Inheriting a TSP Account: Spouse vs. Non-Spouse Beneficiary Rules Explained | Fed Pilot
Your TSP balance is likely the largest single asset you’ll leave to your family. But the rules for what your spouse, children, or other heirs can do with your TSP account after you die are very different from the rules governing an inherited 401(k) or IRA at a private brokerage. The differences come down to one TSP-specific feature — the Beneficiary Participant Account — and how the SECURE Act’s 10-year payout rule applies to non-spouse beneficiaries. Federal employees and retirees who don’t understand both can leave their heirs with a surprise tax bill, a forced lump-sum distribution, or a frozen account.
The short answer: A TSP account passes according to the TSP-3 beneficiary designation — not your will. Surviving spouses can keep the balance inside TSP as a Beneficiary Participant Account (BPA) with flexible withdrawal options. All other beneficiaries — adult children, siblings, trusts — must distribute the full balance within 10 years under the SECURE Act, or take a lump sum.
Key Takeaways
- Your TSP-3 form controls who inherits your TSP and overrides your will — the statutory order of precedence (5 U.S.C. § 8424) applies only if no TSP-3 is on file.
- Surviving spouses can retain the inherited balance inside TSP as a Beneficiary Participant Account, with access to TSP’s low expense ratios and flexible RMD-compliant withdrawals.
- The BPA does not transfer at the surviving spouse’s death — the remaining balance must pay out as a lump sum to next-tier beneficiaries (no second-generation BPA).
- Non-spouse beneficiaries must fully distribute within 10 years under the SECURE Act; “eligible designated beneficiaries” (minor children, disabled, chronically ill) may stretch over their own life expectancy.
- Naming your estate as TSP beneficiary — or having no TSP-3 on file — can eliminate the 10-year stretch, forcing a lump-sum payout and a large one-year tax bill.
Who Inherits Your TSP Account if You Die?
Your TSP account passes according to your TSP beneficiary designation — the TSP-3 form on file with the Thrift Savings Plan. If you have not filed a TSP-3, your account passes according to the statutory order of precedence under 5 U.S.C. § 8424: (1) spouse, (2) children in equal shares, (3) parents, (4) appointed executor or administrator of your estate, (5) next of kin under state intestacy law.
The order of precedence overrides your will. If you put your spouse in your will but never filed a TSP-3 and the statutory order names your children, the children inherit the TSP — full stop. File a TSP-3 with current beneficiaries and re-file after every major life event. See our companion piece on TSP beneficiary designations for the full mechanics.
What Can a Surviving Spouse Do With an Inherited TSP?
Surviving spouses get a unique TSP benefit no other beneficiary receives: the option to keep the inherited TSP balance inside TSP itself as a Beneficiary Participant Account (BPA). The BPA is set up automatically when TSP processes the death claim, assuming the spouse’s balance is at least $200.
- The spouse keeps TSP’s low expense ratios — currently among the lowest in any retirement plan in the U.S.
- The spouse can take withdrawals on their own schedule, subject to required minimum distribution rules once they reach age 73 (or 75 for those born in 1960 or later, under SECURE 2.0).
- The spouse can transfer the balance to an IRA at any time if they want different investment options.
- The spouse can roll the BPA into their own TSP account if they are also a federal employee or retiree.
The BPA has one major catch: it does not transfer at the BPA holder’s death. When the surviving spouse dies, the BPA must be paid out as a lump sum — there is no second-generation BPA. This catches many families off guard. Read our broader guide on TSP withdrawal options in retirement for context on how this interacts with withdrawal planning.
What Are a Non-Spouse Beneficiary’s Options for an Inherited TSP?
Non-spouse beneficiaries — adult children, grandchildren, siblings, partners, charities, or trusts — cannot keep the inherited TSP inside TSP. They have two options:
- Take a single lump-sum distribution from TSP, with taxes due in the year received.
- Transfer the balance to an Inherited IRA at a custodian of their choice, which preserves tax-deferred growth but starts the 10-year clock.
Under the SECURE Act (effective 2020), most non-spouse beneficiaries must fully distribute the inherited account by the end of the 10th year after the death of the TSP participant. IRS rules finalized in 2024 clarify that when the original participant had already started RMDs, annual distributions are required during years 1–9 as well — not just a single distribution in year 10.
A federal retiree’s adult child inheriting a $600,000 TSP balance can either take it all at once (and pay tax at the highest marginal rate) or stretch it over 10 years inside an Inherited IRA. Stretching is almost always the better choice — but it requires the beneficiary to act within deadlines. Note: the transfer must be a direct trustee-to-trustee transfer — a check to the beneficiary does not qualify.
Who Qualifies as an Eligible Designated Beneficiary?
Some non-spouse beneficiaries qualify as “eligible designated beneficiaries” (EDBs) and can stretch withdrawals over their own life expectancy: minor children (until age 21, then the 10-year clock starts), disabled or chronically ill beneficiaries, and beneficiaries less than 10 years younger than the deceased participant (often a sibling or older partner). If your TSP beneficiaries include any of these categories, document their EDB status carefully when the death claim is filed.
