Is FIRB approval required to purchase an Australian farm?

Australia has a vast amount of land and whilst not all is suitable for farming has become attractive to foreign investors particularly with the need for increased production with global population growth. 
Agriculture business

Proposed direct interests in an agribusiness generally require Foreign Investment Review Board Approval (FIRB) where the value of the investment is more than $55 million.

However, where the purchaser is from a country where Australia holds a Free Trade Agreement (FTA) there is no limit. Current FTA countries include New Zealand, Canada, Chilie, Korea, Japan, Thailand, Malaysia, Singapore and the US.

Agricultural businesses include forestry and fishing as well as processing for meat, poultry, seafood, dairy, fruits and vegetables, grains and sugar.

Agricultural land

This is land that can be used for a primary production business.

All proposed investments in agricultural land by foreigners must be notified to the Australian Taxation Office Register of Foreign Ownership. Approval is required where the cumulative value exceeds $15 million, again except FTA partners.

For further guidance go to the government websites Agricultural land investment and Agribusiness Investments.