Missouri Estate Planning Checklist 2026: What Every Resident Needs to Review

Estate planning is not a task you complete once and forget. Missouri law changes, family circumstances change, and the assets you own today may look very different five years from now. Without regular reviews, even a well-designed estate plan can become dangerously outdated — leaving loved ones to sort through probate, pay avoidable costs, and fight over what you actually intended.

This Missouri estate planning checklist walks through every document and decision that should be in place for 2026. It is built from the same framework our attorneys use with clients across Missouri. Work through it item by item, and contact us when you find gaps that need to be filled.

Why Your Missouri Estate Plan Needs a 2026 Review

Several developments have made 2026 an important year to review your estate plan. Missouri courts have issued clarifications affecting beneficiary deed transfers and how non-probate assets interact with probate claims. Federal estate tax exemptions remain in flux pending Congressional action. And the Missouri Trust Code (RSMo Chapter 456) continues to shape how revocable trusts operate in the state.

If your documents were drafted more than three years ago — or after any significant life event — there is a real chance that something no longer reflects your wishes or complies with current law.

The Complete Missouri Estate Planning Checklist

✅ 1. Last Will and Testament

A valid Missouri will must be in writing, signed by the testator, and witnessed by at least two competent adults who sign in the testator’s presence (RSMo § 474.320). A self-proving affidavit — requiring notarization — is strongly recommended because it eliminates the need to locate and depose witnesses during probate.

Your will should name:

• A personal representative (executor) to manage the estate through probate
• Alternate beneficiaries in case a primary beneficiary predeceases you
• A guardian for minor children, with an alternate if your first choice cannot serve
• Specific gifts or devises if you have personal property with sentimental value

✅ 2. Revocable Living Trust

A revocable living trust is the most comprehensive probate-avoidance tool available to Missouri residents. Governed by the Missouri Trust Code (RSMo Chapter 456), a properly funded trust allows assets to pass to beneficiaries within weeks of death — privately, without court intervention, and at significantly lower cost than probate.

The most critical checklist item tied to a trust is funding. Review every asset you own and confirm it is either titled in the name of the trust or has the trust designated as beneficiary. Missouri courts have seen increasing numbers of unfunded trusts reach probate in 2026, leaving heirs without the protection the decedent intended.

A pour-over will should accompany every trust to capture assets inadvertently left outside it.

✅ 3. Durable Power of Attorney for Finances

A durable power of attorney (DPOA) authorizes an agent to manage your financial affairs if you become incapacitated. Missouri’s Durable Power of Attorney Act (RSMo § 404.710 et seq.) requires the document to be signed and notarized. Without a valid DPOA, your family may need to petition the court for a conservatorship — an expensive, time-consuming process that becomes fully public record.

Review your DPOA for these issues:

• Is the named agent still willing and able to serve?
• Does the document grant broad enough authority (banking, real estate, tax filings, business operations)?
• Is there an alternate agent if your primary agent cannot serve?
• Is the document recent enough that financial institutions will honor it without questioning its validity?

✅ 4. Healthcare Power of Attorney

A healthcare power of attorney (HCPOA) designates someone to make medical decisions on your behalf if you cannot do so. This document is separate from your advance directive and is recognized under RSMo § 404.820. Your agent should understand your values around medical treatment and be willing to advocate firmly on your behalf in a hospital or care facility setting.

Many Missouri families designate a spouse as primary agent and an adult child as alternate. Confirm the current status of both.

✅ 5. Advance Directive (Living Will)

Missouri’s advance directive expresses your wishes regarding life-sustaining treatment when you have a terminal condition or are in a persistent vegetative state (RSMo § 459.010). Without one, healthcare providers and family members may face agonizing decisions without guidance — and family members may disagree, creating conflict at the worst possible moment.

Your advance directive should address:

• Cardiopulmonary resuscitation (CPR)
• Mechanical ventilation
• Artificial nutrition and hydration
• Pain management and palliative care preferences

✅ 6. Beneficiary Designations

Beneficiary designations control who receives retirement accounts (IRAs, 401(k)s, 403(b)s), life insurance policies, annuities, and payable-on-death bank accounts. These designations pass assets outside of your will and outside of your trust — making them one of the most important, and most frequently neglected, elements of an estate plan.

Common errors that create serious problems:

• Deceased beneficiary listed — forces account through probate or passes to unintended heirs
• Ex-spouse still named — divorce does not automatically remove a beneficiary; courts may be powerless to redirect the account
• Minor child named directly — minors cannot legally receive significant assets; a court must appoint a guardian of the property
• No contingent (backup) beneficiary — if the primary beneficiary predeceases you and no contingent is named, the account goes through probate

✅ 7. Missouri Beneficiary Deed

A Missouri beneficiary deed (also called a transfer-on-death deed) allows real property to pass directly to a named beneficiary without probate (RSMo § 461.025). The deed must be recorded with the county recorder of deeds before death to be effective. It does not affect your ownership rights during your lifetime — you can sell, mortgage, or lease the property, and you can revoke or change the beneficiary at any time.

