Estate Planning in Missouri: The Complete Guide (Updated 2026)

By Patrick Nolan, Estate Planning Attorney at Nolan Law Firm in Kirksville, Missouri. Flat-fee plans — no hourly billing surprises.

What Is Estate Planning in Missouri?

Estate planning controls exactly three things: who gets your stuff when you die, who makes decisions for you if you’re alive but incapacitated, and who raises your minor children. That’s it. Everything else — the documents, the legal language, the funding steps — exists to serve those three purposes. At minimum, every Missouri adult needs four documents to cover all three areas, and most families benefit from a fifth.

Here’s what actually happens without an estate plan: Missouri’s intestate succession statutes (RSMo Chapter 474) decide who inherits your property. A probate judge — a stranger — decides who raises your children. And if you’re incapacitated, your family has to go to court, hire a lawyer, and petition for a conservatorship just to pay your mortgage. That process takes months and costs thousands of dollars. All of it is avoidable.

Every Missouri adult over 18 needs an estate plan. Not just wealthy people. Not just parents. Not just retirees. If you own a car, have a bank account, or would prefer not to have a court-appointed stranger making your medical decisions, you need a plan.

Estate planning isn’t a single event — it’s a system. The documents work together. A will without a power of attorney leaves a gap. A trust without proper funding is just an expensive piece of paper. The goal is a coordinated set of legal tools that cover death, incapacity, and everything in between.

I’ve written separately about why estate planning is an act of care for the people you love most. But on this page, we’re focused on the practical mechanics: what you need, why you need it, and what it costs in Missouri.

The Six Core Documents Every Missouri Estate Plan Needs

Every complete Missouri estate plan includes six documents: a last will and testament (RSMo §474.310), a revocable living trust (RSMo Chapter 456), a durable financial power of attorney (RSMo §404.700), a healthcare directive (RSMo §459.015), and a healthcare power of attorney (RSMo §404.800), and a HIPAA authorization. The most common mistake is creating a will but skipping the power of attorney — which means your family faces a court proceeding the moment you’re incapacitated.

Let me walk through each one.

1. Last Will and Testament

Your will names who gets property that doesn’t pass through other mechanisms (trusts, beneficiary designations, joint ownership). For parents, the will is the only place you can nominate a guardian for minor children. Under RSMo §474.310, Missouri requires your will to be in writing, signed by you, and witnessed by two competent adults. A self-proving affidavit (RSMo §474.337) means the witnesses don’t have to show up in court later to confirm they watched you sign.

If you have a trust, you’ll also need a “pour-over will” that catches anything you forgot to put in the trust and directs it there after death. More on making a will in Missouri and Missouri will requirements in dedicated guides.

2. Revocable Living Trust

A revocable living trust lets you transfer property into a trust during your lifetime, maintain full control as trustee, and pass it to beneficiaries without probate when you die. Under Missouri’s Uniform Trust Code (RSMo Chapter 456), you can amend or revoke the trust at any time. The trust also provides a seamless management plan if you become incapacitated — your successor trustee steps in without any court involvement.

Not everyone needs a trust. But if you own real estate, have minor children, or want to avoid probate entirely, a trust-based plan is the most effective approach. I cover this in depth in my guides on Missouri living trusts and how revocable living trusts work.

3. Durable Financial Power of Attorney

This document names someone to handle your finances if you can’t — paying bills, managing investments, filing taxes, selling property. Under RSMo §404.700, the word “durable” means it survives your incapacity. Without it, your family must petition a court for conservatorship. That’s a public proceeding, it costs thousands, and a judge decides who manages your money.

In practice, we see more families harmed by a missing power of attorney than by a missing will. You can learn more about Missouri durable power of attorney requirements.

4. Healthcare Directive

Missouri’s healthcare directive states your wishes about life-sustaining treatment (living will provisions under RSMo §459.015).

5. Healthcare Power of Attorney

Missouri’s healthcare power of attorney names someone to make medical decisions if you can’t (RSMo §404.800). This is the document that keeps your family out of court when you’re in the ICU. It tells doctors and your designated agent exactly what you want.

I cover this thoroughly in my guide on healthcare power of attorney in Missouri.

