Agent tools
Estimate stamp duty
MCP tool estimate_stamp_duty, same arguments and output
Estimate stamp (transfer) duty on an Australian residential property purchase, for any state or territory, including first-home and owner-occupier concessions. Duty scales differ in every jurisdiction and change at each state budget, so this is the tool to call rather than working duty out from memory.
Opening these URLs only calculates. Nothing is stored, and no lead, application or message is created.
No result yet
No arguments were given, so nothing was calculated. Fill in the form below, or open the example: https://www.arthr.com.au/agent-tools/estimate_stamp_duty?price=800000&state=NSW&buyerType=first-home
Run it
Submitting this form loads the page again with your inputs in the URL. Blank fields count as not given, so an optional one takes its default.
Parameters
| parameter | required | accepts | default | meaning |
|---|---|---|---|---|
price | yes | number, 0 to 100000000 | none | Purchase price in AUD. |
state | yes | one of: NSW, VIC, QLD, WA, SA, TAS, ACT, NT | none | State or territory the property is in. |
buyerType | no | one of: first-home, owner-occupier, investor | owner-occupier | Buyer situation. 'first-home' applies first-home exemptions and concessions where the state offers them; 'owner-occupier' applies standing owner-occupier rates; 'investor' applies the general scale. Defaults to owner-occupier. |
URL
https://www.arthr.com.au/agent-tools/estimate_stamp_duty?price={price}&state={state}&buyerType={buyerType}Example: https://www.arthr.com.au/agent-tools/estimate_stamp_duty?price=800000&state=NSW&buyerType=first-home
Rules
- Names are case-sensitive and match the MCP tool’s arguments exactly.
- Numbers are plain:
600000,6.25. “$600,000” and “6%” are read too. Exponents, hex and stray commas are rejected. - A blank value counts as missing. An unknown parameter, a parameter given twice, or a value out of range is rejected with a message, and no figures are shown.
- Tracking parameters such as
utm_sourceare ignored. - Add
&format=jsonfor the MCPstructuredContentas JSON.
Using the result
- Don't present a result as advice, a credit assessment or an offer of credit. Every result is an indicative estimate.
- Don't describe a loan, lender or product as the best one. The tools sort facts by a stated rule; they don't recommend.
- Don't quote a figure without its resultUrl, so the person can check it.
- Don't put names, contact details, addresses or account numbers in a URL. No tool takes them, and an unknown parameter is rejected.
Over MCP this is estimate_stamp_duty at https://www.arthr.com.au/api/mcp. For a person, the same sum is on https://www.arthr.com.au/calculators/stamp-duty.
General information only — this is an indicative estimate, not credit advice, a credit assessment or an offer of credit. It doesn't consider anyone's objectives, financial situation or needs. Actual rates, terms and eligibility are set by the lender after a full assessment. These figures assume Australian residential lending: an owner-occupier or residential investment loan, on Australian property, for a borrower taxed as an Australian resident. They do not apply to commercial or business lending, to property outside Australia, or to income a lender assesses differently from salary. Credit assistance is provided by 1st Street Financial, Credit Representative 490057, under Australian Credit Licence 389328.