If you own Missouri real estate that is not held in a trust, a beneficiary deed is often the simplest and most cost-effective way to keep that property out of probate.

✅ 8. Digital Assets and Online Accounts

Digital assets include online banking, cryptocurrency, investment platforms, social media accounts, email archives, domain names, and cloud storage. Missouri has adopted provisions aligned with the Revised Uniform Fiduciary Access to Digital Assets Act, giving fiduciaries legal access to these accounts when properly authorized.

Your estate plan should include a digital asset memorandum listing account usernames, password manager access, and your wishes for each account. Store this document securely and tell your executor or trustee where to find it.

✅ 9. Minor Children and Guardianship

Without a guardianship designation in your will, a Missouri probate court selects who raises your minor children if both parents die. The court’s choice may not match yours. Naming a guardian — and a backup guardian — is one of the most important things any parent can do.

Also consider whether a testamentary trust or revocable trust should hold your children’s inheritance until they reach an age you consider appropriate. Outright distributions to an 18-year-old are rarely what parents intend.

✅ 10. Review for Post-Execution Life Changes

Trigger a plan review any time the following occur:

• Marriage or divorce
• Birth or adoption of a child or grandchild
• Death of a named beneficiary, executor, trustee, or agent
• Significant increase or decrease in asset values
• Acquisition or sale of real estate
• Starting, buying, or selling a business
• Diagnosis of a serious illness in yourself or a named fiduciary
• Relocation to or from Missouri

What Happens Without a Current Estate Plan in Missouri

Missouri’s intestate succession laws (RSMo § 474.010) determine who inherits when someone dies without a valid will. The results often surprise families. A surviving spouse does not automatically receive everything — Missouri’s intestacy formula divides the estate between the spouse and surviving children, which can force a sale of the family home to distribute the proceeds.

Probate under intestacy is also public. Anyone can access the court file to see what you owned, who your heirs are, and how the estate was distributed. A complete estate plan avoids this exposure entirely.

When to Bring in a Missouri Estate Planning Attorney

Several checklist items require legal expertise to execute correctly. A will with improper witness signatures may be challenged in probate. A trust that is not properly funded offers no protection. A power of attorney with insufficient authority may leave your agent unable to act when it matters most.

Working through this Missouri estate planning checklist with an attorney at Mid-America Law Practice ensures each document is not just signed — but correctly drafted, properly executed, and fully integrated into a plan that protects your family. Our attorneys have helped Missouri residents structure estates that hold up when tested.

Missouri probate court records and procedural information are available through the Missouri Judiciary website for reference.

Frequently Asked Questions: Missouri Estate Planning Checklist

1. How often should a Missouri estate plan be reviewed?

At minimum every three to five years, and immediately after any major life event — marriage, divorce, birth of a child, death of a beneficiary, or significant change in assets.

2. Does a will avoid probate in Missouri?

No. A will must be submitted to the Missouri probate court before it takes legal effect. Only tools like living trusts, beneficiary deeds, and POD designations avoid probate.

3. How many witnesses does a Missouri will require?

Two competent adult witnesses who sign in the presence of the testator. A self-proving affidavit with notarization is strongly recommended.

4. What is a Missouri pour-over will?

A pour-over will directs any assets not transferred into your living trust during your lifetime to be “poured over” into the trust at death, where trust terms govern their distribution.

5. Can I write my own will in Missouri?

Missouri does not recognize handwritten (holographic) wills except in limited circumstances. An attorney-drafted will is significantly more likely to survive a probate challenge.

6. What is a Missouri beneficiary deed?

A transfer-on-death deed that allows real estate to pass directly to a named beneficiary without probate (RSMo § 461.025). It must be recorded during your lifetime and can be revoked at any time.

7. Who should I name as executor in Missouri?

Someone trustworthy, organized, and comfortable dealing with financial and legal tasks. Name an alternate in case your first choice cannot serve.

8. Do I need a healthcare power of attorney and a living will?

Yes — they serve different purposes. A healthcare POA names an agent to make decisions; a living will expresses your specific wishes regarding life-sustaining treatment.

9. How are minor children protected in a Missouri estate plan?

By naming a guardian in your will and creating a trust (testamentary or revocable) that holds the child’s inheritance until a specified age rather than distributing it outright at 18.

10. What does Missouri intestacy law say if I die without a will?

Under RSMo § 474.010, the estate is divided between your surviving spouse and children according to a statutory formula — which may not reflect what you actually wanted. The spouse does not automatically receive everything.

Ready to work through this checklist with someone? Our Chesterfield estate planning attorneys handle wills, trusts, powers of attorney and healthcare directives. Contact Mid-America Law Practice to book a consultation.