6. HIPAA Authorization

HIPAA is the federal law that prevents doctors and hospitals from sharing your medical information with anyone — including your spouse and your adult children. A HIPAA authorization names specific people who can access your medical records and talk to your doctors. Without it, your healthcare power of attorney agent may face roadblocks getting the information they need to make decisions for you.

This is the document people forget most often. It costs nothing extra to include, and it can prevent serious delays during a medical crisis.

Comparison: Six Core Documents at a Glance

Missouri Will Requirements: What Makes a Will Valid

In Missouri, the law requires four things to make a will valid: you must be at least 18 years old, you must be of sound mind, you must sign the will (or direct someone to sign for you in your presence), and two competent witnesses must sign in your presence. There are no exceptions to the two-witness rule outside the Electronic Wills Act. A will that fails any of these requirements is void — and your estate passes under intestate succession as if you had no plan at all.

Here’s what each requirement actually means in practice.

Age and capacity. You must be 18 or older (RSMo §474.310). “Sound mind” means you understand what property you own, who your natural beneficiaries are, and what a will does. A dementia diagnosis doesn’t automatically disqualify you — capacity is evaluated at the moment of signing.

Signature. You sign at the end of the will. If you physically can’t sign, you can direct someone to sign for you while you watch. Missouri does not require the will to be notarized to be valid, but a self-proving affidavit (RSMo §474.337) — which does require notarization — eliminates the need for witnesses to testify in court later. Every will I draft includes a self-proving affidavit. There’s no good reason to skip it.

Witnesses. Two witnesses must watch you sign (or acknowledge your signature) and then sign the will themselves. Witnesses should be competent adults who aren’t beneficiaries under the will. Missouri doesn’t void the will if a witness is also a beneficiary, but it creates grounds for a challenge you don’t want.

Electronic Wills. Missouri’s Electronic Wills Act allows for wills created and signed electronically with remote witnesses and a remote notary. The requirements are specific — the signing session must be recorded and the identity verification standards are strict. This option exists but isn’t common yet in practice.

Holographic (handwritten) wills. Missouri does not recognize holographic wills created in Missouri. A handwritten, unwitnessed will is not valid under Missouri law, period. If someone brings you a napkin with Uncle Jerry’s wishes on it, that napkin is worthless in Missouri probate court. I’ve written more about holographic wills in Missouri and the narrow exception for out-of-state holographic wills.

Bottom line: get it witnessed, get it notarized with a self-proving affidavit, and don’t rely on handwriting. For the full breakdown, read my guides on making a will in Missouri and Missouri will requirements.

Will or Trust — Which Does Your Missouri Family Need?

The most effective estate plan for most Missouri families is a revocable living trust paired with a pour-over will — not a standalone will. A will alone forces your family through probate. A trust avoids it entirely. If you own real estate, have minor children, have assets over $40,000, or value your family’s privacy, a trust-based plan is the winner. A standalone will is enough only if you’re single with minimal assets and no real estate.

Here’s the thing: this isn’t an either/or question. Every trust-based plan includes a will. The will catches assets you forgot to transfer to the trust and nominates guardians for minor children (something a trust cannot do). The real question is whether you need a trust in addition to a will.

When a will alone is enough: You’re a single adult under 40 with no children, no real estate, and total assets under $40,000. Your estate would qualify for Missouri’s small estate affidavit (RSMo §473.097), and the administrative simplicity of a will-only plan makes sense.

When you need a trust: You own a home. You have minor children and want to control when they receive their inheritance. You value privacy. You own property in more than one state. You want your family to avoid spending months in probate court. In other words — most families.

Let me be direct: the upfront cost difference between a will and a trust is $1,000 to $2,500. The probate cost your family avoids by having a trust is typically $5,000 to $50,000 or more. That math is not close. For the deeper dive, see my guide on will or trust.

How Revocable Living Trusts Work in Missouri

A revocable living trust is a legal entity you create during your lifetime under RSMo Chapter 456 (Missouri’s Uniform Trust Code). You transfer your property into the trust, you serve as trustee with full control, and you name a successor trustee who takes over if you die or become incapacitated. The trust avoids probate because legally, “you” don’t own the property anymore — the trust does. And trusts don’t die, so there’s nothing to probate.

