Home Irrevocable Limited Power of Attorney (Form 520) October 20, 2021 Irrevocable Limited Power of Attorney (Form 520) A one-time delivery of limited power of attorney (Form 520) is required from all sellers/servicers.Download Form 520 Download job aid Recent News November 5, 2025 Announcement SEL-2025-09: Selling Guide Updates November 3, 2025 Testing Availability for UAD Compliance Rules Severity Level Changes October 29, 2025 Fannie Mae Reports Net Income of $3.9 Billion for Third Quarter 2025