Background: What’s Changing on 1 July 2026
The Treasury Laws Amendment (More Cost of Living Relief) Act 2025 introduced new personal income tax rates for resident taxpayers starting 1 July 2026. (ato.gov.au) Key changes include:
- the 16% rate will reduce to 15% from 1 July 2026;
- further reduced to 14% from 1 July 2027. (ato.gov.au)
The adjusted rate schedule for 2026-27 becomes: 15% up to $45,000; 30% from $45,000 to $135,000; 37% from $135,000 to $190,000; 45% above that. (ato.gov.au)
What Small Businesses Need to Know for Compliance
Whether operating as sole traders, partnerships or small companies, here are steps to stay compliant and maximise benefit:
Review payroll withholding
- Employees previously taxed at 16% on lower income bands may see reduced withholding rates from 1 July 2026. Update payroll systems to ensure withholding aligns with new bracket structures.
- Communicate changes to staff so they understand potential increases in take-home pay.
Update personal tax planning strategies
- For sole traders, reconsider income structuring between individual and business if profit distributions push into higher brackets.
- Superannuation contributions, investment income, and deductions might shift marginal tax effects. Break up income across tax years if possible to benefit from lower rate in new year.
Adjust estimated tax repayments and instalments
- If you pay PAYG instalments, your baseline could be affected by the cut; review estimates to avoid overpayment or underpayment penalties.
- Trusts or entities distributing profits around the tax year-end may need to time distributions to maximise impact.
Ensure systems & accounting software are ready
- Many accounting and payroll systems need updates to tax tables ahead of the rate changes. Test systems before 1 July to avoid errors.
- If using external bookkeepers or payroll services, ensure they’re aware and plan in advance.
Example Scenario
Laura runs a small consulting business as a sole trader. Her taxable income in 2025-26 is $42,000. Under the old bracket, part of her income above ~$30k may be taxed at 16%. But from 1 July 2026, all income above the tax-free threshold up to $45,000 will be taxed at the new 15%.
She can:
- defer discretionary income into the 2026-27 year, aiming to stay within the lower bracket;
- increase contributions to deductible super in 2025-26 to reduce taxable income now;
- check whether she will benefit from reduced PAYG instalments next tax installment period.
Important Dates & Compliance Checklist
- 1 July 2026: New tax rates take effect. Payroll systems must be updated by this date.
- Tax Time 2027: Returns reflecting new brackets.
- Communicate with staff and agents ahead of change.
- Liaise with software vendors to patch rate tables.
Bottom Line
These tax cuts offer a real benefit, especially to small business owners and sole traders. To reap the rewards cleanly, focus on payroll accuracy, tax-year timing, and lawful income-deferral strategies. Compliance effort now prevents headaches later.