For most tax return preparers, the end of the day on October 15th marks a joyous occasion—the end of a frequently grueling tax filing season and a much-needed reprieve before the cycle begins again in January. Unfortunately, the Service cut the party short in the world of R&D tax credits with its issuance of a new memorandum. This memorandum, published by the Internal Revenue Service Office of Chief Counsel on October 15th, issued new guidance regarding what required information a taxpayer must now include in its claim for an R&D tax credit.