The Guernsey Dairy will charge wholesalers 6% more in the early New Year.
The 6.3% increase will come into effect on 6 January 2024.
It will be charged to wholesalers, who buy milk from the Dairy and supply it to shops and homes.
It is the wholesalers decision whether to pass on the increase, but in practice this is generally what happens.
Island FM understands that once the price hikes have been introduced, Guernsey will have the most expensive milk per litre in Europe.
A litre of Guernsey milk currently costs around £1.72.
The Dairy says the price rise will help offset its increased costs, brought about by Brexit, political instability and supply chain issues.
It means milk will edge ever closer to the £2 a litre mark.
The Dairy last increased its wholesale price in March 2023.

Waiting times to see a medical specialist in Guernsey still below target
'Small' bomb mistakenly taken into Guernsey Police Station
'Useful' amount of rain expected in the Channel Islands
Four rescued from RIB 40 miles west of Guernsey
Stark warning over Guernsey's changing climate
Possible job cuts at RBSI in Guernsey and Jersey
Guernsey students beat England's A level pass rate
Guernsey community unites out west for solar eclipse