Trading stock

Trading stock is property held for resale as part of a business, rather than as a capital asset. For a property trader or developer, the properties themselves are trading stock.

Why the classification matters

It changes everything about the tax treatment:

• Profits are ordinary income, fully taxable, with no bright-line safe harbour
• Holding costs are generally deductible against trading income rather than ring-fenced
• Stock must be valued at year end, which can create a tax liability before anything is sold
• Losses are treated differently from capital losses

The dangerous part

A property can become trading stock without you intending it. Buying with a purpose of resale, developing, or being caught by the associated persons rules can all put a property in this category.

And once you are trading, subsequent acquisitions can be tainted — including ones you genuinely intend to hold long term.

Common misunderstanding

You cannot simply relabel trading stock as an investment by holding it longer. The classification is determined at acquisition by intent and conduct.

Separating trading and investing requires deliberate structure, put in place with advice, before you start. Doing it after the fact rarely works.

Related terms

Last reviewed: 1 August 2026 · General information only, not tax advice.

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