HR 4933 - Research and Development Tax Credit Expansion Act of 2025 HR 4933 from the 119th Congress: Research and Development Tax Credit Expansion Act of 2025 Please wait while we fetch the latest information... HR 4933 - Research and Development Tax Credit Expansion Act of 2025 Share: Copied! Analyses Discussion Discussion Please enable JavaScript to view the comments powered by Disqus. Text Actions Related Bills Sponsors Bill Text Actions Related Bills Sponsors