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                                                                      EXHIBIT 11
                            IDX SYSTEMS CORPORATION
                     SCHEDULES OF NET INCOME PER SHARE AND
                         PRO FORMA NET INCOME PER SHARE
                   (IN THOUSANDS, EXCEPT FOR PER SHARE DATA)

                                      

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<CAPTION>
                                                  PRIMARY            FULLY DILUTED 
                                              THREE MONTHS ENDED  THREE MONTHS ENDED
                                                SEPTEMBER 30,        SEPTEMBER 30,
                                               1996      1995     1996        1995
                                             --------  --------  -------    --------
<S>                                          <C>       <C>       <C>      <C>
 
Weighted average shares                        20,890    14,997   20,890      14,997
  outstanding                                                                 
                                                                              
Net dilutive effect of stock options-                                         
  based on the treasury stock method                                          
  using the IPO price until the effective                                     
  date and average price thereafter for                                       
  primary and ending price, if higher,                                        
  for fully diluted                               570       927      570         927
                                                                              
Effect of final S corporation                                                 
  distribution                                            1,789                1,789      
                                                                              
Effect of common and common                                                   
  stock equivalent shares issued by                                           
  the Company during the twelve                                               
  month period immediately                                                    
  preceding the Company's initial                                             
  public offering in November 1995,                                           
  as if they were outstanding for all                                         
  periods presented prior to the initial                                      
  public offering, using the treasury                                         
  stock method, as described above                          192                  192
                                              -------   -------  -------      ------
                                                                              
Total shares                                   21,460    17,905   21,460      17,905
                                              =======   =======  =======      ======
                                                                              
Net income                                    $ 3,429            $ 3,429      
                                              =======            =======      
                                                                              
Net income per share                          $  0.16              $0.16      
                                              =======            =======      
                                                                              
Pro forma net income                                    $ 2,116              $ 2,116      
                                                        =======              =======      
                                                                                          
Pro forma net income per share                          $  0.12                $0.12      
                                                        =======              =======      
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