H.R. 5271 would lower the dollar threshold that triggers requirements for defense contractors to submit certified cost and pricing data to the federal government. Currently, contractors must provide this detailed financial information for contracts exceeding $2 million, but the bill would reduce that threshold to $750,000. This change would apply to all new defense contracts signed after the bill becomes law, while existing contracts above $750,000 would need to be modified to comply with the new rules as soon as practicable. The bill affects defense contractors and the Department of Defense, as it increases transparency and oversight of contract costs for a broader range of military procurement activities. The legislation contains no specific funding allocations or implementation timelines beyond requiring prompt modification of existing contracts.