Fifa will hold an extraordinary congress to elect its new president on 26 February 2016.
Sepp Blatter was re-elected as president on 29 May but four days later announced his intention to stand down amid two investigations into corruption at football’s world governing body.
Candidates for the position must be nominated before 26 October.
Uefa president Michel Platini has been asked by a majority of world football chiefs to stand for the presidency.
A Fifa news conference is planned for 14:00 BST.
Initial predictions were of a December election, as favoured by several regional football confederations.
By the time of the vote, Blatter will have been in office for close to nine months from the date of his 2 June resignation speech.
He is not expected to backtrack on his announcement to stand aside, despite appearing to suggest in June he was reconsidering his decision.
Earlier on Monday, Prince Ali bin al-Hussein – who lost to Blatter in the May election – called for the 79-year-old Swiss to leave his post immediately.
“President Blatter’s resignation cannot be dragged out any longer. He must leave now,” he said.
“An interim independent leadership must be appointed to administer the process of the elections, in addition to the reforms that are being discussed prior to the elections.”
source: bbc
