How to calculate import duty in Australia: a practical guide with worked examples

If you're importing goods into Australia, the first question is always "how much duty will I pay?" The answer depends on three things: what you're importing, where it's coming from, and how much it's worth. That sounds simple, but the details trip people up constantly.

This guide walks through the actual calculation, step by step, with real numbers. No theory, just the mechanics of how Australian customs duty works in practice.

The basic formula

Australian import duty is calculated as a percentage of the customs value (called VoTI, or Value of the Taxable Importation). The formula is:

Duty = VoTI × Duty Rate

GST = (VoTI + Duty + Transport + Insurance) × 10%

The customs value is usually the transaction value, which is what you actually paid for the goods, converted to Australian dollars at the exchange rate on the day of export. For CIF shipments, the value already includes freight and insurance. For FOB, you add the freight and insurance costs to get the customs value.

ABF (Australian Border Force) uses the Reserve Bank of Australia exchange rates, updated daily. If you paid USD 10,000 for goods and the AUD/USD rate is 0.65, your customs value in AUD is $15,384.62.

How to find the duty rate

Every product imported into Australia is classified under a Harmonised System (HS) code, which is a 6 to 10 digit number that identifies exactly what the product is. Australia uses an 8-digit version called the AHECC (Australian Harmonised Export Commodity Classification), though for duty purposes the first 8 digits of the tariff schedule are what matters.

The duty rate depends on the HS code. Most manufactured goods attract 5% duty. Clothing and textiles are typically 5%. Many raw materials and industrial inputs are 0% (free). Some products have higher rates, particularly if there are anti-dumping measures in place.

You can look up the duty rate for any product using the Australian tariff schedule. Find the chapter that matches your product category (there are 97 chapters covering everything from live animals to works of art), then drill down to the specific heading and subheading.

If you know what you're importing but aren't sure which HS code applies, the HS code classifier can help. Describe your product in plain English and it'll suggest the most likely classification with the applicable duty rate.

Worked example 1: importing electronics from China

Let's say you're importing 500 wireless Bluetooth speakers from Shenzhen. The commercial invoice shows:

• Product: Portable Bluetooth speakers
• Quantity: 500 units
• Unit price: USD 12.00
• Total value: USD 6,000 FOB Shenzhen
• Freight to Melbourne: USD 800
• Insurance: USD 60

First, classify the product. Bluetooth speakers fall under HS 8518.22 (multiple loudspeakers mounted in a single enclosure). The general duty rate is 5%.

Convert to AUD (assuming AUD/USD rate of 0.65):

• FOB value: USD 6,000 ÷ 0.65 = AUD 9,230.77
• Freight: USD 800 ÷ 0.65 = AUD 1,230.77
• Insurance: USD 60 ÷ 0.65 = AUD 92.31
• VoTI: AUD 10,553.85

Calculate duty and GST:

• Duty: AUD 10,553.85 × 5% = AUD 527.69
• GST base: AUD 10,553.85 + AUD 527.69 = AUD 11,081.54
• GST: AUD 11,081.54 × 10% = AUD 1,108.15
• Total duty + GST: AUD 1,635.84

Per unit, that's about AUD 3.27 in government charges on top of the AUD 18.46 product cost. Not insignificant when you're pricing for retail.

Free Trade Agreement savings

Here's where it gets interesting. Australia has Free Trade Agreements with most of its major trading partners, including China (ChAFTA), Japan (JAEPA), Korea (KAFTA), the UK (A-UKFTA), ASEAN nations (AANZFTA), and about 20 others.

If your goods qualify under an FTA, the duty rate drops, often to 0%. Using the same Bluetooth speaker example, ChAFTA (China-Australia FTA) reduces the duty on HS 8518.22 from 5% to 0%.

That saves AUD 527.69 on our example shipment. Across a year of regular imports, FTA savings add up fast.

To claim FTA preferential rates, you need a Certificate of Origin (or a declaration of origin, depending on the agreement) that confirms the goods were manufactured in the FTA partner country. The rules of origin vary by agreement. Some require substantial transformation, others require a minimum percentage of local content. Your supplier needs to provide this documentation.

The landed cost calculator automatically checks FTA eligibility based on the origin country and HS code, showing you both the general rate and the preferential rate side by side.

Worked example 2: clothing from Vietnam with FTA

You're importing 1,000 cotton t-shirts from Ho Chi Minh City:

• HS code: 6109.10 (t-shirts of cotton, knitted)
• General duty rate: 5%
• AANZFTA preferential rate: 0%
• Invoice value: USD 3,500 CIF Melbourne

Since this is CIF, the freight and insurance are already included in the price.

