Can I Do My Own Taxes for My Business? A Guide for Australian Entrepreneurs in 2025

Author

Gracie Sinclair

Date

22 May 2025
A planner, eyeglasses, and pens rest on a laptop keyboard next to tax forms and sticky notes labeled ‘Tax,’ ‘Annual,’ ‘Co. Report,’ and ‘Deadline.’.
The information provided in this article is general in nature and does not constitute financial, tax, or legal advice. While we strive for accuracy, Australian tax laws change frequently. Always consult with a qualified professional before making decisions based on this content. Our team cannot be held liable for actions taken based on this information.
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Facing the Music: The DIY Tax Decision for Business Owners

Standing at the crossroads of tax season, you're asking yourself that burning question: "Can I do my own taxes for my business?" It's like deciding whether to produce your own album or hire a professional studio—both paths have their merits, costs, and potential pitfalls.

In Australia's ever-evolving tax landscape, many business owners are tempted to take the DIY route, seeking to save on accountant fees while maintaining creative control over their financial narrative. Yet for others, the complexity of tax regulations hits like a challenging time signature—difficult to master without professional guidance.

This comprehensive guide cuts through the noise, providing Sydney business owners with the unfiltered truth about self-managing their tax obligations in 2025. We'll break down which business structures can realistically go solo, which tools make the journey smoother, and when it's time to call in the financial equivalent of a sound engineer to prevent your tax performance from falling flat.

What Business Structure Are You Playing With?

Your business structure fundamentally determines the complexity of your tax obligations—much like how a solo acoustic set differs from orchestrating a full band performance.

Sole Traders: The Solo Artists of the Business World

If you're operating as a sole trader, you're in luck. The ATO has designed a relatively straightforward process for you:

  • You report business income and expenses directly within your individual tax return
  • The myTax platform pre-fills data from employers, banks, and government agencies (typically available by late July)
  • You can claim the Small Business Income Tax Offset (up to 16% of net business income, capped at $1,000) if your aggregated turnover is under $5 million

For most sole traders with straightforward affairs, DIY tax preparation is comparable to a well-rehearsed solo—challenging but entirely achievable with practice and the right tools.

Partnerships: The Duets and Bands

Partnerships introduce an additional layer of complexity:

  • You must lodge a separate partnership tax return (Form NAT 0656)
  • Each partner must also lodge their individual tax returns
  • Partners need distribution statements outlining their share of income and deductions
  • Non-commercial loss rules may apply if your partnership activities aren't profitable

The tax rhythm for partnerships is like coordinating a band—each member must play their part correctly for the overall performance to succeed. While still manageable for DIY, the risk of hitting a wrong note increases.

Companies: The Symphony Orchestras

Companies face the most rigorous tax requirements:

  • Adherence to the 25% corporate tax rate (for base rate entities)
  • Detailed reporting of franking credits, capital gains, and shareholder distributions
  • Mandatory electronic lodgment via Standard Business Reporting (SBR)-enabled software
  • Varying deadlines based on fiscal year-end

The corporate tax landscape is akin to conducting a complex symphony—technically possible to self-manage, but requiring significant expertise, time investment, and attention to detail that might be better outsourced to specialists.

What Equipment Do You Need for the DIY Tax Performance?

Just as musicians need instruments, DIY tax preparers need the right tools. The ATO and various software providers offer a range of options that can help you hit the right notes.

myTax: The ATO's Official Platform

The myTax platform is like having sheet music that's partially filled in:

  • Automatically imports income data from employers, banks, and government agencies
  • Includes built-in calculators for depreciation, home office expenses, and vehicle claims
  • Determines eligibility and calculates your Small Business Income Tax Offset

To access myTax, you'll need to link your myGov account to the ATO—a crucial first step for any DIY tax performance.

Accounting Software: Your Digital Backing Band

Cloud-based accounting platforms provide real-time support for your tax obligations:

  • Track GST and PAYG liabilities as you record transactions
  • Generate pre-filled BAS and IAS reports
  • Automate depreciation schedules for eligible assets under $20,000 (instant asset write-off)

This technology acts like a reliable backing band, keeping the rhythm consistent throughout the year rather than scrambling at tax time.

The ATO Mobile App: Tax Management On-The-Go

For recording expenses while on tour (or just running your business), the ATO app offers:

  • myDeductions Tracker: Records expenses and mileage via GPS, with direct upload to myTax
  • Payment Plan Setup: Negotiates installment arrangements for outstanding tax debts
  • Superannuation Monitoring: Tracks employer contributions and unpaid super liabilities

This mobile toolset ensures you don't miss capturing important deductions when you're away from your desk.

How Complex Is Your Financial Setlist?

The complexity of your business transactions significantly impacts whether DIY tax preparation is viable—like the difference between playing a three-chord progression and executing a complex jazz improvisation.

DIY-Friendly Financial Situations

Business CharacteristicDIY ViabilityNotes
Sole TraderHighStraightforward reporting via myTax
Limited number of transactionsHighEasier to track and categorize
Single revenue streamHighSimpler income reporting
Below GST threshold ($75,000)HighNo need for quarterly BAS statements
No employeesHighNo PAYG withholding requirements
Limited business assetsHighSimpler depreciation tracking
Australian operations onlyHighNo international tax complications

Scenarios Where Professional Help Shines

Business CharacteristicDIY ViabilityNotes
Company structureLowComplex compliance requirements
Multi-state operationsLowVAT implications for interstate sales
International transactionsLowTransfer pricing and foreign income complications
Asset disposals (CGT events)LowComplex capital gains calculations required
High growth/revenueMediumTime better spent on core business activities
Previous ATO issuesLowHigher risk of audit triggers
Multiple revenue streamsMediumMore complex income categorization

What Are the Risks of Being Your Own Tax Roadie?

