Hosted MCP server

Source-grounded Australian tax research.

Connect Claude or ChatGPT to a cited 53-source corpus covering legislation, proposed tax-law changes, ATO material, cases, bills, state revenue guidance, and source-gap metadata.

Connect Claude Connect ChatGPT

MCP endpoint https://mcp.taxcode.au/

Built for professional research support. Not legal or tax advice.

Install

Connect once, then query from your agent.

Use the hosted Streamable HTTP MCP endpoint with OAuth. The detailed guides cover workspace-specific settings; the core path is the same.

Connect from Claude

Open Claude and go to Customize > Connectors.
Select Add custom connector.
Name it taxcode.au and paste https://mcp.taxcode.au/.
Click Add, then Connect and complete OAuth.
Ask Claude to use taxcode.au for Australian tax research.

Team and Enterprise workspaces may need an owner to add the connector under organization connector settings first. Open the Claude setup guide.

Connect from ChatGPT

Open Settings > Apps > Advanced settings and enable Developer mode.
Go to Apps > Create app.
Enter the MCP server URL https://mcp.taxcode.au/.
Choose OAuth authentication, scan tools, authorize, and create the app.
In a chat, choose Developer Mode and select taxcode.au.

Workspace admins may need to allow custom apps or Developer mode before the create flow appears. Open the ChatGPT setup guide.

First query

Use taxcode.au to map the Division 7A repayment timing issues, cite the provisions and ATO materials, flag cases or source gaps, and list compliance risks before drawing conclusions.

Stop digging through scattered sources.

Australian tax research spans current law, proposed legislation, ATO guidance, tribunal decisions, cases, and policy material. Generic AI tools are not enough when every answer needs a source trail.

Inefficient research

Manual searches through legislation and rulings slow down client work and make it hard to test alternatives quickly.

Unverifiable AI output

General models can invent citations or miss jurisdiction-specific constraints unless retrieval is grounded in the actual corpus.

Missed opportunities

Compliance pressure leaves less room for proactive structuring, concession, election, timing, and proposed-law planning.

The corpus

More than ATO retrieval.

taxcode.au indexes ATO material, but the research surface is wider: Commonwealth law, state and territory revenue law, cases, bills, Budget material, Treasury consultations, Board of Taxation reviews, practitioner guidance, and explicit source-gap records.

53 tracked sources

52 official source families plus the researched AustLII gap.

106,975 laws

Current, historical, future-effective, guidance, and case records.

5.18M search chunks

Source text segmented for agent retrieval and exact follow-up.

45.75M resolved targets

Provision, ruling, case, and index-node targets for citation checks.

Snapshot verified against the local corpus database on 2026-07-09. Known source gaps remain visible instead of being treated as complete coverage.

How it works

One question becomes a research path.

taxcode.au gives agents a routing layer, retrieval tools, exact source text, citation targets, law-change discovery, and strategy scans. The answer should show what was checked, not just the final paragraph.

Connect your agent Add the taxcode.au server to your AI workflow.
Ask complex questions Explore strategies, exceptions, thresholds, proposed law changes, and anti-avoidance risk.
Check the sources Review answers mapped back to source text, citations, dates, and gaps.

Can a private company loan be cleaned up before year end, and what should we check before advising?

Start with Division 7A routes: loan agreement timing, minimum yearly repayments, distributable surplus, amalgamated loan rules, benchmark interest, and compliance evidence. Then pull exact source text and check current and proposed law-change material before drafting advice.

strategy_brief for the issue map
text_excerpt for exact provisions and guidance
law_change_search for Bills, Budget, and Treasury material

Tools

Built for source-grounded tax research.

The product surface is deliberately narrow: route the question, retrieve the right law, preserve context, and keep every answer auditable.

Routing guide

tool_routing_guide tells agents which tool to start with.

Corpus and index search

corpus_search and index_query_tree find source routes.

Exact source text

text_excerpt pulls reviewable text after a source is identified.

Citation graph

references_targets checks provisions, rulings, cases, and labels.

Law-change search

law_change_search covers Bills, Budget, Treasury, and reform material so accountants can prepare for upcoming legislative changes.

Strategy scans

strategy_brief and risk scans surface concessions, exclusions, and controls.

Dashboard-style preview of cited tax research results

Use cases

Ground AI research in law.

Draft strategy memos, prepare file notes, test client scenarios, and surface source-backed questions and upcoming law-change issues for senior review.

Install once. Query from your agent.

Add the MCP server to Claude or ChatGPT and keep Australian tax research grounded in source material.

Back to install