That changes the tax analysis.

This person still needs to consider running expenses such as electricity, internet, phone, stationery, and asset deductions. They can compare the fixed rate against actual cost for those items. But unlike the employee example, they may also need to review whether the room has the character of a place of business.

If it does, occupancy expenses may be in scope. That could include a proportion of rent or mortgage interest and similar home ownership or rental costs, subject to the facts and the required apportionment. The claim must still be grounded in evidence. Floor area, business use, and the exclusive nature of the room matter.

That also introduces another layer. Once a sole trader claims occupancy costs tied to a home-based place of business, the property can attract capital gains tax consequences later. That issue is often missed when people focus only on the immediate deduction.

Why the outcomes differ

The difference between the two examples is not about profession. It is about the legal character of the expense and the use of the home.

• Employee example: usually limited to running expenses

• Sole trader example: running expenses first, then possible occupancy review

• Shared area: usually weaker for occupancy treatment

• Dedicated business room: stronger, but with more consequences and more evidence required

Some individuals in these situations self-lodge through myGov. Others use a registered tax agent where the return includes business use of home, asset depreciation, or occupancy questions. A more detailed return preparation process can also be useful where work patterns involve multiple income streams. For a broader individual lodgement context, see this Brisbane tax accountant 2026 individual tax return guide.

Local observation: In Brisbane, the strongest home office claims usually come from taxpayers who decide their method early and keep records throughout the year, not from those trying to reconstruct everything at lodgement time.

Your ATO Record-Keeping and Substantiation Obligations

Records decide whether a home office claim survives scrutiny. Good intent is not enough. The ATO expects documents that show both the expense and the work-related basis for the amount claimed.

Fixed rate records

For the fixed rate method, the critical record is a complete and supportable record of hours worked from home. That can be kept through:

• a diary

• timesheets

• a roster

• a spreadsheet

• calendar records

You should also retain evidence that you incurred the types of running costs that sit within the fixed rate. The method is simple, but it is not documentation-free.

Actual cost records

The actual cost method is document-heavy by design. The ATO requires detailed records, including a four-week diary to establish a representative pattern of work-related use for shared expenses such as internet and phone (ATO actual cost method).

That diary is not a formality. It is the basis for your percentage.

Keep:

• Bills and invoices: electricity, gas, internet, phone, and other claimed items

• Usage records: the log that supports work versus private use

• Asset documents: receipts and calculations for decline in value or immediate deductions where applicable

• Repair records: if you are claiming work-related repairs to eligible items

• Floor plans or workspace notes: if floor area forms part of your method

What contemporaneous means in practice

Contemporaneous records are records made at the time, or close to it. They are generally more reliable than a reconstruction prepared months later from memory.

A simple spreadsheet updated weekly is often far better than a polished estimate created at tax time. For sole traders issuing frequent client invoices, tools that centralise billing records can also help preserve the audit trail. Some businesses use an online invoice system alongside bookkeeping records to keep dates and business use more consistent.

For broader tax file organisation, this checklist on essential records you need to keep ATO compliant is a useful companion.

A practical documentation checklist

Before lodging, check that you can answer yes to each of these:

1. Hours record exists if you are using the fixed rate method.

2. Bills are retained for each category claimed under actual cost.

3. A usage basis exists for shared expenses such as internet or phone.

4. Asset receipts are available for desks, screens, laptops, or other work equipment.

5. Private use is excluded from the amount claimed.

Some individuals may choose to have their tax return reviewed by a registered tax agent to ensure their documentation meets ATO standards. That is often sensible where the return includes mixed work and private use, sole trader income, or a dedicated business area at home.

Common Pitfalls and Advanced Tax Considerations

The biggest errors in ato home office expenses claims are usually not technical. They are category mistakes. People claim the wrong type of cost, under the wrong method, with the wrong evidence.

Common mistakes the ATO tends to scrutinise

These are the issues that repeatedly create problems:

• Double claiming covered costs: using the fixed rate method and then separately claiming internet or phone costs already built into that rate

• Claiming private household items: ordinary domestic items with no direct income connection remain private

• Counting non-work time: home hours claimed should reflect actual work, not breaks or general presence at home

• Treating employee costs as business premises costs: this is especially common with rent and mortgage interest

• Using a broad estimate for mixed-use services: shared family internet and mobile plans need a supportable work-use basis

The occupational status of the taxpayer matters. Employees and sole traders are not interchangeable for home office purposes.

GST for sole traders and contractors

GST is often overlooked in home office discussions. The basic issue is not whether GST creates a home office deduction. It is whether a GST-registered sole trader is correctly accounting for business purchases and private use in their BAS and tax return.

If you are registered for GST and incur expenses that relate partly to business and partly to private use, apportionment remains important. Claiming the income tax deduction and managing GST credits are related, but they are not the same exercise. The underlying evidence still matters.

A person can complete GST registration directly through the Australian Business Register. Alternatively, some use a structured registration service where the process is handled through a guided workflow. The same balanced approach applies to BAS preparation and record keeping.

Superannuation issues for home-based business owners

Superannuation does not become deductible merely because you work from home. The relevant question is whether you made eligible contributions and whether the contribution rules and notices have been handled correctly.

For sole traders, home office claims and superannuation strategy often sit in the same annual review because both affect taxable income. They are separate rules, but they should be considered together. A deduction for business use of home does not replace the need to review contribution records and fund reporting.

Capital gains tax consequences

The most important advanced issue is capital gains tax. If a sole trader claims occupancy expenses because part of the home is a place of business, that can affect the main residence exemption when the property is later sold.

