A deduction is not simply an expense that feels business-related. For sole trader tax deductions Australia, the central test is whether you incurred the cost in earning your business income. Get that distinction right, keep reliable evidence, and your tax return can reflect the real cost of running your business without creating avoidable ATO risk.
For many sole traders, the issue is not a lack of legitimate expenses. It is claiming private costs by mistake, missing smaller recurring deductions, or trying to reconstruct a year of transactions at tax time. Clear records throughout the year give you a more accurate view of profit, cash flow and likely tax obligations – not just a smoother return at year end.
A business expense is generally deductible when it has a direct connection to earning assessable income and is not private, domestic or capital in nature. In practical terms, a web designer can usually claim software used to deliver client work, while a café owner can claim ingredients used in meals sold to customers.
The details matter. If an expense is partly private and partly business-related, you can generally claim only the business portion. A mobile plan used 70 per cent for client calls, supplier contact and business administration is not automatically a 100 per cent deduction simply because it is in your name.
Some costs are treated differently because they provide an enduring benefit to the business. Equipment, vehicles and fit-outs may be deductible over time through depreciation, although temporary tax measures can sometimes allow an immediate deduction. The applicable treatment depends on the asset, your circumstances and the income year, so it is worth checking before making a significant purchase purely for tax reasons.
Your deductible expenses will depend on how you operate, but the categories below are common across many service businesses, trades and professional practices.
Business premises rent, utilities, business insurance, bank fees, merchant terminal charges, accounting software, website hosting, advertising and professional subscriptions may be deductible where they relate to the business. So can stationery, printing, postage and consumable supplies.
Professional fees are often overlooked. Fees for bookkeeping, accounting, tax return preparation, legal advice connected with the business, and business consulting can generally be claimed when they relate to earning income or meeting your tax obligations. A good bookkeeping process also helps ensure these costs are correctly classified rather than lost in a general transaction category.
If you use a car to visit clients, travel between work sites, collect materials or attend other business-related appointments, you may be able to claim the business-use portion of vehicle costs. Depending on eligibility and the method chosen, this may involve using a cents-per-kilometre method or keeping a compliant logbook and claiming actual running costs.
Ordinary travel from home to a regular place of work is generally private, even if you answer calls or think about work on the way. Travel between separate work locations, or from your usual workplace to a client meeting, is treated differently. This is an area where a diary, calendar and logbook can make the purpose of each trip much easier to support.
Work-related travel may also include flights, accommodation, parking, tolls and public transport where the trip is genuinely for business. If a trip combines business and private time, only the business-related share is deductible. Adding a holiday to a conference does not make the entire trip a business expense.
Working from home can create legitimate deductions, but the method needs to match your circumstances. You may be able to use an ATO fixed-rate method for eligible running expenses, provided you meet the record-keeping requirements for the relevant year. Alternatively, you may claim actual expenses based on the business portion of costs such as electricity, internet, phone use and office consumables.
Occupancy costs such as rent, mortgage interest, council rates and home insurance require extra care. They are not automatically deductible because you have a desk at home. A dedicated area used exclusively as a place of business may change the position, but it can also have capital gains tax implications when you sell your home. Obtain advice before claiming occupancy costs.
Laptops, mobile devices, specialised tools, office furniture, cameras and industry-specific equipment can all be relevant deductions where used in the business. For assets used privately as well, claim only the business-use percentage.
The same principle applies to software subscriptions, cloud storage, cybersecurity tools and online meeting platforms. Keep invoices that show what was purchased and, where relevant, a reasonable basis for the business-use split. A note made at the time is far more convincing than an estimate made two years later.
Training may be deductible when it maintains or improves skills you already use in your business. A photographer undertaking advanced editing training, for example, may have a clear connection to current income-producing work. Training that qualifies you for a new profession or starts an entirely new business direction is less likely to be deductible.
Industry licences, registrations and membership fees can also be claimable when they are necessary or directly relevant to your work. The connection to existing business income remains the key test.
If you are registered for GST and can claim a GST credit through your BAS, your income tax deduction is generally the expense excluding GST. Claiming the full GST-inclusive amount as an income tax deduction would effectively duplicate the benefit.
If you are not registered for GST, you would generally claim the GST-inclusive cost as part of your deduction. Accurate coding in your accounting software helps prevent errors here, particularly where expenses include a mix of GST-free, input-taxed and taxable purchases.
Sole traders sometimes assume that paying for something through the business account makes it deductible. It does not. Private groceries, everyday clothing, fines and penalties, and the private element of household costs are generally not business deductions.
Entertainment is another common trap. Meals, drinks and social events with clients may help build relationships, but they are often non-deductible for income tax purposes and may not support GST credits. There are exceptions in limited circumstances, but this is not an area to handle casually.
You also cannot claim your own time, salary or drawings as a deduction. As a sole trader, you and the business are not separate legal entities for income tax purposes. Money you transfer to yourself is a drawing from business profit, not a wage expense.
The ATO expects you to retain records that explain what you paid, when you paid it, who you paid and how it relates to your business. In most cases, keep records for at least five years. Digital copies are acceptable provided they are clear, complete and accessible.
Receipts alone are not always enough. For mixed-use costs, maintain a logbook, usage diary or calculation showing how you determined the business percentage. For home-office claims, keep the records required for your chosen method. For travel, retain an itinerary and make a brief note about the business purpose.
A separate business bank account and dedicated business card make this process much easier. They reduce the time spent separating personal purchases from business transactions and give you cleaner information for BAS preparation, cash-flow reporting and tax planning.
A useful deduction is one your business genuinely needs, not an unnecessary purchase made to reduce tax. Spending $1,000 to save a portion of that amount in tax still leaves your business with less cash. Before buying equipment, prepaying an eligible expense or making a major stock purchase, consider whether it supports your operations, cash flow and growth plan.
Review your profit position before year end rather than waiting for your tax return. Up-to-date bookkeeping can show whether you have set aside enough for income tax, GST and any other obligations. It also creates time to check depreciation treatment, unpaid invoices, deductible expenses and superannuation timing where relevant.
At Everest Accounting, we help sole traders maintain reliable records, meet their compliance obligations and use current financial information to make smarter decisions. The strongest tax outcome is not built from last-minute guesses. It comes from organised books, sensible business choices and records that give you confidence in every claim.
