You can fax or mail correspondence and forms to the TSP. Make sure you choose the right TSP mailing address for your forms or correspondence. Otherwise, the processing of your request may be delayed.

TSP Forms and General Correspondence (except as listed below)

  • Fax Number:
    1-866-817-5023
  • Mailing Address:
    Thrift Savings Plan
    P.O. Box 385021
    Birmingham, AL 35238


Court Orders and Legal Process Actions

Use this post office box if you are sending the TSP a court order or legal process, power of attorney, guardianship or conservatorship order, Exception to Spousal Requirements (Form TSP-16/TSP-U-16), Privacy Act request, tax levy, or associated correspondence. Also, if you are the recipient of a court-ordered payment, the forms sent to you with the decision letter (e.g., Spouse's Election of Payment Method (Form TSP-13-S-C/ U-13-S-C), W-4Ps, or the request to waive the waiting period) should be returned to this post office box. Inquiries regarding these actions should also be sent to this address.

  • Fax Number:
    (703) 592-0151
  • Mailing Address:
    TSP Legal Processing Unit
    P.O. Box 4390
    Fairfax, VA 22038-4390
  • Overnight Delivery:
    ATTN: TSP Legal Processing Unit
    12210 Fairfax Town Center
    Unit 906
    Fairfax, VA 22033


Federal Tax Levies and Criminal Restitution Orders

Use this post office box if you are sending the TSP a Federal tax levy or a restitution order pursuant to the Mandatory Victims Restitution Act (MRVA).

  • Fax Number:
    (703) 592-0151
  • Mailing Address:
    TSP Legal Processing Unit
    P.O. Box 4570
    Fairfax, VA 22038-9998
  • Overnight Delivery:
    ATTN: TSP Legal Processing Unit
    12210 Fairfax Town Center
    Unit 906
    Fairfax, VA 22033


Death Benefit Claims

Use this post office box if you are submitting a death benefit claim for a TSP account. This includes Form TSP-17/U-17, Information Relating to Deceased Participant, death certificates, or other documentation. If you are the recipient of a death benefit payment, the forms sent to you with the "Intent to Pay" letter (e.g., W-4Ps or the request to waive the waiting period) should be returned to this post office box. Inquiries regarding these actions should also be sent to this address.

  • Fax Number:
    (703) 592-0170
  • Mailing Address:
    TSP Death Benefits Processing Unit
    P.O. Box 4450
    Fairfax, VA 22038-4450
  • Overnight Delivery:
    ATTN: TSP Death Benefits Processing Unit
    12210 Fairfax Town Center
    Unit 906
    Fairfax, VA 22033


Loan Payments (Form TSP-26, Loan Payment Coupon with payment)

  • Mailing Address:
    Thrift Savings Plan
    P.O. Box 979004
    St. Louis, MO 63197-9000
  • Overnight Delivery:
    US Bank
    Box 9004
    Government Lockbox SL-MO-C2GL
    1005 Convention Plaza
    St. Louis, MO 63101


Transfers or Rollovers of Funds to the TSP

Use this post office box if you are transferring or rolling over funds to the TSP. This includes Form TSP-60/U-60, Request for a Transfer Into the TSP, the associated check for the funds, and any additional documentation. Inquiries regarding these actions should also be sent to this address.

  • Fax Number:
    1-866-458-1452 (toll free) or (205) 439-4501 (not toll free)
  • Mailing Address:
    TSP Rollover and Transfer Processing Unit
    P.O. Box 385200
    Birmingham, AL 35238-5200
  • Overnight Delivery:
    IBS - TSP Processing Unit
    10 Inverness Center Parkway, Suite 610
    Birmingham, AL 35242
NOTE: Do not submit any withdrawal forms to these addresses. Instead, use the "TSP Forms and General Correspondence" address above.