Research, page-3982

Never knew the term for it until now. Cheers

Here is some more information on it in case anyone interested.

3. 'Wash sales'
Investors must be careful not to undertake "wash sale" arrangements under which they bring forward a capital loss by selling a listed security and then immediately repurchasing the same, or substantially the same, asset. Under this arrangement there is effectively no change in the economic exposure of the owner to the asset.
The Australian Taxation Office (ATO) seeks to apply tax-avoidance rules to "wash sale" arrangements and will deny the capital loss (or trading loss) to the investor. There are only limited circumstances in which such arrangements will be acceptable. For example, it may be possible for an investor to dispose of shares in one company and purchase shares in a competitor company that carries on a similar business, without attracting the ire of the ATO.