Here’s how it works in practice. You sign a trust document. Then you “fund” the trust — that means re-titling your house, bank accounts, and investment accounts in the name of the trust. You also update beneficiary designations on life insurance and retirement accounts to coordinate with the trust. You continue using everything normally. Nothing changes day-to-day. You can buy and sell property, close and open accounts, and amend or revoke the trust entirely whenever you want.

The most common mistake with Missouri trusts is failing to fund them. I see this constantly. Someone pays an attorney to draft a beautiful trust document, then never transfers their house into it. When they die, the house isn’t in the trust — so it goes through probate anyway. The trust was useless. Funding is not optional. It’s the entire point.

The pour-over will. Every trust-based plan includes a pour-over will. This is a safety net: it says “anything I forgot to put in the trust goes to the trust when I die.” The property still goes through probate, but it ends up in the trust where your distribution plan controls what happens next.

Successor trustee. Your successor trustee is the person who steps in when you can’t serve. This is one of the most important decisions in your estate plan. They manage the trust assets, distribute property to beneficiaries, pay debts and taxes, and handle the administrative wind-down. Choose someone you trust completely — competence matters more than family ties. I discuss this choice in detail in my guide on how to change a successor trustee.

Taxes. A revocable living trust doesn’t save you any income taxes during your lifetime. It’s a “grantor trust” for tax purposes — the IRS treats it as if you still own everything. You use your own Social Security number. You don’t file a separate tax return. The tax benefits of a trust are limited to estate tax planning for very large estates (over $13.99 million in 2026), and most Missouri families don’t need to worry about that.

For the full breakdown, read my guides on Missouri living trusts, how revocable living trusts work in Missouri, and the real price of a trust.

Power of Attorney in Missouri: Financial and Healthcare

In practice, we see more families harmed by missing a power of attorney than by missing a will. A will matters when you die. A power of attorney matters when you’re alive but can’t act for yourself — after a stroke, during surgery, in a car accident, or as dementia progresses. Without one, your family goes to court. Missouri requires two types of POA for complete protection: a durable financial power of attorney (RSMo §404.700) and a healthcare power of attorney (RSMo §459.015).

Durable Financial Power of Attorney

This document authorizes your agent to manage your financial life: pay bills, access bank accounts, manage investments, file taxes, sell property, and handle insurance claims. Under RSMo §404.700, the key word is “durable” — it means the power of attorney remains effective even after you become incapacitated. A non-durable power of attorney terminates when you lose capacity, which is exactly when you need it most.

You can make your financial POA effective immediately (your agent can act now, alongside you) or “springing” (it only activates when a physician certifies you’re incapacitated). I generally recommend immediate effectiveness with a trusted agent. Springing powers can cause delays — banks sometimes resist them, and getting the physician certification adds time during a crisis when speed matters.

Missouri allows you to customize the powers granted. You can authorize broad powers covering everything, or you can limit your agent to specific transactions. You can require accounting to a third party. You can name successor agents in case your first choice can’t serve.

For more detail, see my guides on Missouri durable power of attorney and durable power of attorney for seniors.

Healthcare Power of Attorney & Advance Directive

Your healthcare directive under RSMo §459.015 states your wishes about life-sustaining treatment, artificial nutrition and hydration, and other end-of-life decisions.

Your health care power of attorney names your healthcare agent — the person who makes medical decisions when you can’t.

This is the document that prevents family disputes in the hospital hallway. Without it, Missouri law provides a default hierarchy for who makes your medical decisions, but that hierarchy doesn’t account for family disagreements. I’ve seen siblings fight about a parent’s care for months while the parent lies in a hospital bed. A clear healthcare directive prevents that.

Your healthcare agent should be someone who will follow your wishes, even when it’s emotionally difficult. That’s not always the same person who’s best with finances. Many of my clients name different people for financial and healthcare powers of attorney, and that’s perfectly fine.

Read the full guide on healthcare power of attorney in Missouri.

