How often should I conduct performance counseling?

There used to be a specific requirement to counsel all Soldiers (E-4 and Below) monthly but that requirement was changed.  AR 600-20 para 2-3 now reads:

Commanders will ensure that all members of their command receive timely performance counseling. Effective performance counseling of officers, noncommissioned officers (NCO), enlisted Soldiers, and DA civilian employees helps to ensure that they are prepared to carry out their duties efficiently and accomplish the mission. AR 623–3 and AR 690–400 contain counseling requirements in conjunction with the evaluation reporting systems. Unit commanders will determine the timing and specific methods used to provide guidance and direction through counseling. FM 6–22 provides advice and makes suggestions concerning effective counseling. Providing regular and effective performance counseling to all Soldiers, not just those whose performance fails to meet unit standards, is a command function. All commanders will ensure that their subordinate commanders have implemented and are maintaining an effective performance counseling program.

This allows commanders to determine the timing and specifics regarding their counseling program.  Most commands have adopted a policy of conducting performance counseling for E-4 and below on a monthly basis.