Australia’s next property tax headache won’t necessarily be calculating capital gains tax. It’ll be proving what happened decades ago.
Imagine it’s 2042.
You’ve finally decided to sell an investment property you bought in 2004.
Congratulations. You’ve survived interest rate rises, tenants, renovations, insurance premiums, council rates and approximately 700 emails from your property manager.
Now comes the easy part.
Capital gains tax.
Just kidding.
Your accountant needs to establish what you originally paid, what you spent on improvements, what depreciation you’ve claimed, which expenses affected your cost base, what happened when the property was refinanced, and whether any historical losses remain available.
Oh, and remember that bathroom renovation in 2029?
The one where the builder went out of business?
Your accountant would love those invoices.
The tax calculation is only as good as the records behind it
Much of this historical record-keeping already exists under Australia’s current CGT system. The ATO’s guidance on keeping property records explains the information investors need to retain.
Changes to capital gains tax and negative gearing make preserving that history even more important.
As the rules change, investors need to know which historical records, valuations and loss balances remain relevant to their circumstances.
Crucially, a new set of rules doesn’t mean you can throw away the evidence collected under the old ones.
An investor may need records spanning different tax arrangements, alongside the information needed to establish the original property costs.
For years.
Potentially decades.
And if those records aren’t maintained progressively, somebody will eventually have to reconstruct them.
Usually an accountant.
Who, understandably, won’t be doing it for free.
Two owners. One property. Two completely different tax outcomes.
Here’s where it becomes particularly interesting.
Imagine a couple jointly owns an investment property, 50/50.
They bought it together, rented it together and eventually sold it together.
Same purchase price. Same renovations. Same selling price.
Surely the tax outcome is the same?
Not necessarily.
Each owner’s income, available capital losses and other individual tax circumstances can affect the tax they ultimately pay on their share of the gain.
The accountant may need to establish not only the history of the property but also the relevant tax history of each owner.
And if they’ve changed accountants four times?
Good luck.
The accountant isn’t simply reconstructing the history of the property.
They’re potentially reconstructing the tax history of two different people.
It’s not just a problem when you sell
For investors with multiple properties, accurate historical records can also influence decisions long before a sale.
Which property should you sell first?
What would the capital gains tax consequences be?
Are there carried-forward losses that may be available?
Would selling in a different financial year change the outcome?
Without reliable historical information, answering those questions becomes considerably more difficult.
And that’s where the problem moves beyond compliance.
Poor records can affect the financial decisions investors make.
The hidden cost of tax reform
CPA Australia recently estimated that Australians spend around $60 billion annually complying with the tax system. I explore that wider burden in Australia’s $60 billion tax on doing your tax.
But that figure describes today’s burden.
What about the obligations we’re creating for tomorrow?
What will it cost a taxpayer in 2042 to reconstruct records from 2026?
What happens when the original accountant has retired, the software provider no longer exists or the documents were stored in an email account that was closed 15 years earlier?
And what happens when an otherwise legitimate tax benefit can no longer be substantiated?
The consequences may go well beyond an accountant’s invoice.
A taxpayer could end up paying more tax simply because they can no longer establish the historical information needed to support their position.
The ATO has a long memory. Your filing cabinet may not.
The ATO has increasingly sophisticated technology for collecting, matching and analysing information.
Yet taxpayers are often responsible for retaining the historical evidence needed to establish their own tax position.
That creates an uncomfortable imbalance.
One side has increasingly powerful data systems.
The other is trying to remember whether the kitchen renovation was in 2028 or 2029.
It’s the same imbalance I explore in The ATO got smarter. You got more paperwork. Better technology should make the taxpayer’s job easier too.
This isn’t an argument against paying tax.
It’s an argument for making compliance requirements practical, proportionate and sustainable.
Your future accountant shouldn’t need a time machine
The problem with tax records is that by the time you realise something is missing, it can be far too late to recover it.
That’s one of the reasons we created TaxTank.
Rather than treating tax as something that happens once a year, TaxTank helps investors maintain their property income, expenses, loans, depreciation, capital costs and supporting documentation as they go.
And with CGT calculations built into the platform, investors can keep track of their position long before they decide to sell.
Because a property might be sold in 2042, but the information needed to calculate the tax could date back decades.
The smarter approach is to maintain that history while it’s happening, not attempt to recreate it when the ATO comes knocking.
And if the ATO does ask for that bathroom renovation invoice from 2029?
Wouldn’t it be nice to actually know where it is?
