This bill, titled the NFIP Premium Transparency Act, aims to significantly increase transparency within the National Flood Insurance Program (NFIP) by requiring the Federal Emergency Management Agency (FEMA) to provide more detailed information to policyholders and the public. It amends the National Flood Insurance Act of 1968 to mandate that flood insurance policy declaration pages, within 12 months, include a comprehensive breakdown of the current insurance premium , detailing all applied discounts , the estimated years remaining until full-risk premium, and available mitigation options with associated savings. These pages must also display the replacement cost value , all rating factors , and any special property categories, such as repetitive loss status. Additionally, the legislation requires FEMA to develop an accessible online flood insurance information tool within 36 months. This tool will provide property owners and, where appropriate, the public with extensive data, including the current premium, the full risk premium rate , replacement cost, and a detailed flood history with past claims. A key feature of this tool is its ability to allow users to adjust variables to evaluate how different mitigation activities would reduce flood risk and potentially decrease premiums. Furthermore, FEMA must annually publish online aggregated data, including median, mean, and quartile distributions of chargeable and full-risk premium rates for each state, county, and ZIP Code. Finally, it mandates a Comptroller General report to analyze potential future enhancements to the flood insurance information tool, such as adding information on property acquisition programs, nature-based solutions, and exploring access for prospective property buyers.