10 Tax Deductions Brisbane Small Businesses Miss Every Year

Are You Leaving Money on the Table at Tax Time?

Every financial year, thousands of Brisbane small business owners pay more tax than they need to — simply because they don’t know what they can claim. As a CPA and Registered Tax Agent working with businesses across North Lakes, Mango Hill, and the broader Moreton Bay region, I see it time and again: legitimate business expenses going unclaimed.

The Australian Taxation Office (ATO) allows a wide range of deductions for business expenses that are directly related to earning your income. The key is knowing what qualifies — and keeping proper records. Here are 10 tax deductions that Brisbane small businesses frequently overlook.

1. Home Office Running Costs

If you operate your business from home — even part-time — you can claim a proportion of your household running costs. This includes electricity, gas, internet, phone, and even cleaning costs for your dedicated workspace. Many North Lakes and Mango Hill business owners run home-based enterprises but forget to claim these everyday costs.

Since 1 July 2022, the ATO’s revised fixed-rate method allows you to claim 67 cents per hour for home office running expenses, provided you keep a log of hours worked from home. Alternatively, the actual cost method lets you calculate your precise expenses — often resulting in a higher deduction if your utility bills are significant.

2. Motor Vehicle Expenses Beyond the Basics

Most business owners know they can claim vehicle costs, but many only use the cents-per-kilometre method (currently 85 cents per km, capped at 5,000 business kilometres). If you drive extensively for business — visiting clients across Brisbane, picking up supplies, or travelling between job sites — the logbook method could deliver a much larger deduction.

Keep a logbook for a continuous 12-week period to establish your business-use percentage, then apply that percentage to all running costs: fuel, registration, insurance, servicing, and depreciation. For Kallangur tradies and service businesses, this can be worth thousands.

3. Professional Development and Training

Courses, workshops, seminars, and even online learning subscriptions are deductible when they relate to your current business activities. This includes industry conferences, compliance training, and professional memberships. Many business owners attend events like Brisbane’s Small Business Expos but forget to claim the registration fees and travel costs.

4. Bad Debts Written Off

If you’ve invoiced a client and they haven’t paid — and you’ve made reasonable efforts to collect — you can write off the bad debt as a tax deduction. This is particularly relevant for businesses in the construction and trades sector, where payment disputes are common. The key requirement is that the debt must have been previously included in your assessable income.

5. Instant Asset Write-Off

The instant asset write-off provisions allow eligible businesses to immediately deduct the cost of qualifying assets, rather than depreciating them over several years. As of the 2025-26 financial year, the threshold and eligibility criteria should be checked with the ATO’s latest guidance. Common claims include computers, tools, vehicles, and office fit-outs.

6. Superannuation Contributions for Yourself

If you’re a sole trader or partner, your personal super contributions are tax-deductible up to the concessional contributions cap (currently $30,000 per year including any employer contributions). This is one of the most powerful tax planning strategies available, yet many self-employed Queenslanders overlook it entirely. It simultaneously reduces your tax bill and builds your retirement savings.

7. Technology and Software Subscriptions

Cloud accounting software (Xero, MYOB, QuickBooks), project management tools, CRM systems, website hosting, domain renewals, and cybersecurity software are all deductible. In today’s digital business environment, these subscriptions add up quickly — and they’re 100% deductible when used for business purposes. Even your business mobile phone plan qualifies.

8. Insurance Premiums

Business insurance premiums are fully deductible, including public liability, professional indemnity, income protection (within limits), business interruption insurance, and workers’ compensation. Many small business owners in the Moreton Bay region carry multiple policies but don’t claim them all. Review your insurance schedule before lodging your return.

9. Marketing and Advertising Costs

Every dollar you spend promoting your business is tax-deductible: Google Ads, Facebook advertising, business cards, signage, website development, SEO services, branded uniforms, and promotional merchandise. If you sponsor a local Griffin or North Lakes sports team, that sponsorship is also deductible as advertising.

10. Accounting and Tax Agent Fees

Here’s the one that surprises people: the cost of having your tax return prepared by a registered tax agent is itself tax-deductible. This includes fees for tax advice, BAS preparation, financial statement preparation, and ongoing monthly accounting services. Think of it this way — professional tax advice pays for itself through the deductions you’d otherwise miss.

How to Maximise Your Deductions This Financial Year

Claiming all your legitimate deductions isn’t about being aggressive — it’s about being thorough. Here’s what I recommend to every Brisbane small business client:

• Keep digital records: Use cloud accounting software to capture expenses in real-time
• Photograph receipts: The ATO accepts digital copies, so snap photos of receipts before they fade
• Separate business and personal: Use a dedicated business bank account and credit card
• Review quarterly: Don’t wait until June to think about deductions — review your expenses each BAS quarter
• Work with a CPA: A qualified accountant who understands your industry will identify deductions you’d never think of

Don’t Pay More Tax Than You Need To

As a CPA working with small businesses across Brisbane’s north — from Dakabin to Petrie and everywhere in between — I’ve helped hundreds of business owners claim thousands in deductions they didn’t know existed. The difference between a basic tax return and a strategically prepared one can be significant.

If you’re not sure whether you’re claiming everything you’re entitled to, get in touch with Tax Serve for a comprehensive review. We offer tailored business accounting packages that include proactive tax planning — not just end-of-year compliance.