Montgomery GI Bill Enhancement Act of 2003

Montgomery GI Bill Enhancement Act of 2003 - Authorizes an individual, during the year following enactment of this Act, to make an irrevocable election for entitlement to basic educational assistance under the Montgomery GI Bill if such individual: (1) first became a member of the armed forces or entered active duty before July 1, 1985; (2) has served on active duty without a break in service and continues to serve for some or all of the year before enactment of this Act; (3) has completed requirements of a secondary school diploma or the equivalent of 12 semester hours in a program leading to a standard college degree; and (4) is discharged or released from active duty honorably.

Requires such individual's basic pay to be reduced, over an 18-month period, until the total reduction is $2,700, as a contribution toward such educational assistance.