How to Avoid Probate in Missouri

The fastest path to avoiding probate is a trust-based estate plan with coordinated beneficiary designations. That’s the winner. Other tools — transfer-on-death deeds, payable-on-death accounts, joint ownership — can each handle individual assets, but only a trust provides a comprehensive, coordinated plan that covers everything. If you want to avoid probate completely, a trust is the most effective method.

Here’s why probate matters: Missouri probate typically takes 6 to 18 months. It’s a public proceeding — anyone can look up your assets, your debts, and who inherited what. Attorney fees and personal representative fees can consume 3–5% of the estate’s value. For a $400,000 estate (a house plus some savings), that’s $12,000 to $20,000 in fees. And during probate, your family needs court permission to do basic things like sell the house.

Here are the probate-avoidance tools available in Missouri:

1. Revocable Living Trust

The most comprehensive option. Assets titled in the trust’s name pass to beneficiaries according to the trust terms without court involvement. Handles real estate, bank accounts, investment accounts, and personal property. The successor trustee manages distribution. Read my full guide on how to avoid probate in Missouri.

2. Beneficiary Deed (Transfer-on-Death Deed)

Under RSMo §461.025, you can record a beneficiary deed that transfers real estate to a named beneficiary at your death. No probate. The beneficiary has no interest in the property until you die, so you keep full control. You can revoke it at any time. This is a good tool for a single property, but it doesn’t handle your bank accounts, vehicles, or personal property. Learn more about transfer-on-death deeds in Missouri and beneficiary deeds in Missouri.

3. Payable-on-Death (POD) and Transfer-on-Death (TOD) Accounts

Most banks and brokerage firms let you name a beneficiary directly on the account. When you die, the beneficiary presents a death certificate and claims the funds. No probate. This works well for individual accounts but doesn’t coordinate with your overall plan — and it gives the beneficiary the entire balance as a lump sum with no conditions or protections.

4. Joint Ownership with Right of Survivorship

Property owned as joint tenants passes automatically to the surviving owner. This works for spouses but creates problems for everyone else. Adding a child to your deed means they own half your house right now — exposing it to their creditors, their divorce, and their lawsuits. I don’t recommend this approach outside of spousal joint ownership.

5. Small Estate Affidavit

Under RSMo §473.097, if the total probate estate is $40,000 or less (not counting real estate, joint accounts, and beneficiary designations), your heirs can collect property with a small estate affidavit instead of opening a full probate case. This isn’t probate avoidance so much as simplified probate — but for qualifying estates, it works. See small estate affidavits in Missouri for details.

6. Lady Bird Deed (Enhanced Life Estate Deed)

Missouri recognizes enhanced life estate deeds. You keep full control of the property during your life — including the right to sell or mortgage it — and it passes to your named beneficiary at death without probate. This is similar to a beneficiary deed but structured differently for Medicaid planning purposes.

For a county-specific perspective, see avoiding probate in Adair County.

What Happens If You Die Without an Estate Plan in Missouri?

Missouri courts regularly appoint guardians the family didn’t want because no one filed a nomination. If you die without a will (intestate), RSMo Chapter 474 dictates who gets your property — and the results often don’t match what you would have chosen. Your spouse doesn’t automatically get everything. Your children may inherit property they’re too young to manage. And a probate judge decides who raises your kids.

Here’s what actually happens under Missouri’s intestate succession rules:

If you’re married with children who are also your spouse’s children: Your spouse inherits the first $20,000 plus half of the remaining estate. Your children split the other half. That means if your estate is worth $200,000, your spouse gets $110,000 and your children split $90,000. If those children are minors, the court appoints a conservator to manage their share.

If you’re married with children from a prior relationship: Your spouse gets the first $20,000 plus one-third of the remaining estate. Your children split two-thirds. Your spouse may need to sell the family home to pay out the children’s share.

If you’re married with no children: Your spouse gets the first $20,000 plus half of the remaining estate. Your parents get the other half. If your parents are deceased, it goes to your siblings. Your spouse does not automatically inherit everything.

If you’re single with no children: Your parents inherit everything. If they’re deceased, your siblings split it equally. If no siblings, it goes to more distant relatives.

If you’re unmarried with a partner: Your partner gets nothing. Missouri does not recognize common-law marriage formed in Missouri. Your property goes to your children, parents, or siblings — your partner is invisible under intestate succession.

