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### Witness Requirements for TSP-3 Form (Designation of Beneficiary)
The Thrift Savings Plan (TSP) Form TSP-3 is used by federal civilian employees and uniformed services members to designate beneficiaries for their TSP account. As of 2025, the TSP strongly recommends completing beneficiary designations **online through My Account** at tsp.gov, which does not require witnesses. However, if submitting a paper form (e.g., due to access limitations), use the current version dated **05/2017**—earlier editions are obsolete and invalid.
The paper form requires **only one witness** (a change implemented in May 2017 to simplify the process, down from two previously required). The witness must meet these criteria:
- Be **21 years of age or older**.
- **Not be designated** as a primary or contingent beneficiary on the form (doing so invalidates the witness's role and may affect the form's validity).
- Sign in **black or dark blue ink** (no pencils, alterations, or white-out allowed).
#### Information Required from the Witness
In **Section IV: Signatures** (on page 1 and replicated on every subsequent page, including any photocopied additional sheets for more beneficiaries), the witness must provide:
- **Printed full name** (legibly typed or handwritten).
- **Signature** (handwritten; must match the printed name).
- **Date signed** (in MM/DD/YYYY format; all signatures on the form must be dated the same day).
By signing, the witness affirms **under penalty of perjury** that:
- The participant (you) signed the form in the witness's presence, **or**
- The participant acknowledged to the witness that the signature is their own (even if signed earlier).
The **same single witness** must sign and date **every page** of the form, including any attached blank sheets for additional beneficiaries (e.g., up to 8 primaries or 4 contingents). Incomplete witnessing invalidates the entire form.
#### Submission and Tips
- Mail the original signed form to: Thrift Savings Plan, P.O. Box 385021, Birmingham, AL 35238-5021, or fax to 1-866-817-5042.
- Keep a copy for your records, but do not submit via agency personnel—they cannot process or file it.
- Online designations automatically override paper forms and require no witnesses—update via My Account after life events.
- If no valid designation is on file, TSP follows the statutory order of precedence (spouse first, then children, etc.).
For the form and full instructions, visit tsp.gov/forms or call 1-877-968-3778. Always use the latest version to avoid rejection.
What information is required from a witness signing a tsp change to beneficiary form?
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