GST Compliance Guide for Foreign Companies in Australia

Last Updated: January 22, 2026

TLDR: Key Takeaways

• Registration Threshold: GST registration is mandatory when Australian GST turnover reaches or exceeds $75,000 in a 12-month period
• GST Rate: Australia applies a flat 10% GST on most goods and services
• Registration Timeline: You must register within 21 days of exceeding the threshold
• BAS Lodgement: Most foreign companies lodge quarterly; monthly lodgement required if turnover exceeds $20 million
• Input Tax Credits: Foreign businesses can claim back GST paid on Australian business purchases with valid tax invoices
• Imports: GST applies to most imported goods over $1,000; can be claimed as input tax credits
• Exports: Generally GST-free, but specific conditions must be met
• Penalties: Late BAS lodgement attracts penalties from $330 per 28-day period; shortfall penalties up to 75%

When GST Registration is Required for Foreign Companies

The Goods and Services Tax (GST) is Australia’s broad-based consumption tax of 10% that applies to most goods, services, and other items sold or consumed in Australia. Foreign companies operating in Australia must understand their GST obligations to ensure compliance with Australian tax law. GST is one obligation of several: our full tax compliance guide covers the complete lodgment cycle.

GST Registration Thresholds

The 21-Day Registration Rule

Once your GST turnover reaches or is projected to exceed $75,000, you have exactly 21 days to register for GST. Failure to register within this timeframe can result in penalties and retrospective GST liability.

Voluntary GST Registration

Foreign companies with turnover below $75,000 may choose to register voluntarily if:

• Your customers are other GST-registered businesses who can claim back the GST you charge
• You have significant business expenses that include GST and want to claim input tax credits
• You expect to exceed the threshold soon and want to establish systems early
• Your industry expects suppliers to be GST-registered

How to Calculate GST Turnover

What is Included in GST Turnover

• Sales of goods delivered or collected in Australia
• Services performed in Australia
• Sales of goods located in Australia at the time of supply
• Digital products and services supplied to Australian consumers
• Rental income from Australian commercial property

What is Excluded from GST Turnover

• Input taxed supplies (such as financial supplies and residential rent)
• Supplies not connected with Australia
• Sales of capital assets (in most cases)
• Private sales unrelated to your business

GST Registration Process: Step-by-Step

1. Step 1: Gather Required Documentation – Proof of identity for directors, Certificate of incorporation, ASIC registration certificate, Evidence of Australian business activities
2. Step 2: Apply for ABN – Foreign companies need an ABN before registering for GST
3. Step 3: Choose Your Accounting Method – Cash basis (under $2 million) or Accruals basis
4. Step 4: Select Your Reporting Period – Monthly (over $20 million), Quarterly (default), or Annually (voluntary registration under $75,000)
5. Step 5: Submit Your GST Registration – Online through Business Registration Service, through a tax agent, or by phone
6. Step 6: Receive Confirmation – Start charging GST and claiming input tax credits from registration date

BAS Lodgement Requirements

BAS Lodgement Frequencies

Quarterly BAS Due Dates 2026

• Q1 (Jul-Sep): Due 28 October 2026
• Q2 (Oct-Dec): Due 28 February 2027
• Q3 (Jan-Mar): Due 28 April 2027
• Q4 (Apr-Jun): Due 28 July 2027

Simpler BAS Reporting

Businesses with GST turnover under $10 million can use Simpler BAS with just three fields: G1 (Total sales), 1A (GST on sales), 1B (GST on purchases).

Input Tax Credits for Foreign Businesses

Eligibility for Input Tax Credits

You can claim an input tax credit if:

• You are registered for GST (or required to be registered)
• The purchase was for business use (not private purposes)
• The purchase is not related to making input taxed supplies
• You hold a valid tax invoice (for purchases over $82.50 including GST)
• The supplier actually charged you GST

Common Business Expenses Eligible for ITCs

Special Rules for Imports and Exports

If you sell goods or digital products to Australian consumers from overseas, our selling into Australia GST guide explains the low value imported goods rules and when offshore sellers must register.

GST on Imported Goods

GST on Exported Goods

Exports from Australia are generally GST-free. Conditions that must be met:

• Goods must be exported within 60 days of the earlier of payment or invoice date
• Services must be provided to a non-resident who is not in Australia when performed
• You must maintain export documentation as evidence

Common GST Compliance Mistakes

1. Failing to Register on Time – Missing the 21-day registration deadline
2. Incorrectly Calculating GST Turnover – Including or excluding wrong items
3. Claiming ITCs Without Valid Tax Invoices – Requiring valid invoices for purchases over $82.50
4. Incorrect Treatment of Exports – Assuming all international transactions are GST-free
5. Mixing Personal and Business Expenses – Overclaiming on mixed-use expenses
6. Late BAS Lodgement – Missing deadline triggers automatic penalties
7. Poor Record Keeping – Failing to maintain records for 5 years

Penalties for Non-Compliance

Failure to Lodge Penalty Rates (2026)

Shortfall Penalties

Criminal Penalties for GST Fraud

Deliberate fraud includes substantial financial penalties, imprisonment of up to 10 years, and director liability provisions.

Frequently Asked Questions

Do foreign companies need an ABN to register for GST?

Generally yes. Foreign companies registered with ASIC, having an Australian subsidiary, or carrying on an enterprise in Australia need an ABN for standard GST. Foreign businesses supplying only digital products to Australian consumers may use simplified GST registration without an ABN.

Can a foreign company claim GST refunds if they have no Australian sales?

If your foreign company has no Australian sales and is not registered for GST, you generally cannot claim input tax credits. Certain diplomatic entities may be eligible for GST refunds under specific provisions.

What is the reverse charge mechanism?

The reverse charge mechanism requires the Australian purchaser (rather than the overseas supplier) to account for GST on certain imported services and intangibles. The Australian business includes the GST on their BAS and can generally claim it back as an input tax credit.

Can I backdate my GST registration?

Yes, you can request to backdate your GST registration for up to 4 years. This allows you to claim input tax credits for GST paid on business purchases during the backdated period, but you’ll also need to account for GST on taxable supplies during this time.

How do I cancel my GST registration if my business leaves Australia?

You can cancel your GST registration if you stop carrying on an enterprise in Australia or your turnover falls below $75,000. Cancellation must be done within 21 days of becoming ineligible. Contact the ATO or lodge through the Business Registration Service.

Related Services

• ABN & GST Registration Services – Professional assistance with Australian Business Number and GST registration
• Taxation Services – BAS preparation, annual tax returns, and tax advisory
• Bookkeeping Services – GST tracking, reconciliation, and BAS-ready financial reports

Need Help with GST Compliance?

Navigating Australian GST requirements as a foreign company can be complex. Our team of experienced professionals can help you register for GST, lodge your BAS on time, and ensure full compliance with ATO requirements.

Contact Us for Expert GST Advice

Related Guides

• Foreign Company Registration Complete Guide
• Transfer Pricing Guide for Australia
• ASIC Compliance Calendar 2026

This content is general information only and is not legal, financial or tax advice. Laws and regulations change often. For advice on your circumstances, speak to a qualified adviser.