Small Business Taxes in Australia: A Complete Beginner's Guide

Understanding the Australian Tax System

Australia has a relatively straightforward tax system for small businesses, but it still catches many beginners off guard. From GST registration to quarterly BAS lodgements, there's a lot to learn.

The Australian Tax Office (ATO) offers generous concessions for small businesses — but you need to know about them to claim them. This guide will show you how to keep more of what you earn.

Income Tax: How It Works

Personal Tax Rates (Sole Traders)

As a sole trader, your business income is personal income. You pay tax at individual rates.

2024-25 Tax Rates (Residents):

• 0%: $0 - $18,200 (tax-free threshold)
• 16%: $18,201 - $45,000
• 30%: $45,001 - $135,000
• 37%: $135,001 - $190,000
• 45%: Over $190,000

Plus Medicare levy of 2%.

Company Tax Rates

Base rate entity (small business):

• 25% if turnover under $50 million

Standard rate:

• 30% for larger companies

The 25% rate makes incorporation attractive for higher earners.

Calculate your tax with our salary calculator on Tuble.vip.

GST: The $75,000 Question

When to Register

GST registration is mandatory when:

• Annual turnover reaches or exceeds $75,000
• You provide taxi or ride-sharing services
• You want to claim fuel tax credits

GST Rate

Australia has a single GST rate: 10%

How GST Works

• Collect 10% GST on sales (output tax)
• Claim back GST paid on business purchases (input tax credits)
• Pay the difference to ATO (or receive refund if credits exceed collections)

Example:

You sell $110,000 worth of services (including $10,000 GST)

You buy $55,000 in supplies (including $5,000 GST)

You remit: $10,000 - $5,000 = $5,000 to ATO

Use our GST calculator for quick calculations.

Should You Register Voluntarily?

Yes, if:

• Your clients are GST-registered businesses (they can claim your GST)
• You have significant GST on purchases to claim back
• You want to appear more established

No, if:

• Your clients are mostly consumers (they can't claim GST)
• You have few business purchases
• You're well under the threshold

BAS: Business Activity Statements

What Is BAS?

The BAS is your regular report to the ATO covering GST, PAYG instalments, and PAYG withholding.

Lodgement Frequency

Quarterly (most small businesses):

• Q1: Due October 28
• Q2: Due February 28
• Q3: Due April 28
• Q4: Due July 28

Monthly (if turnover over $20 million or by choice):

• Due 21st of the following month

Simpler BAS

Small businesses (turnover under $10 million) can use Simpler BAS:

• Report only total sales and GST collected
• Report total purchases and GST credits
• No more G1-G20 labels

PAYG Instalments: Pay As You Go

How It Works

If your income tax liability exceeds $1,000 from business income, the ATO will put you on PAYG instalments.

Calculation Methods

Instalment amount method: ATO calculates based on prior year

Instalment rate method: Apply a percentage to current quarter income

Varying Instalments

You can vary instalments if your income changes significantly, but penalties apply if you underestimate.

Superannuation: Your Future Self

Sole Traders

Not legally required to pay super for yourself, but it's highly recommended:

• Tax-deductible contributions (up to $30,000/year concessional cap)
• 15% tax inside super vs your marginal rate outside
• Compounds significantly over time

Employing Staff

If you have employees, you must pay super:

• 11.5% of ordinary time earnings (2024-25)
• Due quarterly (28 days after quarter end)
• Penalties for late payment are severe

Small Business Concessions

Instant Asset Write-Off

Small businesses can immediately deduct assets costing under $20,000 (threshold varies — check current rules).

Simplified Depreciation

• Pool assets costing over the threshold
• Claim 15% first year, 30% subsequent years
• Write off pool when balance falls below threshold

Small Business Income Tax Offset

Sole traders with business income under $5,000 get a tax offset of up to $1,000.

Capital Gains Tax Concessions

Four powerful concessions for selling your business:

• 15-year exemption
• 50% active asset reduction
• Retirement exemption
• Rollover

Essential Business Deductions

Home Office

Fixed rate method: 67 cents per hour (covers all running expenses)

Actual cost method: Calculate proportion of utilities, rent, depreciation

Motor Vehicle

• Logbook method: Actual expenses × business percentage
• Cents per kilometre: 85 cents/km (max 5,000 km)

Professional Services

Accountants, lawyers, and consultants are fully deductible. Find accounting services on Tuble.vip.

Training and Development

Courses directly related to current work are deductible. Career change courses are not.

Superannuation Contributions

Personal super contributions are tax-deductible (within caps).

Record Keeping

ATO Requirements

Keep records for 5 years from when you lodge your return.

Required records:

• Income and sales records
• Expense receipts
• Asset purchases and depreciation schedules
• Motor vehicle logbooks
• BAS lodgement records

Digital Record Keeping

The ATO accepts digital records if they're:

• Clear and complete
• In English (or easily translated)
• Accessible for 5 years

Common Mistakes

Mistake 1: Ignoring the $75,000 Threshold

You must register for GST before exceeding $75,000, not after.

Solution: Track your rolling 12-month turnover monthly.

Mistake 2: Late BAS Lodgement

Penalties start immediately and compound.

Solution: Set calendar reminders, use accounting software.

Mistake 3: Not Claiming Deductions

Many sole traders miss legitimate deductions.

Solution: Keep receipts, use accounting software, get professional advice.

Mistake 4: Ignoring Super

Missing super payments for employees attracts heavy penalties.

Solution: Automate payments, use SuperStream-compliant software.

Getting Professional Help

When to Use an Accountant

• Setting up your business structure
• First year of business
• Turnover exceeds $100,000
• Considering company structure
• Complex situations

Find qualified accountants on Tuble.vip.

ATO Resources

• myGov/ATO online: Personal and business tax management
• Small business newsroom: Updates and tips
• Tax Time toolkit: Annual guides

Key Deadlines

Sole Traders:

• October 31: Tax return due (or May 15 with tax agent)
• December 1: Tax payment due (if not on PAYG)

Companies:

• February 28: Tax return due for June 30 year-end (or later with agent)

BAS:

• Quarterly: October 28, February 28, April 28, July 28

Super:

• Quarterly: October 28, January 28, April 28, July 28

Use the working days calculator to plan ahead.

Create your business profile on Tuble.vip to connect with Australian business service providers.

Summary

Australian small business taxes revolve around income tax, GST, and BAS lodgement. Register for GST at $75,000, lodge BAS quarterly, and take advantage of small business concessions. The 25% company tax rate and various concessions make Australia relatively business-friendly — if you understand the rules.