GST-Free vs Input-Taxed vs Taxable Supplies in Australia: What Every Business Owner Must Know

The Three GST Supply Types — Side by Side

Australia's GST system under the A New Tax System (Goods and Services Tax) Act 1999 classifies every supply your business makes into one of three categories. Getting this wrong doesn't just create a messy BAS — it creates an ATO liability or an overstated refund claim that can trigger a review.

Taxable Supplies — The Default Category

If a supply doesn't meet the conditions for GST-free or input-taxed, it is taxable. Most ordinary business income is taxable.

Examples of taxable supplies

• Sale of goods in Australia (clothing, furniture, equipment)
• Professional services (accounting, consulting, law)
• Commercial property rent and commercial lease income
• Building and construction work
• Restaurant and café meals (prepared food)
• Alcohol, tobacco, and confectionery
• Digital services sold to Australian consumers by overseas suppliers (since 2017)
• New residential property sales (GST applies; going-concern exemption may apply to business sales)

ITC entitlement on taxable supplies

If you make taxable supplies, you can claim the full GST on your business costs — rent, equipment, subscriptions, contractor fees, advertising. Your ITC is generally 1/11th of the cost inclusive of GST.

GST-Free Supplies — No GST But Full ITC Access

GST-free supplies are zero-rated — the customer pays no GST. But unlike input-taxed, you retain the right to claim input tax credits on all costs that relate to making those supplies. This makes exporting from Australia extremely tax-efficient from a GST perspective.

The main GST-free categories

Why GST-free is good for exporters

If your business exports software, professional services, or physical goods to overseas clients, those sales are GST-free. But every cost you incur in Australia — office rent, staff, subscriptions — is taxable supply that includes GST, which you can fully reclaim. Many Australian exporters are in a net GST refund position every quarter.

Input-Taxed Supplies — The Most Misunderstood Category

Input-taxed supplies are the most frequently misclassified in Australian bookkeeping. The name is counter-intuitive: "input-taxed" doesn't mean you pay tax on your inputs — it means your ability to claim ITCs on inputs is blocked (taxed away).

The main input-taxed categories

Residential property — the biggest ITC trap

Property investors are the most common victims of this misclassification. If you own a residential rental property, the rent you receive is input-taxed. That means:

• You do NOT charge your tenant GST on rent
• You CANNOT claim GST credits on repairs, property manager fees, council rates, water, or insurance
• You should not even be GST-registered if your only income is residential rent (unless you have other taxable supplies over the A$75,000 threshold)

Mixed Supplies — When Your Business Has Multiple Categories

Many Australian businesses make both taxable and input-taxed supplies. This requires apportionment — you can only claim ITCs on the proportion of costs that relate to your taxable supplies.

Common mixed-supply situations

• Commercial + residential property: A building with commercial tenants (taxable) and residential tenants (input-taxed). Common costs (building manager, insurance) must be apportioned.
• Financial advisory business: The firm charges fees for advice (taxable) and earns commissions (financial supply = input-taxed). Overhead costs must be split.
• NDIS provider: Some NDIS supports are GST-free; others are taxable. Each line item must be classified correctly.
• Grocery store with café: Basic food is GST-free; hot food and café meals are taxable. The business must track each sale type separately.

Apportionment methods accepted by ATO

How These Categories Appear on Your BAS

Correct BAS reporting requires every supply type to flow into the right label. A BAS agent must review this, but your bookkeeper's coding determines the output.

Tax Codes in Xero, MYOB, and QuickBooks for Australian GST

Your bookkeeper sets tax codes at the transaction level. Wrong codes = wrong BAS. Here are the standard codes used in major Australian accounting software:

What an Indian Bookkeeper Does — and What Your BAS Agent Does

There is sometimes confusion about how outsourcing works when GST classification is involved. Here is the clear division:

At Sharma Jyoti and Co, our Indian CA team is trained in Australian GST legislation and works closely with our clients' BAS agents in Australia. We maintain clear coding guides per client, flag any new supply types for review, and provide fully coded books that allow the BAS agent to review and lodge efficiently — typically cutting the BAS agent's time by 60–70%.

Learn more about how we handle outsourced bookkeeping for Australian businesses or read our ATO compliance guide for outsourcing to India. For businesses preparing their BAS each quarter, see our guide to outsourcing BAS preparation to India.

Common GST Coding Mistakes and How to Avoid Them

• Coding residential rent as GST-free instead of input-taxed — Incorrectly claims ITCs on property costs. G4 (input-taxed sales) is the right BAS label.
• Coding export sales as "BAS Excluded" — Removes them from G1 entirely. They must appear in G1 and G2.
• Claiming ITCs on bank charges and loan interest — These are financial supplies (input-taxed). No ITC on bank fees, loan interest, merchant fees.
• Missing the going-concern exemption on business sales — If all conditions are met, GST-free treatment saves the buyer 10% on the purchase price.
• Not apportioning overheads for mixed businesses — Common costs like office rent, phone, software must be split if you make both taxable and input-taxed supplies.
• Treating NDIS supports as all-GST-free — Only some NDIS supports qualify as GST-free (broadly, those that are "appropriate treatment" by registered providers). Others are taxable.
• Confusing "out of scope" with "input-taxed" — Out-of-scope transactions (wages, ATO payments, bank transfers) do not appear on BAS at all. Input-taxed sales appear in G1/G4.