Going DIY with your business taxes carries certain risks—much like being both the performer and sound technician at your own gig.

Audit Triggers and Compliance Risks

The ATO's spotlight might shine on you if they spot:

  • Disproportionate deductions (claiming 100% business use for mixed-use assets like home internet)
  • Non-commercial losses (repeated losses from hobby businesses classified as commercial ventures)
  • Mismatched data (discrepancies between your reported income and ATO pre-filled data)

These discrepancies can trigger audits faster than a missed beat draws attention during a live performance.

The Time-Cost Equation

Research shows sole traders spend an average of 20 hours annually on tax compliance—time diverted from core business activities. For partnerships or more complex structures, this can exceed 50 hours per year.

Consider whether your time might be better spent creating value in your business rather than navigating tax complexities—similar to deciding whether to spend your hours practicing your craft or learning sound engineering.

Penalty Risks for Wrong Notes

Missing the mark on your tax obligations can be costly:

  • Late lodgment incurs penalties of $313 per 28-day period (capped at $1,565)
  • Negligent misstatements attract fines of 75% of the shortfall tax
  • Missing BAS deadlines incurs failure-to-lodge penalties of $313 per statement

These penalties can quickly erase any savings from avoiding professional fees.

When Should You Bring in a Financial Producer?

Even the most talented musicians recognize when they need a producer to perfect their sound. Similarly, certain business scenarios clearly benefit from professional tax assistance.

Complex Financial Compositions

Consider professional help when dealing with:

  • Business restructuring or expansion
  • Capital gains events (selling business assets)
  • Significant changes in revenue or operations
  • Recovery from previous tax issues
  • International transactions or revenue
  • Strategic tax planning for growth

The ROI of Professional Tax Management

For businesses earning over $250,000 annually, professional tax services often yield net savings through:

  • Optimized deductions you might miss
  • Strategic timing of expenses and income
  • Reduced audit risk and professional representation if needed
  • Peace of mind and freed-up time to focus on your core business

Registered tax agents typically charge $200–$500 for sole trader returns and $1,000–$5,000 for company returns—fees that are themselves tax-deductible in the following financial year.

Finding Your Tax Rhythm: DIY or Professional?

Successfully managing your business taxes requires finding the right approach for your specific situation. For many small business owners, the optimal solution is a hybrid approach:

  • Handle routine bookkeeping and record-keeping internally
  • Use cloud accounting software to maintain real-time financial visibility
  • Consider professional review of your self-prepared returns
  • Engage specialists for complex scenarios or strategic planning
  • Stay educated through ATO webinars and resources

This balanced approach provides the benefits of hands-on financial management while minimizing risks through strategic professional input—like being the songwriter who collaborates with a producer for the final mix.

Regardless of which path you choose, maintaining meticulous records is non-negotiable. The ATO mandates five-year retention of income records, expense documentation, and relevant business data—whether you store these digitally or physically.

Ready for Your Tax Performance?

Whether you choose to go solo on your business taxes or bring in professional support, understanding your obligations and options empowers you to make decisions that support your business growth while maintaining compliance.

For sole traders with straightforward finances, the DIY approach using ATO digital tools can be both achievable and cost-effective. However, as your business grows in complexity, the value of professional guidance increases exponentially—not just in minimizing tax liabilities, but in providing strategic insights that can amplify your success.

Ready to crank your finances up to 11? Let's chat about how we can amplify your profits and simplify your paperwork – contact us today.

What penalties might I face if I make mistakes on my business tax return?

In Australia, penalties for tax errors vary based on culpability. Simple mistakes may result in interest charges on underpaid tax, while negligent misstatements can attract penalties of 75% of the shortfall amount. More serious cases of intentional disregard for tax law can incur penalties up to 100% of the tax shortfall. Additionally, late lodgment penalties of $313 per 28-day period (capped at $1,565) apply regardless of whether you owe tax.

Do I need to register for GST if I'm doing my own taxes?

GST registration becomes mandatory once your business turnover exceeds $75,000 annually. If you're below this threshold, registration is optional. Once registered, you must lodge quarterly Business Activity Statements (BAS) detailing your sales, purchases, and GST collected. The complexity of GST compliance is a key factor in deciding whether DIY tax management remains viable for your business.

How much time should I allocate for preparing my business taxes myself?

Research indicates sole traders spend approximately 20 hours annually on tax compliance activities. This includes ongoing record-keeping, quarterly PAYG installments (if applicable), and annual return preparation. More complex business structures like partnerships or companies typically require 50+ hours annually. Consider whether this time investment represents the best use of your entrepreneurial energy compared to focusing on revenue-generating activities.

Can I use accounting software instead of a tax agent for my business?

Modern accounting software significantly simplifies tax preparation through ATO integration, automated categorization, and pre-filled forms. However, these tools primarily handle data organization rather than providing tax strategy or compliance advice. While they can make DIY tax management more feasible, they don't replace the strategic guidance and liability protection that comes with professional tax services, particularly for complex business structures or high-value operations.

What records do I need to keep if I'm doing my own business taxes?

The ATO requires you to maintain comprehensive records for five years, including: all income documentation (invoices, receipts, bank statements); expense evidence (categorized by type); asset purchase information for depreciation claims; vehicle logbooks if claiming car expenses; and working papers showing how you calculated various deductions. Digital record-keeping via cloud accounting software is acceptable provided you maintain secure backups and can produce documentation if audited.

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