The U.S. IRS has updated its FAQs to assist taxpayers in filing valid Section 41 research credit claims for refund, considering the new information requirements introduced in October 2021. This includes an update concerning the transition period for perfecting a research credit claim. When the information requirements were introduced, a grace period until 10 January 2022 was provided before requiring the inclusion of this information with timely filed research credit claims. After the expira…