Assumptions stated up front
Every scenario opens with the numbers and conditions it depends on: purchase price, deposit, interest rate, vacancy allowance and holding period, so you can see exactly what is being assumed before you read the outcome.
Property investing guide
The Autistic Investor: A Clear-Headed Australian Guide to Property
A structured Australian property investing guide that states its assumptions up front, works through real numbers step by step, and gives you a due diligence checklist rather than a story about what worked for someone else.
- 2026 edition
- AU Australian context
- Digital guide
- AUD $19 on Gumroad
- General information only
Last reviewed: 19 September 2026. General information only, not financial advice.
What this gives you
Property investing explained for readers who want the reasoning shown.
The guide is written for people who want assumptions stated plainly, numbers worked through in full, and a checklist to follow rather than persuasion. It is a companion to Your First Investments and Your First Home.
Worked examples with real numbers
Cashflow, gearing and tax outcomes are worked line by line rather than summarised, including the current tax regime and the enacted 2026 changes shown side by side.
Due diligence without the guesswork
A structured due diligence checklist and a state-by-state reference for stamp duty, land tax and tenancy rules at a summary level, so you know what to check and where to check it.
Inside the guide
Built to be read once, then used as a reference.
It is designed to be read front to back first, then used as a reference when checking a property, comparing scenarios or verifying an assumption before a decision.
Updated September 2026 for the enacted negative gearing and capital gains tax changes under the Treasury Laws Amendment (Tax Reform No. 1) Act 2026, which passed Parliament on 25 June 2026. Negative gearing is limited to new builds from 1 July 2027, and the 50% capital gains tax discount is replaced by indexation plus a 30% minimum tax. Every worked example in this guide shows both the current regime and the new regime side by side.
Assumptions and numbers first
Every worked example states its purchase price, deposit, rate, costs and holding period before showing the outcome.
How the tax changes work
The current regime and the new regime shown side by side in every example, so the effect of the change is visible rather than described.
Due diligence checklist
A structured checklist to work through before making an offer, covering the questions that are easy to skip under time pressure.
State-by-state reference
A summary-level reference for stamp duty, land tax and tenancy rules by state, to know what to check before relying on it.
Product Q&A
Questions before you buy
Quick answers before you open the Gumroad checkout page.
- Is this financial advice?
- No. The Autistic Investor provides general information and education only. It is not personal financial advice, financial product advice, tax advice, legal advice, credit advice or a recommendation.
- Who is it for?
- Autistic and other structured thinkers who want explicit assumptions stated up front, and anyone who prefers worked numbers over persuasion. It is not written only for autistic readers.
- Does it cover the 2026 tax changes?
- Yes. Every worked example shows both the current regime and the enacted 2026 regime side by side, as described above.
- Does it tell me what or where to buy?
- No. It does not recommend a specific property, suburb, lender or strategy. It explains the assumptions, the numbers and the checklist so you can work through your own decision.
- How do I get the guide?
- Use the Gumroad checkout link on this page. After purchase, Gumroad handles payment and digital file delivery.
Gumroad checkout
Read before the numbers get worked through for real.
The Autistic Investor is built to make property assumptions explicit before money moves: what is being assumed, what the numbers show under both tax regimes, and what to check before an offer.
AUD $19