To amend the Small Business Act to modify application deadlines and communication requirements for certain disaster assistance, and for other purposes.

HR 3556 modifies deadlines and communication rules for small businesses seeking disaster relief under the Small Business Act. It extends the deadline for applications to 60 days after the original cutoff, allowing late submissions if applicants show "good cause." The bill also requires the Administrator to communicate disaster assistance details to every congressional office representing areas affected by a major disaster. These changes directly affect small business applicants in disaster zones and improve transparency for local lawmakers.