How the Stamp Duty Savings Maximiser Works
How it works
The Savings Maximiser runs your property value through every possible combination of property type (existing home, new home, vacant land, off-the-plan), buyer intent (owner-occupier or investor), and optionally all 8 Australian states and territories. For each combination, it calculates the stamp duty using the same engine as our main calculator — including FHB concessions, foreign surcharges, and state-specific rate schedules.
The results are ranked from cheapest to most expensive, giving you a clear picture of where the biggest savings lie. When first home buyer concessions are enabled, the differences can be dramatic — in some states, the gap between the cheapest and most expensive scenario exceeds $40,000 for the same property value.
This tool is designed for the planning stage of a property purchase. By understanding which property types and buyer intents minimise your stamp duty, you can make more informed decisions about what kind of property to target and how to structure the purchase.
When to use this calculator
- You're in the early stages of planning a property purchase and want to understand your options
- You want to see how much FHB concessions save across different property types in your state
- You're flexible on property type (e.g. open to buying land and building vs an existing home)
- You're comparing interstate moves and want to see the stamp duty implications
- You want to quickly compare owner-occupier vs investor stamp duty across all property types
- You're a foreign buyer and want to see the surcharge impact across different scenarios
- You want a side-by-side ranking rather than calculating each scenario individually
Key concepts
- Scenario
- A unique combination of state, property type, and buyer intent. For a single state, the calculator evaluates 8 scenarios (4 property types x 2 intents). When searching all states, it evaluates 64 scenarios (8 states x 4 property types x 2 intents). Each scenario produces a stamp duty amount based on the published rate schedules and applicable concessions.
- Effective Rate
- The total stamp duty expressed as a percentage of the property value. This makes it easy to compare scenarios at a glance — a $20,000 duty on a $500,000 property is a 4.00% effective rate. The effective rate varies significantly by state, property type, and buyer profile, ranging from 0% (full FHB exemption) to over 12% (foreign buyer in a high-rate state).
- Owner-Occupier vs Investor Rates
- Several states offer lower stamp duty rate schedules for buyers who will live in the property. Victoria has principal place of residence (PPR) rates for properties under $550,000, Queensland has home concession rates, and the ACT has a separate owner-occupier schedule. Investors pay the standard or premium rate schedule. This difference alone can save thousands of dollars.
- FHB Concession Interaction
- First home buyer concessions interact with property type in complex ways. In NSW, the FHB exemption threshold is $800,000 for homes but $350,000 for vacant land. In Queensland, FHB concessions on new homes have no value cap, while existing homes are limited. In SA, new homes get full relief but existing homes get a reduced concession. The maximiser captures all of these interactions automatically.
- Foreign Buyer Surcharge
- Six states charge an additional surcharge of 7–9% on top of standard stamp duty for foreign buyers. This surcharge is calculated on the full property value and is not reduced by FHB or other concessions. The surcharge applies equally regardless of property type, so it does not change the relative ranking — but it significantly increases the absolute amounts.
Worked example — $650,000 property, first home buyer in NSW
Emily is a first home buyer looking at properties around $650,000 in NSW. She runs the Savings Maximiser to compare her options.
Top scenarios ranked by stamp duty (NSW, $650,000, FHB):
| # | Property Type | Intent | Stamp Duty | Eff. Rate | vs Best |
|---|---|---|---|---|---|
| 1 | Existing home | Owner-occupier | $0 | 0.00% | Best |
| 2 | New home | Owner-occupier | $0 | 0.00% | $0 |
| 3 | Off-the-plan | Owner-occupier | $0 | 0.00% | $0 |
| 4 | Vacant land | Owner-occupier | $24,457 | 3.76% | +$24,457 |
| 5 | Existing home | Investor | $24,457 | 3.76% | +$24,457 |
Key findings for Emily:
- As a first home buyer purchasing a home under $800,000 in NSW, Emily gets a full stamp duty exemption — $0 duty on existing homes, new homes, and off-the-plan. This applies regardless of whether the property is existing or new.
- If Emily buys vacant land at $650,000, she pays $24,457 because the FHB vacant land exemption threshold in NSW is only $350,000 (with concessions phasing out at $450,000).
- If Emily purchases as an investor instead of owner-occupier, she loses FHB concession access entirely and pays the standard rate.
This comparison shows Emily that her best option is any home (existing, new, or off-the-plan) purchased as an owner-occupier — all at $0 duty. Buying vacant land at this price point would cost her significantly more in stamp duty.
Frequently Asked Questions
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