The Guardian Problem

If both parents die without a will, no one has been nominated as guardian for the minor children. The probate court holds a hearing and appoints someone. Family members can petition, but so can anyone else. The judge decides based on “best interest of the child” — a standard that gives them enormous discretion. I’ve seen cases where the court’s choice shocked the family. Your will is the only way to influence that decision.

Read more about Missouri intestate succession and Missouri inheritance laws.

How Much Does Estate Planning Cost in Missouri?

The most expensive estate plan is the one you never make. A complete estate plan from a Missouri attorney typically costs $1,500 to $4,500 as a flat fee. Probate — the process your family goes through without a plan or with a will-only plan — costs 3–5% of your estate’s value, takes 6 to 18 months, and creates stress your family doesn’t need during an already difficult time.

Here’s what drives the cost at Nolan Law Firm:

What “flat fee” means: You know the total cost before we start. No hourly billing, no surprise invoices, no charges for phone calls or questions. The fee covers drafting, revisions, a signing meeting, and trust funding guidance. At Nolan Law Firm, I don’t charge extra when you ask questions — I actually want you to understand your plan.

What drives cost up: Business ownership, blended families, special needs beneficiaries, real estate in multiple states, or Medicaid planning components. These situations require additional documents and more complex drafting. But you’ll know the fee before we begin.

The real comparison: A $3,500 trust-based plan versus $15,000+ in probate costs and 12 months of delay. For a family with a $300,000 home and $100,000 in other assets, probate could easily cost $12,000 to $20,000 in attorney fees and personal representative commissions. That doesn’t count the value of your family’s time, privacy, and peace of mind.

Learn more on my dedicated page about what an estate plan costs in Missouri.

Estate Planning for Missouri Parents with Minor Children

In Missouri, the law requires a court proceeding to appoint a guardian for minor children — your will is the only way to influence that decision. If both parents die without a guardian nomination, a probate judge chooses who raises your kids. That’s not a hypothetical. It happens. And the court’s choice may not be your choice. At minimum, every Missouri parent needs a will with a guardian nomination (RSMo §475.030), a trust with provisions for minor children, and coordinated life insurance beneficiary designations.

Here’s what I tell every parent who sits across my desk:

Guardian Nomination

Your will is where you nominate a guardian for your minor children under RSMo §475.030. The court isn’t technically bound by your nomination, but in practice, judges follow it unless there’s a serious problem with the nominee. You should also name an alternate guardian in case your first choice can’t serve. And both parents should nominate the same person — conflicting nominations create litigation.

Inheritance Protection: Trust vs. UTMA

If you leave money to a minor child outright, Missouri requires a conservator to manage it until the child turns 18. Then the child gets the entire amount with no restrictions. An 18-year-old with a $200,000 inheritance and no conditions is a recipe for trouble.

You have two options: a testamentary trust (created inside your will or living trust) or a transfer under the Missouri Uniform Transfers to Minors Act (UTMA). The winner is a trust, and it’s not close.

A testamentary trust lets you set conditions: distributions for education, health, and support at the trustee’s discretion, with staged lump sums at ages you choose (25, 30, 35 is common). A UTMA custodianship terminates at 21, and the child gets everything. A trust gives you control far beyond age 21 and includes spendthrift protection that shields the inheritance from your child’s creditors, divorcing spouse, or lawsuits.

I’ve written about this in detail: estate planning with young kids and what happens to a child’s inheritance without a trust.

Life Insurance Coordination

Most parents with minor children need life insurance. The mistake is naming your minor child as the beneficiary directly. A minor can’t receive insurance proceeds — the insurance company won’t cut a check to a 10-year-old. Instead, name your trust as the beneficiary. The trustee receives the funds and manages them according to your trust terms. This keeps the money out of a court-supervised conservatorship and gives you control over how it’s spent.

Estate Planning for Blended Families

The most common mistake in blended family planning is assuming your spouse will “do the right thing” for your children from a prior relationship. Here’s what actually happens under Missouri’s default rules: if you die without a plan, your surviving spouse inherits a significant portion of your estate. There is no legal obligation for your spouse to leave anything to your children. Your kids from a prior relationship may inherit nothing.

