Commercial Property Stamp Duty Calculator

No, and this trips up a lot of buyers. Commercial and residential stamp duty use different rules — residential buyers get access to first-home buyer concessions, primary residence exemptions and various discounts that simply don't exist on the commercial side. What you get instead is actually simpler: there's no complicated means-testing or eligibility criteria to navigate. You pay the rate for your state, full stop. The trade-off is that commercial rates are often higher than residential at the same price point, which is exactly why using this calculator before you make an offer matters.

Not directly, no. Stamp duty has to be paid in cash at settlement — it goes straight to the state revenue office and isn't part of the purchase price your lender funds. This is one of the things that catches first-time commercial buyers off guard. On a $600,000 purchase you could be looking at $20,000–$35,000 in stamp duty that needs to be liquid and available on settlement day, on top of your deposit. What I do sometimes see is buyers using equity in an existing property to cover the stamp duty — essentially borrowing against something they already own. It's worth a conversation about your full picture before you commit to a purchase price. Book a call with our team and we'll run through the numbers with you.

The short answer is yes, but not in the way most people expect. You don't get to claim it all in the year you pay it. For investment properties, the ATO generally treats stamp duty as a capital cost — either deducted over five years under the blackhole expenditure provisions, or added to your cost base and factored into any capital gain when you eventually sell. For owner-occupiers using the property in their business, there's a slightly different treatment again. It's one of those areas where your accountant's advice is genuinely worth getting before you buy, not after — the right structure from day one makes a real difference to your tax outcome over the life of the property.

Yes — your SMSF pays stamp duty just like any other buyer. There's no super-specific exemption here. The fund is the purchasing entity so the duty applies at the standard commercial rate for your state. That said, the reason so many people buy commercial property through their SMSF isn't to avoid stamp duty — it's everything that happens inside the fund after settlement: concessional tax on rental income, potential capital gains exemption once the fund moves into pension phase, and the ability to lease the property back to your own business. The stamp duty is a one-off cost; the tax advantages run for decades. If you want to understand how SMSF commercial property finance actually works, our SMSF guide walks through the full picture.

South Australia wins this one convincingly — most commercial properties classified as qualifying land (that's offices, retail and industrial) have paid zero stamp duty in SA since July 2018. It's a genuine advantage and I've seen it shift decisions for investors who were tossing up between states. For everywhere else, Queensland tends to come out ahead of NSW and Victoria at most commercial price points, but the gap narrows as the purchase price goes up. Run your figures through the state-by-state comparison in the calculator above — it'll show you the exact dollar difference for your purchase price, which is often more persuasive than any general rule of thumb.