Stamp Duty · Calculator

Stamp Duty on $450,000 in South Australia (2025-26)

Stamp duty on a $450,000 property in South Australia is estimated at $18,830. Including transfer and mortgage registration fees, upfront government costs are about $23,587. This page breaks down each amount and shows concession scenarios.

Stamp duty in South Australia

South Australia uses a straightforward progressive bracket system with no separate owner-occupier concession — all buyers pay the same rate. SA was the first state to fully abolish stamp duty for first home buyers of new homes: since 6 June 2024, eligible new homes, off-the-plan homes and vacant land to build get a full stamp duty exemption with no value cap.

Policy note: SA is progressively reducing stamp duty barriers. First home buyers get a full stamp duty exemption with no value cap on new homes, off-the-plan homes and vacant land to build (from 6 June 2024) — but established (previously occupied) homes get no first-home stamp duty relief and pay standard rates. The First Home Owner Grant is $15,000 for new homes with no property value cap (removed February 2025). SA has no foreign buyer stamp duty surcharge, making it relatively attractive for international purchasers.
Stamp duty $18,830.00 SA transfer duty on $450,000
Effective rate 4.18%
Total upfront $23,587.00
Transfer fee $4,553.00

Cost Breakdown

Purchase price $450,000
Stamp duty (SA) $18,830.00
Transfer registration fee $4,553.00
Mortgage registration fee $204.00
Total upfront government costs $23,587.00
Effective stamp duty rate 4.18%

First Home Buyer Concession

Standard stamp duty $18,830.00
First home buyer duty $18,830.00
FHB saving $0.00

Use our SA First Home Buyer Calculator to check eligibility and get a detailed breakdown.

Compare Nearby Prices in SA

Price Stamp Duty Effective Rate
$400,000 $16,330.00 4.08%
$450,000 $18,830.00 4.18%
$500,000 $21,330.00 4.27%

Compare $450,000 Across States

Buying in this price range

Properties under $500,000 are typically entry-level — units, apartments, or houses in regional areas and outer suburbs. At this price point, first home buyer concessions and grants have the most impact, potentially eliminating stamp duty entirely in several states. The upfront government costs at this level are a smaller proportion of the purchase price, but still represent a significant cash outlay alongside your deposit.

First Home Buyer relief is strongest here

Most states offer full stamp duty exemption or significant concessions at this price point. NSW exempts purchases under $800,000, VIC under $600,000, QLD under $700,000 (established homes; new homes and vacant land to build have no price cap), and SA (new homes, off-the-plan homes and vacant land to build, with no price cap since June 2024). Always check the specific threshold for your state — small differences in price can mean thousands in savings.

Factor stamp duty into your deposit

Even with concessions, you need cash for transfer and mortgage registration fees, conveyancing, and building inspections. Budget 2-3% of the purchase price for total upfront costs beyond the deposit. On a $400,000 property, that is $8,000-$12,000.

Typical buyers: First home buyers, downsizers, regional buyers, and apartment purchasers in capital cities.

Frequently asked questions

How much is stamp duty on a $450,000 property in SA?
Stamp duty on a $450,000 property in South Australia is $18,830. This represents an effective stamp duty rate of 4.18% of the purchase price. Including transfer and mortgage registration fees, total upfront government costs are $23,587.
What are the total upfront costs on a $450k property in SA?
For a $450,000 property in South Australia, total upfront government costs are approximately $23,587. This includes stamp duty of $18,830, a transfer registration fee of $4,553, and a mortgage registration fee of $204.
Do first home buyers get a discount on $450k in SA?
At $450,000, first home buyer concessions in South Australia do not reduce the stamp duty amount. The concession thresholds are below this price point. Standard stamp duty of $18,830 applies.
How is stamp duty calculated in SA?
South Australia uses a progressive bracket system for stamp duty. The rate increases as the property value rises, similar to income tax brackets. Only the portion of the price within each bracket is taxed at that bracket's rate. Use our interactive SA Stamp Duty Calculator for a detailed breakdown.

Need a detailed calculation?

Our interactive SA Stamp Duty Calculator lets you enter any property value and see a full breakdown of duty, fees, and concessions.

First home buyer? Check your eligibility with the SA First Home Buyer Calculator.

Related calculators

SA Stamp Duty Calculator Estimate stamp duty in South Australia NSW Stamp Duty Calculator Estimate transfer duty, fees and deposits in NSW NSW First Home Buyer FHB stamp duty exemption up to $800k VIC Stamp Duty Calculator Estimate land transfer duty in Victoria VIC First Home Buyer FHB duty exemption up to $600k QLD Stamp Duty Calculator Estimate transfer duty in Queensland
State Stamp Duty Effective Rate
NSW $14,437.00 3.21%
VIC $22,070.00 4.90%
QLD $14,175.00 3.15%
SA $18,830.00 4.18%
WA $15,390.00 3.42%
TAS $16,123.00 3.58%
NT $20,057.00 4.46%
ACT $9,700.00 2.16%