Blended families need more than a basic estate plan. Missouri’s intestate succession statutes (RSMo §474.010) create a default distribution that almost never matches what blended families actually want. If you have children from a prior relationship and a current spouse, you need a plan that protects both.

The QTIP trust solution. A Qualified Terminable Interest Property (QTIP) trust lets you provide for your surviving spouse during their lifetime while preserving the remainder for your children. Your spouse receives income from the trust (and can receive principal at the trustee’s discretion), but when your spouse dies, the remaining trust assets pass to the beneficiaries you chose — your children. Your spouse cannot redirect those assets to their own children or a new partner.

Other blended family tools:

• Separate trusts instead of a joint trust, so each spouse controls their own assets
• Life insurance owned by an irrevocable trust to provide for children outside the marital estate
• Prenuptial or postnuptial agreements that coordinate with the estate plan
• Specific bequests of family heirlooms or property you want to stay in your bloodline

Let me be direct: blended family estate planning is more complex than planning for a first marriage. The documents need to be more detailed, the funding needs to be more precise, and the conversations are harder. But the alternative — leaving it to Missouri’s default rules and hoping for the best — is how families get torn apart. Read my full guide on estate planning for blended families.

Missouri Medicaid and Long-Term Care

In practice, we see families lose hundreds of thousands of dollars because they started Medicaid planning too late. Missouri Medicaid (MO HealthNet) pays for long-term nursing home care, but only after you’ve spent down nearly all of your assets. The income limit and asset limit are strict, and Missouri enforces a five-year look-back period on asset transfers. Estate planning and Medicaid planning overlap significantly, and the earlier you start, the more options you have.

Here’s the connection to your estate plan: a standard revocable living trust does not protect assets from Medicaid. Because you can revoke it and access the assets, Medicaid counts them as yours. Medicaid asset protection requires irrevocable trust structures, and those must be established at least five years before you need Medicaid benefits. Transfers made within the five-year look-back window trigger a penalty period during which Medicaid won’t pay for your care.

The average cost of nursing home care in Missouri is over $6,000 per month. A two-year stay can consume $150,000 or more. Without planning, your family home, your savings, and most of your assets go to the nursing home before Medicaid starts paying.

What to do now: If you’re over 60 or have parents over 60, include long-term care considerations in your estate plan. At minimum, ensure your power of attorney is broad enough to allow Medicaid planning by your agent. Consider whether long-term care insurance makes sense. And if Medicaid planning is a priority, the five-year clock means the time to start is now — not when you get the diagnosis.

I cover this topic comprehensively in my elder law in Missouri hub page. If Medicaid planning is your primary concern, start there.

Estate Planning for Business Owners

The fastest way to kill a Missouri business is to let an estate plan and an operating agreement contradict each other. If your LLC operating agreement says members can’t transfer their interest without a vote, but your trust says your spouse inherits your interest — you’ve created a legal conflict that could paralyze the business and end up in court. Business owners need estate plans that coordinate with their business documents, not fight against them.

Here’s what business owner estate planning actually requires:

• Operating agreement review. Your LLC operating agreement, corporate bylaws, or partnership agreement must allow transfer to your trust or estate plan. If it restricts transfers, you need to amend it first.
• Buy-sell agreement. This controls what happens to your business interest when you die, become disabled, or retire. It should coordinate with your estate plan and your life insurance.
• Business succession plan. Who runs the business if you die tomorrow? Is that person your successor trustee? Should they be? These are different roles that may require different people.
• Key person insurance. If the business depends on you, life insurance funded by the business can provide working capital and transition funds.
• Valuation. Your business needs a valuation method specified in your buy-sell agreement. Otherwise, your family and your business partners will fight about what it’s worth — in court.

Bottom line: if you own a Missouri business, your estate plan and your business documents must be reviewed together. I never draft a business owner’s estate plan without reading the operating agreement first. A plan that works for an employee won’t work for someone who owns an LLC, a professional practice, or a farm operation.

