United States: IRS updates “public key” for FATCA filing

Existing key will be replaced on October 17, 2025

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September 30, 2025

The IRS today announced that the new IRS public key for FATCA filing will be available and replace the existing key on October 17, 2025.

After Friday, October 17, 2025, at 9:00 AM EDT, the new IRS public key will need to be downloaded from International Data Exchange Service (IDES) to file FATCA reports.

Read the IRS transmittal message (September 30, 2025)

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