Proving your property is grandfathered may be the most valuable piece of filing you do this year. Treasury says residential property held, or under a binding contract, before 7:30pm AEST on 12 May 2026 is exempt from the planned negative-gearing changes. The new framework is intended to apply from 1 July 2027. That leaves one practical question: can you prove which side of the line you were on?

For most investors, the answer should be easy. Then life happens. A solicitor retires. Emails move. A property is refinanced twice. A parent dies. Ten years later, a tax return preparer is looking for evidence that used to sit in an old inbox. Do the filing now.

What “binding contract before Budget night” means

The published policy uses a sharp test: property held before the announcement, or under a binding contract before 7:30pm AEST on 12 May 2026. Settlement is not the only event that matters. A contract exchanged before the cutoff can matter even if settlement is later.

But a signed document is not automatically a binding contract. Conditions, execution, exchange mechanics, cooling-off rights, special conditions and the law of the relevant state can matter. A deposit paid before the cutoff is useful evidence, but it does not replace the contract. A loan approval is useful evidence, but it does not create a purchase contract.

Do not try to solve a hard exchange question from memory. Ask your conveyancer or solicitor for a dated note that confirms when the contract became binding and preserve the reply with the contract. This is a records article, not a reason to take shortcuts with legal advice.

Your grandfathering evidence checklist

Create one PDF bundle and one cloud folder for every qualifying property. Give both a plain-English file name. Include the following.

  • Executed contract of sale. Keep every signed page, annexure and the version showing the contract date and, where available, time of exchange.
  • Exchange or solicitor correspondence. Save the email or letter confirming exchange, whether any condition remained and the exact time if it was recorded.
  • Deposit receipt and trust-account record. This supports the timeline. It does not prove the legal test by itself.
  • Settlement statement. It ties the contract to the property that eventually settled and shows the completion trail.
  • Title and ownership record. Store the title search, transfer and the names or entity that acquired the land.
  • Loan approval and loan documents. These are supporting context, especially where the contract and settlement are separated by months.
  • Identity of the purchaser. Keep the trust deed, company documents or SMSF trustee records if the buyer was not you personally.
  • A one-page property status note. State address, contract date, exchange time, purchaser, settlement date and file locations. Date the note.

Save originals, not just screenshots. A downloadable contract and the original solicitor email carry more weight than a cropped image sent through a group chat.

Off-the-plan purchases and staged settlements need a clearer file

Off-the-plan buyers should preserve the original land or sale contract, not just the later settlement correspondence. The elapsed time can be long. If the contract was binding before the cutoff, the evidence must show that clearly despite construction, registration or settlement happening later.

For a staged development, keep a separate proof file for each lot or contract. A master development agreement may explain the project, but it may not establish the acquisition date of every individual interest. If a nomination, rescission, replacement contract or assignment occurs, put the full chain in the file and seek advice on the status of the replacement interest.

Do not assume the occupancy certificate decides the grandfathering question. That document can be important to the separate proposed definition of a new dwelling. It is not the same document as your proof of a pre-Budget binding contract.

Refinancing, restructuring and later transfers

A refinance does not ordinarily rewrite the historic purchase contract. Still, lenders sometimes require a change in borrowers, security or title arrangements. Keep the refinance documents alongside the original proof file so the relationship is clear.

A restructure is different. Moving a property into a trust, company or another family member can have legal, duty and capital gains tax consequences. It may also test whether the entity that owns the property after the move is the entity that held it at the relevant time. Do not assume a tax result follows a property merely because the address is unchanged.

The same warning applies to separation, death and changes in beneficial ownership. Treasury's August consultation proposes continuity in certain transfers caused by death or relationship breakdown, but it is still draft law. Preserve the original evidence and the later transfer evidence. You want a clean chain, not a pile of documents.

Make the proof file part of annual property admin

Put a diary reminder in June. Check that your folder contains the original contract, current title, latest loan statement, insurance, rental records and any structural documents. Update the one-page status note after a refinance, a title change or an estate event.

There is a useful discipline here. You are not filing documents for a theoretical ATO dispute. You are making future decisions faster. A good proof file helps with an accountant change, a sale decision, estate administration and a lender review as well.

My opinion: no investor should call a property “grandfathered” until the proof is stored somewhere another person can locate without asking them to remember a decade-old email.

Who should have access to the file?

You should have it. Your spouse or a trusted executor should know where it is. Your accountant and solicitor do not need permanent access, but they should be able to receive the complete file quickly if a return, estate matter or transaction calls for it. Password-protect sensitive material and keep a separate note explaining how access works.

Paper originals can stay in a secure place, but scan them as well. Test the folder once a year by opening the contract and the status note from another device. If it takes twenty minutes to find the exchange email while everything is calm, it will take much longer during a sale, separation or estate administration.

Frequently asked questions about proving grandfathered property status

What is the exact grandfathering cutoff?

Treasury states 7:30pm AEST on 12 May 2026. The property must have been held, or under a binding contract, before that point.

Does settlement need to have occurred before the cutoff?

Not necessarily. The published policy also refers to property under a binding contract before the cutoff. The contract status and timing must be supported by documents.

Is a deposit receipt enough?

No. It supports the story but does not replace the executed contract and exchange evidence.

What if I bought off the plan?

Keep the original contract and all later registration, nomination, assignment and settlement material. Get advice if the contract changed.

Will refinancing destroy grandfathering?

A refinance does not ordinarily alter the original purchase date, but a title or ownership change can raise separate issues. Preserve all records and seek advice before restructuring.

When do the new rules start?

Treasury says the planned negative-gearing change starts from 1 July 2027, subject to the final legislative process.

Apply for a Strategy Session

Sources and references:

Make the next decision with the full picture

A property decision is rarely just a property decision. Bring the structure, records and future tax position into the same conversation.

Apply for a Strategy Session