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Q-F05. What is the Federal share under IIJA?

AIG  Allocated: The Federal share is the same as for AIP grants, ranging from 50% to 95%, as outlined in 49 U.S.C. §47109 (for further explanation of the statutory provision, see Section 4-9 of FAA Order 5100.38D, Change 1 (AIP Handbook)). This includes grants using unobligated AIG funds for projects not related to FCTs. See Q-F3.

The 2024 FAA Reauthorization Act provided a time limited change to the Federal share for nonhub or nonprimary airports. For FYs 2025 and 2026, the Federal share for AIG grants to these airports has increased from 90% to 95%.

FCT: The Federal share for FCT improvements is 100%. This includes grants using unobligated AIG funds for FCT projects. See Q-F3. 

AFR: The Federal share for AFR projects is the same as those for AIG grants. 

ATP: The Federal share for terminal and sponsor-owned ATCT improvements is 80% for large and medium hub airports and 95% for small hub, nonhub, and nonprimary airports.