How Much Tax Do Sole Traders Pay: 2025–26 Guide

By Panbo Ye, CFP^®, FCPA, SMSF Specialist Advisor · Founder of Everglow · Updated 13 October 2026

Income year covered: Figures in this guide are for the 2025–26 income year (1 July 2025 to 30 June 2026), unless stated otherwise. Checked October 2026.

If you've recently started working for yourself, one of the first unsettling questions is usually simple: how much tax do sole traders pay? You're earning income through your own effort, invoices are going out, expenses are starting to pile up, and tax suddenly feels less like a line on a payslip and more like a responsibility you carry personally.

That feeling is normal. Good operators are often very capable at their profession long before they feel confident about tax. The useful shift is to stop seeing tax as a once-a-year compliance problem and start treating it as part of financial stewardship. When you understand how the calculation works, you make better decisions about pricing, deductions, cash flow, and structure from the beginning.

Written by Panbo Ye, CFP® | FCPA | SSA | Founder, Everglow

Introduction

A new sole trader often starts with a practical skill. A doctor doing consulting work, a designer taking on direct clients, a tradie leaving employment, or a new migrant professional setting up independently. The work itself may be familiar, but the tax side feels unfamiliar because no employer is withholding tax for you anymore.

That’s where clarity matters. A sole trader structure is straightforward to start, but it puts the tax responsibility directly in your hands. If you haven't already, it's worth understanding what a sole trader is in Australia because the structure determines how your business income is taxed, how you report it, and what risks you carry personally.

A sound tax approach starts with a few grounded questions:

• What counts as business income
• What can be claimed as a deduction
• How is the final tax amount worked out
• When does it make sense to review your business structure

You don’t need to memorise the whole tax system. You do need to understand the few principles that affect your decisions every week.

The Core Principle of Sole Trader Tax

The key principle is simple. You and the business are the same tax entity.

That means there isn't a separate business tax rate for sole trader profit. Your business profit becomes part of your own personal taxable income. If the business does well, your personal tax position changes with it. If the business has deductible expenses, they reduce the profit that flows through to you.

A simple way to think about it is this. The business is the activity, but the tax bill lands with the individual. There is no legal wall between the two in the way there can be with a company.

Why this principle matters

Once this clicks, a lot of confusion falls away.

• Profit matters more than turnover. Tax is driven by what remains after allowable deductions.
• Personal tax rates apply. You don't get a standalone sole trader tax scale.
• Record-keeping matters early. Every valid deduction affects the amount that is ultimately taxed.
• Cash flow needs planning. Because tax isn't automatically withheld, you need to reserve funds yourself.

If you're unsure what can be claimed, a practical starting point is to review what is tax deductible and then map those categories to the way your business operates.

Practical rule: treat sole trader profit as money that is partly yours to use and partly yours to protect for tax. Mixing those two ideas is where cash flow stress often begins.

How Much Tax Do Sole Traders Pay The Calculation

Tax usually feels abstract until the first profitable quarter ends and the cash in the account starts to look like spending money. That is the point where disciplined calculation matters. A sole trader who understands the mechanics early can make better decisions on drawings, pricing, and how much to set aside for the ATO.

The calculation itself is straightforward:

1. Add up business income.
2. Subtract allowable deductions.
3. Work out taxable income.
4. Apply individual marginal tax rates.
5. Allow for Medicare levy and any offset you are eligible to claim.

What matters in practice is doing each step cleanly. Tax for a sole trader is not just a form-filling exercise. It is one of the clearest measures of how efficiently the business is being run.

Start with business income

Assessable income is the income earned from your business before deductions are claimed. For many sole traders, that includes client fees, project payments, retainers, and other amounts earned through normal trading activity.

The technical rule is simple. The practical challenge is completeness.

Income records need to match invoices issued, payments received, and bank deposits cleared. If those pieces do not align, the tax calculation is weaker from the start, and cash flow planning becomes guesswork.

Subtract allowable deductions

Taxable income represents your total business income minus allowable deductions. While that sounds basic, stewardship becomes essential during this calculation. Good deduction management does not involve stretching claims. It requires claiming only what the business is properly entitled to receive, supported by records that can justify the return.

Common categories include:

• Professional costs such as registrations, insurance, and memberships
• Software and subscriptions used in the business
• Office and admin expenses tied to earning income
• Travel or vehicle costs where there is a clear business connection
• Accounting and bookkeeping fees related to business compliance and reporting

The test is not whether the expense was useful or convenient. The test is whether it was incurred in earning assessable income and supported by proper evidence.

If your records tend to pile up until year end, this guide on managing self-employed tax deductions is a practical reference for building a better receipt and categorisation process.

One part of the calculation that often causes confusion is the tax-free portion of personal income. Everglow explains that clearly in its guide to the tax-free threshold in Australia.

