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Federal Retirement Thrift Investment Board

The Federal Retirement Thrift Investment Board administers the Thrift Savings Plan, a tax-deferred retirement account similar to a 401(k).

Contact the Agency or Department

Website: Federal Retirement Thrift Investment Board

Address: Thrift Savings Plan
PO Box 385021

Birmingham, AL 35238

Phone Number: (404) 233-4400 (for international callers who cannot call toll free)

Toll-free: (877) 968-3778

TTY: (877) 847-4385