Estate Planning Documents for Military Families: What They Are and Why They Matter
This is Part 2 of a two-part series on military estate planning basics. Part 1 covers beneficiary designations, including TSP, SGLI, IRAs, and bank accounts.
A note before continuing: this article is educational only. It defines common estate planning documents so readers can approach professional conversations with a clearer understanding of the landscape. It is not legal advice, and no part of it should be treated as such. Estate planning is governed by state law and is highly specific to individual circumstances. For documents that reflect those circumstances accurately and hold up legally, a qualified estate planning attorney is the right resource.
Estate planning has two distinct layers. The first is beneficiary designations, which are direct account-level instructions that determine who receives certain assets when the owner dies. They require no attorney, no probate, and no court involvement. The second layer is legal documents. Wills, trusts, powers of attorney, healthcare directives, and a few supporting tools fill the gaps that beneficiary designations cannot cover.
They address questions like:
Who makes decisions if a service member becomes incapacitated during a deployment?
Who raises the children if both parents pass away?
What happens to property that has no beneficiary designation?
What medical treatment does a service member want if they cannot speak for themselves?
Why Timing Matters More in a Military Life
Military life creates a natural but problematic pattern around estate planning: documents get drafted in the rush before a deployment and forgotten before the ink dries on the signature pages. The urgency of a workup gets the paperwork done, but urgency alone is not a planning strategy.
The documents covered in this article are not static. A will that named a guardian for one child does not automatically account for a second. A power of attorney drafted for one deployment may name someone who is no longer part of the picture. A healthcare directive signed at 24 may not reflect the same priorities at 40. Each of these documents has a shelf life that is tied to life circumstances, not to the calendar, and military life generates more circumstance changes per decade than almost any other career path.
The goal of reviewing these documents is not to redo everything after every PCS move or promotion. It is simply to confirm, on a reasonable schedule, that what is on file still reflects what the service member actually wants.
Estate Planning Is State Law, Not Federal Law
This is one of the most important and least understood facts about estate planning, and it carries particular weight for military families who move frequently.
Unlike federal benefits such as SGLI or the Thrift Savings Plan, estate planning documents are governed by state law. Each state has its own rules for how a will must be signed and witnessed, how probate works, what rights a surviving spouse holds, how healthcare directives are recognized, and what language a power of attorney must contain to be enforceable.
Domicile, not duty station, is the controlling factor. A service member's domicile is their permanent legal home, the state they consider their true home base and intend to return to. The Service members Civil Relief Act (SCRA) explicitly protects a service member's right to maintain their domicile in a given state regardless of where military orders have sent them. A PCS move alone does not change legal domicile, and it does not automatically invalidate existing estate planning documents.
That said, there are real complications to understand. A will is generally probated in the domicile state, but real estate located in another state may require a separate probate proceeding in that state, known as ancillary probate, adding time and cost for surviving family members. Healthcare directives have state-specific formats, and a document valid in one state may not match the standard form used in another. Powers of attorney are broadly recognized across state lines, but some banks and title companies push back if the document's language does not satisfy local requirements.
It is also worth understanding that domicile state and duty station state are likely not going to be the same thing at the time documents are drafted. A service member who visits the JAG office at their installation is receiving documents prepared under the law of the state where that attorney is licensed and practicing, which is typically the duty station state, not necessarily the domicile state. That distinction matters, and it is covered in more detail in the Military-Specific Considerations section below.
While PCS move is not a reason to panic about existing documents, with all of these complexities, a PCS is a natural checkpoint to confirm your documents still reflect current intentions and remain as effective as possible. A PCS is a great time for a review with a qualified attorney.
Core Estate Planning Documents Defined
Last Will and Testament
A last will and testament is a legal document that expresses how a person wants their assets distributed after death, names an executor to carry out those instructions, and, for parents of minor children, designates a guardian.
A will only takes effect at death. It has no authority during the person's lifetime. It also only controls assets that are part of the probate estate. Assets with beneficiary designations, such as TSP accounts, SGLI proceeds, and IRAs, pass entirely outside the will regardless of what the will says.
A will must go through probate, a court-supervised process to validate the document and oversee the distribution of assets. Timelines and costs vary significantly by state.
For military families with children, a will is also the appropriate place to designate a guardian and, separately, to address in loco parentis arrangements. In loco parentis is a Latin term meaning "in the place of a parent."
The specific scenario it guards against is one that military families face in a way most civilian families do not:
A service member is deployed overseas and the caregiving spouse dies unexpectedly at home. There is no one with immediate legal authority to care for the children. Without an in loco parentis designation in place, those children may enter the child welfare system while the deployed parent and/or out-of-state family members work through the logistics of getting to the children.
An in loco parentis designation identifies a trusted, local person who can step in immediately and care for the children in the gap between the emergency and the arrival of the named guardian. It does not replace the guardian. It bridges the window.
Meet SSgt Henderson: Staff Sergeant Marcus Henderson and his wife Elena have two children under age ten. Their financial accounts are straightforward and mostly carry beneficiary designations. What a will does for them is name each other as executors, address any personal property and accounts without designations, and, most importantly, name an in loco parentis and a guardian for their children if both parents were to pass away. Without a will, a court makes all of these determinations without any input from Marcus and Elena. For a family at this stage, a basic will can accomplish a great deal without complexity.
Revocable Living Trust
A revocable living trust is a legal arrangement in which a person, called the grantor, transfers assets into a trust that they typically also manage as the trustee during their lifetime. The trust document names a successor trustee to take over if the grantor becomes incapacitated or dies, and it names beneficiaries who receive the assets at death.
