Capital Gains Tax: The 6-Year Rule Explained

March 30, 2026

Real estate investment

When it comes to owning investment property in Australia, Capital Gains Tax (CGT) is a reality most of us would rather avoid. However, there's a valuable relief known as the "6-Year Rule" that many property owners aren’t utilising effectively—or not fully aware of its implications.

What Is the 6-Year Rule?

The 6-Year Rule allows you to treat your investment property as if it were your main residence for CGT purposes—meaning you can rent it out and still claim it as your primary home (and therefore CGT-exempt) for up to six years. But here's the catch: you can only claim this exemption if you don’t treat another property as your main residence during this time.

Why Six Years?

This period wasn’t picked randomly. Six years is considered a fair window for Australians moving interstate or temporarily renting out their homes without losing CGT relief. If you decide not to sell the property after six years, you may need to pay CGT on the profits from that point onwards—but only for the additional years.

Common Misconceptions

Using Calculators to Simplify Your Tax Strategy

Maximising CGT relief doesn’t need to involve a spreadsheet. Check out our CGT Calculator to see how the rule might work in your favour. Crunched your borrowing power? If you're planning to buy again, ensure you use our Borrowing Capacity Calculator to know your limit.

If you're offsetting rental income from this property, understanding Negative Gearing plays a role in the bigger financial picture.

Should You Sell Before Time Runs Out?

Before selling, assess your equity growth, future plans, and current tax obligations. Selling to "reset" the 6-year rule's clock might not always be the most strategic decision.

Final Thoughts

While CGT can sting, thoughtful planning and knowing the 6-Year Rule inside-out might save you thousands. Never hesitate to consult tax professionals for tailored advice, especially for complex cases.

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