TD 9539 contains final regulations that amend the regulations concerning the election to claim the reduced research credit.  The final regulations simplify how taxpayers make the election and affect taxpayers that claim the reduced research credit.These final regulations simplify the section 280C(c)(3) election to have the provisions of section 280C(c)(1) and (c)(2) not apply by requiring the election to be made on Form 6765, “Credit for Increasing Research Activities.”  The form must be filed with an original return for the taxable year filed on or before the due date (including extensions) for filing the income tax return for such year.  An election, once made for any taxable year, is irrevocable for that taxable year.