• CIF value in AUD: USD 3,500 ÷ 0.65 = AUD 5,384.62
• Duty at general rate: AUD 269.23
• Duty at AANZFTA rate: AUD 0.00

You save AUD 269.23 by providing a Certificate of Origin under AANZFTA. The certificate costs nothing to obtain from your supplier. Vietnam is a member of ASEAN, so AANZFTA applies.

GST still applies regardless of FTA status:

• GST (with FTA): AUD 5,384.62 × 10% = AUD 538.46
• GST (without FTA): (AUD 5,384.62 + AUD 269.23) × 10% = AUD 565.39

Total savings including the GST reduction: AUD 296.16. On a single shipment that might seem small, but if you're importing monthly, that's over AUD 3,500 per year on just this one product line.

The $1,000 low-value threshold

Goods with a customs value of AUD 1,000 or less are generally exempt from import duty. This is the de minimis threshold. GST was extended to low-value imported goods in 2018, so the overseas supplier or marketplace may have already collected GST at the point of sale (this is the "Netflix tax" extended to physical goods).

A few important caveats:

The $1,000 threshold applies to the customs value of the goods, not including freight or insurance. If your goods are worth AUD 950 FOB but freight adds AUD 300, you're still under the threshold because duty is assessed on the goods value alone for threshold purposes.

Tobacco, alcohol, and goods subject to anti-dumping measures don't get the threshold exemption regardless of value.

If you're a business importing regularly, the threshold applies per consignment, not per item. A pallet of mixed goods worth AUD 800 total clears duty-free. But if you're structurally splitting shipments to stay under $1,000, ABF will notice and may treat them as a single consignment.

Anti-dumping duties

Some goods attract additional anti-dumping or countervailing duties on top of the standard rate. These are imposed when ABF determines that goods are being sold into Australia at below their normal value (dumping) or are benefiting from government subsidies in the origin country.

Common examples include steel products from several countries, aluminium extrusions from China, and certain chemical products. Anti-dumping duties can be substantial, sometimes 20% to 50% on top of the standard rate, and they change periodically based on ABF investigations.

Check the Anti-Dumping Commission notices if you're importing steel, aluminium, chemicals, or other industrial materials. Getting hit with an unexpected anti-dumping duty after clearance is an expensive surprise.

GST and the customs value

GST on imports is calculated on a broader base than duty. The GST base includes the customs value plus duty plus the cost of getting the goods to Australia (international transport and insurance). This means you're paying GST on the freight cost too, not just the goods.

If you're GST-registered (and most importing businesses are), you claim the import GST back as an input tax credit on your next BAS. So for businesses, import GST is a cash flow cost rather than a real cost. But for individuals importing for personal use, the GST is a genuine additional expense.

Working it out yourself

The quickest way to estimate your landed cost is the landed cost calculator. Enter your HS code (or search by product description), the origin country, and the goods value. It'll show you the duty rate, check for FTA preferences, calculate duty and GST, and give you a total landed cost estimate.

For HS code lookup, the tariff search lets you browse all 97 chapters of the Australian tariff schedule, and the HS classifier can suggest classifications if you're not sure where your product fits.

These tools use the current Australian tariff schedule and FTA rates. Exchange rates are pulled live from the Reserve Bank of Australia, the same source ABF uses.

Common mistakes

A few things that catch first-time importers:

Using the wrong Incoterms basis. If your invoice says FOB but you enter the CIF value into your duty calculation, you'll overstate the customs value and overpay duty. Conversely, if you declare FOB value when ABF expects the CIF value for customs purposes, you'll get a query.

Forgetting to claim FTA rates. You can't claim the preferential rate retrospectively in most cases (though there's a 12-month window to apply for a refund). Get the Certificate of Origin before the goods ship, not after they've cleared customs at the general rate.

Misclassifying goods. The difference between HS 8471.30 (laptops) and 8471.41 (desktops) might seem trivial, but it can change the duty rate and FTA eligibility. When in doubt, apply for a formal Tariff Advice from ABF. It's free and binding.

Ignoring anti-dumping duties. These don't show up in the standard tariff schedule. They're published separately by the Anti-Dumping Commission and change based on ongoing investigations. If you're importing steel, aluminium, or chemicals, always check.

The maths isn't complicated. The complexity is in getting the inputs right: the correct HS code, the right customs value, the applicable FTA rate, and any additional duties. Get those right, and the calculation is straightforward multiplication.