Apply the personal tax rates

Sole traders pay tax at individual marginal rates, not under a separate business tax scale. For the 2025-26 financial year, the rate schedule runs from 0% on the first $18,200 up to 45% on income above $190,001, with a 2% Medicare levy added, as outlined in this summary of 2025-26 Australian sole trader tax rates.

That same reference also states that eligible sole traders may access the small business tax offset, described there as a 16% refund on net small business income up to a maximum of $1,000 each year.

The practical reading is:

• The first slice of taxable income is tax-free
• Higher portions are taxed at higher rates
• The Medicare levy is added separately
• An offset may reduce the final bill if eligibility rules are met

A common mistake is assuming that once income crosses a threshold, the whole amount is taxed at that higher rate. That is not how the system works. Only the part of income within each bracket is taxed at that bracket's rate.

This is why sole traders need to treat tax calculation as a planning tool. Once profit rises, the after-tax position changes. That affects how much can safely be drawn from the business, what buffer should stay in the account, and whether the current structure still suits the business.

A simple example shows the mechanics. If a sole trader earns $80,000 in business income and has $20,000 in allowable deductions, taxable income is $60,000. Tax is then calculated in layers across the relevant brackets, with Medicare levy considered after that and any available offset assessed at lodgement.

Accurate tax calculation protects more than compliance. It protects working capital, reduces nasty surprises, and gives you a clearer view of whether the business structure still fits where the business is heading.

A Worked Example Dr. Anya Sharma Consultant

Dr Anya Sharma is a fictional example used to show how the rules work. She is not an Everglow client.

Dr. Anya Sharma runs an allied health consulting practice in Sydney as a sole trader. The year has been profitable, and before she lodges her return she wants one clear answer. How much of that profit is hers to keep, and how much needs to be reserved for tax?

That question matters well beyond compliance. A sole trader who can estimate tax properly is in a better position to manage drawings, protect cash flow, and judge whether the current business structure still suits the practice.

Dr. Sharma's Sole Trader Tax Calculation Example

With taxable income at $60,000, the income tax calculation is applied progressively across the relevant brackets already outlined earlier in the article. The full $60,000 is not taxed at one rate.

That gives Dr. Sharma a solid working figure. It is not yet the whole picture.

As noted earlier, Medicare levy may apply and an eligible sole trader may also receive the small business tax offset. The final amount payable can shift once the full return is prepared, especially if there is other income, private health considerations, reportable super contributions, or offset eligibility issues in the background.

This is why I tell clients to use a worked example as a planning estimate, not a spending licence. If Dr. Sharma sees $8,788 and assumes the rest of the profit is free cash, she risks drawing too much from the business before levy, offsets, and any instalment obligations are settled. That is how a profitable year turns into a tight bank balance.

A careful review usually comes back to a few practical checks:

• Business income has been captured in full
• Deductions are legitimate and well supported
• Private costs have not been mixed into business claims
• Cash has been set aside for tax, not just recorded on paper

For sole traders who also need to plan beyond annual income tax, it helps to understand how GST reporting fits into the same cash flow discipline. This guide to sole trader GST obligations is a useful companion piece. If quarterly payments may apply, this overview of estimated taxes for small businesses is also worth reviewing.

A worked example shows the method. Good stewardship comes from using that method early enough to make better decisions during the year, not after the year has already closed.

Your Other Financial Obligations GST PAYG and Super

A sole trader can finish the year with a solid profit and still feel short of cash because three obligations were never treated separately. GST was spent as if it were revenue. PAYG instalments arrived with no funds set aside. Super was postponed again.

That pattern is common. The issue is rarely the calculation on its own. It is the habit of treating every dollar that lands in the business account as available to spend. Good tax management starts with separating what belongs to the business owner, what belongs to the ATO, and what should be reserved for future retirement savings.

GST and BAS

GST changes the way cash should be viewed. If you are registered, part of what you collect from customers is not business income in any practical sense. It is money you will later report and remit through your BAS.

If you want a practical refresher on registration, reporting, and thresholds, this guide to sole trader GST obligations is a useful reference.

From a stewardship perspective, the main discipline is straightforward:

• Set prices with GST in mind where applicable
• Keep sales and expense records current, not reconstructed later
• Treat GST collected as reserved cash
• Make BAS preparation part of your monthly process

Businesses usually handle BAS more calmly when bookkeeping is routine. They handle it badly when receipts, invoices, and bank coding are left for quarter end.

PAYG instalments

Sole traders do not usually have tax withheld from business income as they earn it. That is why PAYG instalments can catch people off guard. Once the ATO places you into the instalment system, quarterly payments become part of the cash flow cycle, not an occasional surprise.

The practical trade-off is simple. Paying instalments through the year can feel restrictive in the short term, but it reduces the risk of a much larger bill building in the background. Many clients do better when they transfer a set percentage of each payment they receive into a separate tax account and review that balance each quarter.

For a general business-oriented explanation of the cash flow logic behind prepaying tax through the year, this guide to estimated taxes for small businesses gives a useful conceptual overview.

