Different organizations are using slightly different rules of the game. Like throw in or kick in and ball handling rules by the goal keeper. We the Governing body for AMF/FEFUSA in the USA are an Independent Futsal Organization. But Internationally affiliated with the World Futsal Association the AMF former FIFUSA.  WE ,FEFUSA respect all other organizations practicing FUTSAL .  All our members are allowed to use their own home rules.  When it comes to sanctioned games we discuss the rules with all coaches before the games.
We would like to clarify a confusing matter. 
CONFUSING:
Contrary, to what many believes that this is a sport, invented and managed by the FIFA, the origin of Futsal can be traced back to Montevideo where  in 1930 Juan Carlos Ceriani devised a five-a–side ball kicking game with adjusted size goals for youth competition in YMCAs. The game is played on basketball-sized courts, both indoors and outdoors without the use of sidewalls. The name Futsal has been accepted internationally for many years. Not so long ago FIFA modified the game and changed many rules to improve the commercial aspect of the sport. The AMF/FIFUSA, with approximately 80 Countries (members) like our FEFUSA are part of over a 100 countries playing Futsal the way it was meant to be played using the following rules. The official name Futsal has been recognized as a generic name like soccer or baseball and is free to be used by any club or association practicing the game of Futsal ( Indoor Soccer using NO WALLS)                                                                                         

The International Federations belonging to FEFUSA/AMF , conduct National and International tournaments for male and female adults and youth, including World Cups sanctioned by the AMF/FIFUSA the first World Association for Futsal.

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