The word "revocable" means the grantor can change or dissolve the trust at any time while alive and mentally competent. The defining advantage over a will is that assets held in a properly funded trust generally avoid probate. They transfer according to the trust document, often far more quickly and privately than a court-supervised process allows. A trust is also active during the grantor's lifetime, which means a successor trustee can step in during incapacity without requiring a court to act.
A trust is more complex and more expensive to establish than a will. It also requires that assets be formally transferred into it, a process called funding. A trust that has never been funded accomplishes very little.
Meet LtCol Sanchez: After 22 years of service, Lieutenant Colonel Sandra Sanchez is divorced with two adult children. She owns a rental property in Virginia and a home in North Carolina where she now lives. She also has a TSP account, a Roth IRA, and a substantial taxable investment account. Without a trust, her estate would likely require probate proceedings in both Virginia and North Carolina to address the real property in each state. A revocable living trust holding both properties could allow those assets to transfer to her named beneficiaries without two separate probate proceedings, reducing both cost and delay for her adult children. Multi-state property is one of the most common scenarios where a trust structure addresses a real and specific problem.
Power of Attorney: Durable and Springing
A power of attorney (POA) is a legal document that authorizes one person, called the agent, to act on behalf of another person, called the principal, in financial and legal matters.
A general POA grants broad authority over financial and legal affairs but terminates automatically if the principal becomes incapacitated. That limitation is significant, because the moment a principal loses capacity is often exactly when a POA is most needed. A durable POA solves this by including specific language that keeps it in force through incapacity. It takes effect when signed and remains valid unless revoked or the principal dies.
A springing POA does not take effect immediately. It activates only when a specified triggering event occurs, most commonly a formal determination of incapacity. This gives the principal more control over when the agent's authority begins, but can create delays if the triggering event is difficult to certify quickly in an emergency.
Many military legal assistance offices limit POA duration to one year for certain document types, which is a practical consideration for service members obtaining one before deployment.
Healthcare Power of Attorney / Medical POA
A healthcare power of attorney designates a specific person to make medical decisions on behalf of the principal when the principal cannot communicate or make decisions independently. It is a separate document from a financial POA and serves a different function entirely. A financial POA does not extend to healthcare decisions.
The named agent can communicate with medical providers, review records, and consent to or decline treatments based on the principal's known wishes. The agent's authority is typically limited to periods when the principal cannot make decisions, not as a general override.
Advance Directive / Living Will
An advance directive, often called a living will, is a legal document in which a person records their own wishes regarding medical treatment in the event of incapacity. It is distinct from a healthcare POA in one important way: a healthcare POA names a person to make decisions, while an advance directive records the principal's own instructions directly.
Common provisions include preferences regarding life-sustaining measures such as mechanical ventilation, tube feeding, and resuscitation, as well as comfort care priorities. An advance directive provides guidance to both the appointed healthcare agent and to medical providers directly.
State law governs the form and requirements, and formats differ from state to state. For military families who move frequently, this is another reason to revisit healthcare documents after a change of domicile.
Letter of Instruction
A letter of instruction is not a legal document. It requires no attorney, no notary, and no witnesses, and it carries no binding legal authority. What it provides is practical guidance to surviving family members at a moment when they may be overwhelmed and searching for answers.
A letter of instruction typically includes the location of important documents, financial account information, contact details for key advisors, wishes regarding funeral and burial arrangements, and any personal messages the writer wants to leave behind. For military families specifically, it is a natural place to document information about Survivor Benefit Plan (SBP) elections, VA disability ratings, and the location of the DD-214, all of which a surviving spouse will need to access benefits efficiently.
Because it is informal, it can be updated easily and often without any professional assistance. Its value is frequently underestimated.
Military-Specific Considerations
JAG Legal Assistance is available at no cost to active-duty service members and their eligible family members through installation Legal Assistance Offices. Retired service members entitled to retired pay and their dependents are also generally eligible, but are prioritized behind active-duty service members. JAG offices can draft wills, durable powers of attorney, healthcare powers of attorney, and advance directives. One important limitation: JAG legal assistance offices typically do not draft revocable living trusts. Service members who need a trust-based plan should seek a civilian estate planning attorney, and JAG offices can often provide referrals.
Beneficiary designations still override wills. This point bears repeating. No matter what a will says, a valid beneficiary designation on a TSP account, SGLI policy, IRA, or payable-on-death bank account controls that asset. Both layers of an estate plan need to be aligned, not treated as independent decisions.
Create review checkpoints. A PCS move does not invalidate existing documents, but it is a natural moment to confirm that current documents still reflect current intentions, that beneficiary designations are up to date, and that any life changes since the last review warrant updates. Like many other financially-related responsibilities, find a cycle that works for you and plug it in your calendar!
Final Thoughts
Understanding what these documents are and how they work is the first step toward an estate plan that actually does what a service member intends. An informed person who walks into a legal assistance appointment or a civilian attorney's office already knowing the difference between a healthcare power of attorney and an advance directive, or understanding why a trust may handle multi-state property differently than a will, will get far more value out of that conversation.
These documents and the beneficiary designations covered in Beneficiary Designations work as a complete system. Together, they give military families the clearest path for their assets and their wishes to reach the right people, at the right time, with as little friction as possible.
Disclaimer: This article is provided for educational, general information, and illustration purposes only. Nothing contained in the material constitutes tax advice, a recommendation for purchase or sale of any security, investment advisory services, or legal advice regarding estate matters. I encourage you to consult a financial planner, accountant, and/or legal counsel for advice specific to your situation. Read the full disclosure.