Superannuation for yourself

A sole trader is generally responsible for their own retirement savings. No employer is making compulsory contributions on your behalf, so the decision depends on profit, cash flow, and discipline.

That freedom cuts both ways.

Useful habits include:

• Choose a contribution amount or percentage that fits current cash flow
• Make contributions regularly instead of waiting for a strong month
• Keep tax savings and super savings in separate accounts or categories
• Review contributions when profit rises or falls

Owners who stay on top of tax but ignore super often discover they have built a business income without building personal long-term security. Financial stewardship means managing both.

Planning for Growth When to Look Beyond the Sole Trader Structure

A common turning point looks like this. The business is producing stronger profit, cash reserves are building, and the owner starts asking a different question. Not "What do I owe this year?" but "Is this still the right structure for where the business is heading?"

At the start, the sole trader model often makes sense. It is simple to run, inexpensive to maintain, and easy to understand. As profit grows, that simplicity can start to hide bigger planning questions around tax, asset protection, retained earnings, and how the business will fund its next stage.

For the 2025-26 financial year, eligible small business companies that qualify as base rate entities pay a flat 25% company tax rate, while other companies pay 30%, compared with sole traders whose marginal rates can reach 45% plus Medicare levy, according to this summary of Australian company and individual tax rates.

That source also states that a company must have aggregated annual turnover below $50 million and derive no more than 80% of income from passive sources to qualify as a base rate entity.

When structure starts to matter more

Structure becomes a business planning decision once profit is consistently strong or the owner wants the business to do more than pass income through to them personally.

A review usually becomes sensible when:

• Profit is rising and staying high
• You want clearer separation between business and personal affairs
• You expect to retain funds in the business
• You are taking on more commercial risk
• You want a structure that supports future growth or investment

The same source notes that for the 2025-26 financial year, a sole trader earning $200,000 faces progressively higher individual rates, while a qualifying company earning the same amount pays the flat company rate. It also notes that the 16% rate on income between $18,201 and $45,000 is legislated to reduce to 15% from 1 July 2026, and then to 14% from 1 July 2027, based on changes referred to in that source.

Those future changes matter, but they do not change the broader planning issue. Tax calculation is part of financial stewardship. The way profits are taxed affects how much capital stays available for reinvestment, debt reduction, reserves, and the owner's personal wealth building.

A company can improve tax outcomes in some cases, especially where profits are being retained rather than fully drawn each year. That benefit comes with trade-offs. There are extra reporting obligations, separate legal duties, setup costs, and a different approach to paying yourself. Trusts can also be useful in the right circumstances, but only where the income pattern, family situation, and long-term objectives justify the added complexity.

Owners planning the next stage should assess structure alongside pricing, cash flow, staffing, and investment decisions. This guide on how to grow a small business helps frame that broader discussion. Where specialist support is needed, firms such as Everglow Prosperity provide integrated tax, accounting, and advisory support for business owners assessing those trade-offs carefully.

Good structuring is rarely about chasing a headline tax outcome. It is about choosing a framework that supports profit, control, and long-term plans.

Risks Responsibilities and Your Next Steps

The flexibility of being a sole trader comes with direct responsibility. The business is not separate from you, and that has legal and practical consequences.

The most significant risk is unlimited liability. If the business incurs debts or legal liabilities, your personal assets may be exposed. That doesn't mean a sole trader structure is wrong. It means the simplicity must be weighed against the level of risk you are carrying.

Record-keeping is the other discipline that shapes outcomes. Good records support deductions, make BAS and tax work smoother, and give you a clearer view of whether the business is producing healthy profit. Poor records usually create stress at the exact moment you most need clarity.

Practical next steps

1. Separate your banking early. Use a dedicated business account so income and expenses aren't mixed with private spending.

2. Build a consistent record system. Use accounting software, store receipts properly, and reconcile transactions regularly rather than waiting until year end.

3. Reserve money for tax as you go. Because tax often isn't withheld automatically, set aside part of collections so quarterly or annual obligations don't catch you off guard.

4. Review deductions before the year closes. Don't assume every business-looking expense is deductible. Check that claims are supportable and tied to earning income.

5. Revisit your structure when profit or risk changes. The right structure at the start may not be the right one later. If you need a discussion specific to your situation, you can contact Everglow.

Sole trader tax isn't just a compliance task. It's a practical discipline that affects cash flow, risk, and long-term business health. The better you understand the calculation, the better you can steward the income you work hard to earn.

If you would like clarity on how these principles may apply to your own circumstances, you may wish to speak with a qualified adviser. You can contact Everglow on 1300 913 929 or email contact@everglow.au to arrange a discussion.

If you prefer to book directly, you may also schedule a meeting with Panbo online via Calendly: Book a meeting with Panbo.

General Advice Warning: The information contained in this article is general in nature and does not take into account your personal objectives, financial situation, or needs. Before acting on any information, you should consider whether it is appropriate for your circumstances and seek personal financial, tax, or legal advice from a qualified professional.