How Are Inherited TSP Accounts Taxed?
Inherited Traditional TSP balances are taxed as ordinary income when distributed. Inherited Roth TSP balances are tax-free if the original participant met the 5-year holding rule — which most long-tenured federal employees have.
For non-spouse beneficiaries forced to withdraw over 10 years, the tax math is unforgiving. A $500,000 Traditional TSP taken as $50,000/year pushes the average beneficiary into a higher bracket every year — especially if they’re already working professionals in peak earning years. For Roth TSP, there is no tax cost to the 10-year stretch — only the loss of continued tax-free growth. Most planners recommend taking Roth distributions in year 10 to maximize tax-free compounding.
Federal estate tax is generally not a concern: the One Big Beautiful Bill Act (signed July 4, 2025) increased the federal basic exclusion to $15 million per person ($30 million for married couples). But several states have far lower thresholds — Massachusetts taxes estates above $2 million, Oregon above $1 million. State-level planning matters even when federal estate tax doesn’t.
What Are the Most Expensive TSP Inheritance Mistakes?
Letting the Estate Inherit
If your TSP-3 names your estate (or no TSP-3 exists and the order of precedence reaches the estate level), the inherited account loses access to the Inherited IRA stretch and must pay out within five years. Always name individuals — not “my estate” — on your TSP-3.
Missing the Spousal Rollover Deadline
A spouse who wants to roll the BPA into their own TSP must do so within specific windows. Missing those deadlines can lock the funds into the BPA structure permanently, eliminating flexibility for the next generation.
Taking a Lump Sum When a Stretch Was Available
Many non-spouse heirs panic and withdraw the entire TSP balance as a lump sum — paying the maximum tax bracket on the windfall — when a direct transfer to an Inherited IRA and a 10-year stretch was available. Act deliberately, not quickly.
Not Updating the TSP-3 After Divorce
A forgotten ex-spouse on a TSP-3 inherits the account regardless of what your divorce decree says. Court-ordered apportionments through a Retirement Benefits Court Order can override beneficiary designations during life, but the TSP-3 is controlling at death.
What Steps Should You Take Now to Protect Your TSP Beneficiaries?
- Pull your current TSP-3 from your TSP account online. Verify the names, addresses, and percentages are current.
- Confirm your beneficiaries match your current intent — especially after marriage, divorce, or a child’s death.
- Tell your heirs what they’ll be inheriting and how the BPA and 10-year rules work. Surprise inheritances are rarely a kindness — they’re tax events in disguise.
- If you want specific dollar amounts to specific people, consult an estate attorney about whether a trust as beneficiary makes sense (TSP’s rules on trust beneficiaries are restrictive).
The TSP-3 takes five minutes to update. Leaving it wrong can cost your family hundreds of thousands of dollars.
Frequently Asked Questions
If my spouse inherits my TSP in a BPA and then dies, what happens to the remaining balance?
The remaining BPA balance must be paid as a lump sum to the next-tier beneficiaries the surviving spouse named. There is no second-generation BPA — this is one of TSP’s most consequential design quirks.
Can a non-spouse beneficiary roll an inherited TSP to their own IRA?
No. Non-spouse beneficiaries must transfer to an Inherited IRA (a separate account type). The 60-day rollover rule does not apply — the transfer must be a direct trustee-to-trustee transfer. A check made out to the beneficiary disqualifies the stretch option.
Does my Roth TSP pass to heirs tax-free?
Yes, if the 5-year holding period was met by the original participant. Beneficiaries still follow the 10-year distribution rule, but qualified distributions from Roth TSP carry no income tax.
Can I name a trust as my TSP beneficiary?
Yes, but TSP distributes to a trust as a lump sum — it doesn’t allow the 10-year stretch for trusts the way an Inherited IRA does. This usually makes a trust a suboptimal TSP beneficiary. Consult an estate attorney before naming one.
If I update my TSP-3 after divorce, does my ex-spouse have any automatic rights?
Not after a new TSP-3 is filed removing the ex-spouse. However, a Retirement Benefits Court Order (RBCO) issued during the divorce can override the TSP-3 during your lifetime. At death, the TSP-3 on file at the time of death controls.
What if I have no TSP-3 on file and both my spouse and adult children are alive?
TSP’s statutory order gives your spouse first priority. But because the order of precedence can’t match every family structure, you should always file a TSP-3 — it takes five minutes and eliminates ambiguity entirely.
A TSP account is a wonderful asset to inherit — but only if the original participant did the planning. Spouses have flexible options through the BPA. Non-spouse beneficiaries are bound by the SECURE Act’s 10-year rule. Estates and improperly named beneficiaries face the harshest outcomes. The single best thing you can do for your heirs is file an accurate, current TSP-3 and tell them where to find it.
Fed Pilot’s free retirement workshops cover beneficiary designations, estate-planning coordination, and TSP withdrawal strategies that protect your spouse and heirs.
