Fonterra will update its farmgate milk price and reveal earnings per share forecasts for 2016/17 on Monday.
The moves will give farmers guidance on the co-operative's total payout for the year and offer an assessment of the status of global dairy markets.
In May, the co-op's opening farmgate milk price for the 2016/17 year was $4.25 per kg of milk solids, up 35c from the previous season's.
Since then, GlobalDairyTrade prices for wholemilk powder have dropped by US$126 a tonne to US$2079 but futures market pricing in recent days has indicated a rise. Wholemilk power prices need to return to US$3000 a tonne to put farmers back in black.
Private forecasts vary widely.