Rating

Official FIDE Rating List

7.1
On the first day of each month, the QC shall prepare a list which incorporates the rated play during the rating period into the previous list. This shall be done using the rating system formula.

7.11
The rating period (for new players, see 7.14) is the period where a certain rating list is valid.

7.12
The following data will be kept concerning each player whose rating is at least 1000 as of the current list:
FIDE title, Federation, Current Rating, ID Number, Number of games rated in the rating period, Date of Birth, Gender and the current value of K for the player.

7.13
The closing date for tournaments for a list is 3 days before the date of the list; tournaments ending before or on that day may be rated on the list.
Official FIDE events may be rated on the list even if they end on the last day before the list date.

7.14
A rating for a player new to the list shall be published only if it meets the following criteria:

7.14a
If based on results obtained under 6.3, a minimum of 5 games.

7.14b
If based on results obtained under 6.4, a minimum of 5 games played against rated opponents.

7.14c
The condition of a minimum of 5 games need not be met in one tournament. Results from other tournaments played within consecutive rating periods of not more than 26 months are pooled to obtain the initial rating.

7.14d
The rating is at least 1000.

7.14e
The rating is calculated using all his results as if they were played in one tournament (it is not published until he has played at least 5 games) by using all the rating data available.

7.2
Players who are not to be included on the list:

7.21
Players whose ratings drop below 1000 are listed on the next list as ‘delisted’. Thereafter they are treated in the same manner as any other unrated player.

7.22
Titled players who are unrated are published in a separate list concurrently with the list of rated players.

7.23
Inactive players are considered rated at their most recent published rating for purposes of rating and title results.

7.23a
A player is considered to commence inactivity if he plays no rated games in a one year period.

7.23b
A player regains his activity if he plays at least one rated game in a period and he is then listed on the next list.

 

Source: https://www.fide.com/fide/handbook.html?id=197&view=article