{{for|the international championship of [[Twenty20]] cricket|ICC World Twenty20}}
{{Use dmy dates|date=January 2013}}
{{Infobox cricket tournament main
| name = ICC T20 Championship
| image =ICCranking logo.png
| imagesize = 153px
| caption = ICC T20 Championship logo
| administrator = [[International Cricket Council]]
| cricket format = [[Twenty20]]
| tournament format =national (ongoing points accumulation through all matches played)
| first = 2007
| last = ongoing
| participants = 16
| champions = {{cr|SL}} (129 points)
| most successful = {{cr|SRI}} (19 months)
}}

The '''ICC T20 Championship''' is an international [[Twenty20]] [[cricket]] competition run by the [[International Cricket Council]]. The competition is notional in that it is simply a ranking scheme overlaid on the regular T20I match schedule.<ref>{{cite web|url=http://www.espncricinfo.com/ci-icc/content/current/story/537775.html|title=Twenty20 rankings launched with England on top|accessdate=24 October 2011}}</ref> After every T20I match, the two teams involved receive points based on a mathematical formula. The total of each team's points total is divided by the total number of matches to give a rating, and all teams are ranked on a table in order of rating.<ref>{{cite web|url=http://icc-cricket.com/newsdetails.php?newsId=17485_1319103480|title=David Richardson previews the release of the Reliance ICC T20I Rankings|accessdate=24 October 2011}}</ref>

As of 21 June 2013, Sri Lanka lead the ICC T20I Championship with a rating of 132.

==Qualification==
{{Empty section|date=February 2012}}

== Points ==
The calculations for the Table are performed as follows:
* Each team scores points based on the results of their matches.
* Each team's ''rating'' is equal to its total points scored divided by the total matches played. (Series are not significant in these calculations).
* A match only counts if played in the last three years.
* Matches played in the first year of the three-year limit count one-third; matches played in the second year count two-thirds; matches played in the last year count fully; essentially, recent matches are given higher weighting.
* To determine a team's rating after a particular match:
** Determine the match result (win, loss, or tie)
** Calculate the match points scored:
*** If the gap between the ratings of the two teams at the commencement of the match is fewer than 40 points, then:
**** The winner scores 50 points more than the opponent's rating
**** The loser scores 50 points fewer than the opponent's rating
**** Each team in a tie scores the opponent's rating
***If the gap between the ratings of the two teams at the commencement of the match is more than or equal to 40 points, then :
**** The winner, if it is the stronger team, scores 10 points more than its own rating
**** The winner, if it is the weaker team, scores 90 points more than its own rating
**** The loser, if it is the stronger team, scores 90 points fewer than its own rating
**** The loser, if it is the weaker team, scores 10 points fewer than its own rating
**** The stronger team in a tie scores 40 points fewer than its own rating
**** The weaker team in a tie scores 40 points more than its own rating
** Add the match points scored to the points already scored (in previous matches as reflected by the table) and determine the new rating. However, matches (and the points) which do not lie in last three year range will have to be removed.

* Points earned by teams depend on the opponents ratings, therefore this system needed to assign base ratings to teams when it started.

== Ranking table ==
{{ICC T20I Championship rankings}}

=== Historical ICC T20I Champions ===

{| class="wikitable"
|- style="background:#efefef;"
! Country
! Start
! End
! Total Months
! Highest Rating
|-
| {{cr|ENG}} || October 2011 || March 2012 || 6 || 140
|-
| {{cr|RSA}} || March 2012 || September 2012 || 7 || 130
|-
| {{cr|SRI}} || September 2012 || || 19 || 134

|}

== See also ==
{{Portal|Cricket}}
*[[ICC Test Championship]]
*[[ICC ODI Championship]]
*[[International structure of cricket]]
*[[ICC Player Rankings]]

==References==
{{reflist}}

==External links==
*[http://www.icc-cricket.com/match_zone/team_ranking.php ICC Test, ODI and T20I Championship Rankings]

{{International cricket}}

[[Category:International Cricket Council awards and rankings|T20I Championship]]
[[Category:Twenty20 International cricket competitions]]