This interim final rule amends the U.S. Small Business Administration's regulations pertaining to the Historically Underutilized Business Zone (HUBZone Program). Specifically, this interim final rule allows a declined or decertified HUBZone small business to reapply ninety (90) calendar days after the decline or decertification decision is rendered, rather than wait one year to reapply, provided that it meets the eligibility requirements at that time of application.