That does not mean occupancy claims are wrong. It means they require a wider lens. An immediate deduction may carry a later CGT consequence, and the trade-off should be understood before lodging.

Related employer issues

Where an employer provides equipment, allowances, or reimbursements, the treatment may intersect with payroll or fringe benefits tax issues at the employer level. That is separate from the employee deduction question, but it can explain why some expenses are not claimable by the individual. Employer-side context is explored further in this guide on how to manage fringe benefits tax in Australia.

Important distinction: A deduction is weaker when the expense is domestic in character, reimbursed, or only loosely connected to income earning. It is stronger when the use, cost, and work nexus can all be shown clearly.

Frequently Asked Questions About Home Office Claims

Can I claim if I work from a dining table or shared space

Yes. A dedicated room is not required to claim eligible running expenses.

What matters is whether you were working from home and can support the claim with the right records. For employees, this often supports a fixed rate or actual cost claim for running expenses. For sole traders and contractors, the same shared-space arrangement may still allow running expense deductions, but it will rarely support occupancy claims because the area does not usually have the character of a separate place of business.

Can I claim my mobile phone plan if I use it for both work and private purposes

Yes, but only the work-related portion is deductible.

A reasonable apportionment method is needed. That usually means using a representative period, such as a diary or itemised usage record, and applying that pattern to the claim. Method choice matters here. If you use the fixed rate method, do not claim phone expenses separately where they are already covered within that rate. Sole traders also need to consider whether the phone expense includes GST and whether they are entitled to claim input tax credits through their BAS.

Can employees claim rent, mortgage interest, or council rates

In most cases, no.

For employees, these amounts are usually private or domestic occupancy expenses. A claim only arises in narrow circumstances, and the facts need to be strong. The work area generally needs exclusive income-earning use, and the arrangement with the employer must show that working from home was more than a matter of convenience. In practice, Brisbane employees working hybrid arrangements are usually looking at running expenses, not occupancy costs.

Can a sole trader claim part of the home itself

Possibly, but the employee and sole trader rules diverge here.

A sole trader or contractor may be able to claim occupancy expenses if part of the home is a place of business. That conclusion depends on the physical setup, the way clients or work activities are conducted, and whether the area is clearly identifiable as business premises. The deduction can be valuable, but the trade-off is real. It may affect capital gains tax on a later sale, and registered businesses also need to consider GST treatment carefully because the GST position on a home is not the same as the income tax deduction position.

Do I need receipts for everything

You need records that match the method used and the type of expense claimed.

For actual cost claims, invoices, bills, and calculation worksheets usually do the heavy lifting. For fixed rate claims, the ATO still expects evidence of hours worked from home and proof that you incurred the relevant running costs. For sole traders, keep an eye on asset records as well, particularly where depreciation, instant asset write-off rules, or BAS reporting may also be in play.

Is self-lodgement acceptable for ato home office expenses

Yes, if the facts are simple and the records are in order.

A straightforward employee claim with clean hour records is often suitable for self-lodgement through myGov. The risk rises once the claim involves mixed-use assets, sole trader income, GST credits, occupancy expenses, or superannuation questions linked to contractor status and business structure. In those cases, a review before lodgement usually saves more trouble than it costs.

Summary

The core compliance points are straightforward, even when the detail is not.

• Eligibility comes first: the expense must relate directly to earning income, must be paid by you, and must not be reimbursed.

• Method selection matters: employees usually compare fixed rate and actual cost for running expenses. Sole traders may need an additional occupancy analysis.

• Records are decisive: hours, bills, usage logs, and asset records need to align with the method used.

• Main risk areas: double claiming, weak apportionment, and employees claiming occupancy expenses without a valid basis.

• Brisbane relevance: hybrid employees in Brisbane often suit the fixed rate where records of hours are clean, while sole traders operating from dedicated home business spaces need a broader review that includes GST, superannuation, and possible CGT effects.

If you are completing the process yourself, official government platforms remain available. If your position is more complex, some taxpayers use structured online tax return services or obtain a professional review before lodgement to reduce error risk.

Official ATO Reference

For the primary source material, use the ATO’s official working from home guidance referred to earlier in this article.

If you are checking a point that often causes confusion, start with the parts dealing with eligibility, the fixed rate and actual cost methods, and record-keeping. Employees should read those sections alongside the rules on reimbursements and work-related deductions. Sole traders and contractors should also cross-check the business treatment of GST, asset depreciation, and whether any home occupancy claim has wider tax consequences.

Next Steps

Before you lodge anything, separate your position as an employee or as a sole trader. The deduction rules overlap, but the tax treatment does not. Employees usually focus on whether the expense was incurred personally and not reimbursed. Sole traders also need to consider GST credits, business-use apportionment, depreciation, and whether a claim affects other parts of the business accounts.

If your records are incomplete, fix that first.

A practical next step is to gather the documents that support the method you intend to use, then test whether the claim still stands if the ATO asks for evidence six or twelve months later. That discipline usually exposes the weak points quickly, especially around diary records, mixed-purpose internet and electricity costs, and items paid through a business account but used partly for private purposes.

You can then choose whether to prepare the claim yourself through the usual government systems or have an adviser review it before lodgement. That decision often comes down to risk, not convenience. Straightforward employee claims are often manageable without assistance. Claims involving sole trader GST treatment, asset write-offs, superannuation planning, or occupancy costs usually justify a second review.

Baron Tax & Accounting

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Email: info@baronaccounting.com

Phone: +61 1300 087 213

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