Download the AccExp freeware.

NOTE: An accounts expiration date should NOT be confused with the password expiration date.

When you type accexp /?, you receive:

AccExp V01.01.00cpp Joe Richards (joe@joeware.net) August 2002                              Usage:                               AccExp user date \[/s machine\]                                 user          User ID to view/modify                                 date          Date in US format mm/dd/yy or mm/dd/yyyy                                               Value of NEVER clears the expiration                                 machine       Machine to make the change at                                Ex1:                                  AccExp test                                    View expiration date of account test on local machine                                Ex2:                                  AccExp test /s testmachine                                    View expiration date of account test on server testmachine                                Ex3:                                  AccExp test 1/30/02                                    Change expiration date of account t0 1/30/2002 for user test                                Ex4:                                  AccExp test never                                    Set test to never expire                               This software is Freeware. Use it as you wish at your own risk.                               If you have improvement ideas, bugs, or just wish to say Hi, I                               receive email 24x7 and read it in a semi-regular timeframe.                               You can usually find me at joe@joeware.net
If you wanted the value to be available in a batch script:
set Expire=Never                              for /f "Tokens=1,3" %%e in ('accexp <UserName>') do if /i "%%e" EQU "Account" set Expire=%%f