As a sole trader, your business income is treated as your personal income for tax purposes. This means you report your business profit on your personal tax return and pay income tax at your marginal rate. While the simplicity of a sole trader structure is appealing, it comes with specific tax obligations including quarterly instalments, GST/VAT (if registered), record keeping and potentially paying both income tax and self-employment contributions.
Keep meticulous records of all business income and expenses
Separate personal and business bank accounts for clean tracking
Track all deductible expenses - vehicle, home office, supplies, insurance
Make quarterly tax instalment payments if required
Lodge your GST/VAT returns if registered
Prepare a profit and loss statement for your business
Complete your personal tax return including the business schedule
Pay any tax owing and plan for next year's obligations
Businesses in Australia operating under the GST + BAS system must meet these compliance requirements set by ATO:
Mixing personal and business expenses in the same account
Not setting aside money for income tax throughout the year
Forgetting to claim all legitimate business deductions
Not keeping adequate records of cash transactions
Not understanding your obligation to pay quarterly tax instalments
Failing to register for GST/VAT when turnover exceeds the threshold
SortBooks connects to your Xero account and handles GST + BAS compliance automatically. Every transaction is categorised with the correct tax treatment, bank feeds are reconciled in real-time and your ATO-ready reports are always up to date. No more last-minute scrambles or manual data entry.
Every transaction gets the correct GST + BAS code automatically - 97%+ accuracy from day one.
Generate compliant reports for ATO at any time - no reconciliation needed.
Never miss a filing deadline. SortBooks tracks your obligations and reminds you in advance.
Sole trader business profit is added to your other personal income and taxed at your marginal income tax rate. You may also need to pay self-employment contributions (like Medicare levy in Australia, National Insurance in the UK, or self-employment tax in the US).
In most countries, yes - if your expected tax bill exceeds a certain threshold. Australia: PAYG instalments. US: estimated quarterly tax payments. UK: payments on account. These prevent a large tax bill at year-end.
SortBooks is purpose-built for sole traders. It automatically categorises business transactions, separates personal from business spending, tracks deductible expenses and generates the reports your accountant needs for your tax return - starting at just $49/month.
Join thousands of Australia businesses using AI to handle their bookkeeping and tax compliance.