1. Short title This Act may be cited as the Clarifying the Small Business Runway Extension Act . 2. Clarifying amendment to the Small Business Runway Extension Act of 2018 Section 3(a)(2)(C) of the Small Business Act ( 15 U.S.C. 632(a)(2)(C) ) is amended by inserting (including the Administration when acting pursuant to subparagraph (A)) after no Federal department or agency . 3. Finalization of Small Business Runway Extension Act of 2018 rules The Administrator of the Small Business Administration shall issue a final rule implementing the Small Business Runway Extension Act of 2018 ( Public Law 115–324 ) not later than December 17, 2019. 4. Amendment to size standards for certain small business concerns (a) Size standards for small business concerns providing services Section 3(a)(2)(C)(ii)(II) of the Small Business Act ( 15 U.S.C. 632(a)(2)(C)(ii)(II) ) is amended by striking not less than . (b) Size standards for other business concerns Section 3(a)(2)(C)(ii)(III) of the Small Business Act ( 15 U.S.C. 632(a)(2)(C)(ii)(III) ) is amended by striking not less than 3 years and inserting 5 years . 5. Transition plan for the Small Business Runway Extension Act of 2018 (a) Plan required Not later than 90 days after the date of the enactment of this Act, the Administrator of the Small Business Administration shall implement a transition plan to assist business concerns and Federal agencies with compliance with the requirements of the Small Business Runway Extension Act of 2018 ( Public Law 115–324 ). (b) 3-Year calculation for size standards (1) In general The transition plan described under subsection (a) shall include a requirement that, during the period beginning on December 17, 2018, and ending on the date that is 6 months after the date on which the Administrator issues final rules implementing the Small Business Runway Extension Act of 2018 ( Public Law 115–324 ), allows the use of a 3-year calculation for a size standard to be applied to a business concern if the use of such 3-year calculation allows such