Updated August 6, 2026. Quick answer: a Thrift Savings Plan beneficiary designation can be made without your spouse’s knowledge or consent — which is the opposite of the rule most private-sector plans follow — and it only counts if the record keeper received it before you died. Both facts are in the regulation, and both catch people.
No spousal consent, and that cuts both ways
5 C.F.R. §1651.3(b): “A beneficiary may be designated without the knowledge or consent of that beneficiary or the knowledge or consent of the participant’s spouse.”
That is worth sitting with, because it inverts the expectation most people bring from private-sector plans. Under ERISA a married participant in a typical employer plan generally needs the spouse’s written consent to name someone else — the consent rule and what it protects. The TSP’s designation rule does not work that way.
Read it in both directions. It means a participant can direct the account deliberately without a negotiation. It also means a spouse can be left off without ever being told, and will not discover it until the death benefit is paid to somebody else. If you are married and assume the law has you covered here, it does not.
“Received” is the word that decides it
Under §1651.3(c), a designation must, to be valid and accepted, “[b]e received by the TSP record keeper on or before the date of the participant’s death”, identify the participant well enough to locate the account, and be signed and properly dated.
Signed is not enough. Posted is not enough. A form completed correctly on a Tuesday and received on the Friday after a Thursday death does not govern the account. This is the same failure mode as serving a divorce order on the wrong office — receipt by an employing agency is not receipt by the plan — and it is the reason to confirm the designation is on file rather than assume it.
A valid designation “remains in effect until it is properly changed”. It does not lapse, and it is not updated by a divorce, a remarriage or a new will. An old form keeps working exactly as written.
Who you can name, and how many
The rule is unusually permissive. “Any individual, firm, corporation, or legal entity, including the U.S. Government, may be designated as a beneficiary”, and a participant “can name up to 20 total (primary and contingent) beneficiaries to share the death benefit.”
Twenty is more headroom than most plans allow, and the contingent layer is the part people skip. Naming a contingent beneficiary is what stops the account falling back to a default order if the primary dies first — the same discipline that matters on any account that pays by form rather than by will, and the general case is on which document controls when the two disagree.
If a trust is the intended recipient, the interaction with the ten-year payout rules is a separate question worth reading first — what happens to an inherited TSP.
If there is no valid designation: the statutory order
This is the part the page could not state when it was first published, and it is now verified. 5 C.F.R. §1651.2(a): the account balance “will be paid as a death benefit to the individual or individuals surviving the participant, in the following order of precedence” —
- To the beneficiary or beneficiaries designated by the participant;
- if there is no designated beneficiary, to the spouse;
- then to the child or children, and descendants of deceased children by representation;
- then to the parents, in equal shares or entirely to the surviving parent;
- then to the duly appointed executor or administrator of the estate.
Read where your will appears in that list: it does not. The estate is fifth, and it is reached only when there is no designation, no spouse, no children or their descendants, and no surviving parent. Until every one of those is exhausted, the will has no bearing on the account at all — which is the same principle that governs any pay-by-designation asset, applied by a federal regulation rather than a plan document.
The practical consequence is the one worth acting on: if your intended recipient is anyone other than the person the order would reach anyway, only a filed designation gets them there.
Sources
5 C.F.R. §1651.3 (Federal Retirement Thrift Investment Board, Part 1651 — Death Benefits), read at the Legal Information Institute on 2026-08-06. Quotations are from the regulation text. We cite the regulations rather than the TSP’s own booklets because tsp.gov did not serve us, and because the regulations are the operative law in any event.
Honest gap, now closed. An earlier version of this page covered only designation and said plainly that we had not read the statutory order of precedence to our standard and would not summarise it from memory. It has since been read at §1651.2(a) and is published above. What remains uncovered: the detailed rules for each tier (§§1651.5–1651.7), and the treatment of loans and the mutual fund window at death.
See methodology and corrections. General information about published regulations, not legal advice. No advertising appears on this page.