When Your Child Turns 18 in Missouri

The day your child turns 18, you lose all legal authority to make decisions for them. You can’t access their medical records. You can’t talk to their doctors. You can’t manage their bank account. You can’t make a single financial or medical decision on their behalf — even if they’re living in your house and you’re paying every bill. Missouri law treats them as a full adult the moment they turn 18, period.

This catches families off guard every year, especially when their 18-year-old heads off to college. If your child has a medical emergency at school, you can’t get information from the hospital without a HIPAA authorization. You can’t consent to treatment without a healthcare power of attorney.

At minimum, every 18-year-old in Missouri needs five documents:

1. Healthcare power of attorney — naming a parent as their healthcare agent
2. HIPAA authorization — allowing parents to access medical records
3. Durable financial power of attorney — allowing a parent to handle financial matters if needed
4. FERPA waiver — allowing parents to access college records
5. A basic will — especially if they have any assets (car, savings account, digital assets)

This is one of the most overlooked areas of estate planning in Missouri. I’ve written an entire guide on this topic: when your child turns 18 in Missouri.

When to Update Your Estate Plan

The most dangerous estate plan is the one you made 15 years ago and never looked at again. Missouri law changes. Your family changes. Your assets change. An outdated estate plan can be worse than no plan at all — because you think you’re protected when you’re not. At minimum, review your estate plan every 3 to 5 years, and review it immediately after any major life event.

Here are the trigger events that mean it’s time to update:

• Marriage or divorce. Missouri does automatically revoke provisions for a former spouse in your will upon divorce (RSMo §474.420), but your trust, beneficiary designations, and POA documents may still name them. Divorce requires a full review.
• Birth or adoption of a child. You need to add the child to your plan, nominate guardians, and update trust provisions.
• Death of a named person. If your executor, trustee, guardian, or agent dies, you need to update those designations immediately.
• Significant change in assets. Bought or sold a house, received an inheritance, started a business, sold a business — any of these can require changes to your trust funding, distribution plan, or tax planning.
• Move to or from Missouri. Estate planning laws vary dramatically by state. A plan drafted in California may not work in Missouri, and vice versa. If you’ve moved to Missouri, have a Missouri attorney review your plan.
• Change in relationships. Family falling-outs, new relationships, changes in who you trust — these all affect your choice of agents, trustees, and beneficiaries.
• Change in health. A serious diagnosis may change your priorities and your planning needs, particularly around long-term care and Medicaid.
• Change in law. Estate tax exemptions, trust laws, and Medicaid rules change. Your plan should account for current law, not the law from when it was drafted.

Missouri-specific trigger: if you created your plan before Missouri adopted the Uniform Trust Code (RSMo Chapter 456, effective January 1, 2005) or before Missouri authorized beneficiary deeds (RSMo §461.025), your plan may not take advantage of tools that weren’t available when it was drafted.

I’ve written more about this topic in when life shifts: why your estate plan needs to keep up.

What’s New in Missouri Estate Planning

Missouri estate planning law continues to evolve. The Electronic Wills Act has expanded options for remote estate plan execution. The federal estate tax exemption for 2026 is $13.99 million per person ($27.98 million per married couple), but this is the year the exemption is scheduled to sunset under the Tax Cuts and Jobs Act — which could cut the exemption roughly in half starting in 2027. If you have a taxable estate, 2026 is the year to act.

Missouri also does not impose a separate state estate tax or inheritance tax, which continues to make it a favorable state for estate planning compared to neighbors like Illinois.

For the latest developments, read my companion guide: Missouri estate planning in 2026.

Frequently Asked Questions

Do I need a lawyer for estate planning in Missouri?

You’re not legally required to hire a lawyer to create a will in Missouri. But here’s the thing: estate planning documents are legal instruments that must comply with specific statutory requirements (RSMo §474.310 for wills, RSMo §404.700 for powers of attorney). A mistake in drafting can void the document entirely, and you won’t be around to fix it. The cost of a properly drafted plan is a fraction of the cost of fixing — or litigating — a flawed one. For anything beyond the simplest situation, an attorney is worth the investment.

How often should I update my estate plan?

Review your estate plan every 3 to 5 years and immediately after any major life event: marriage, divorce, birth, death of a named person, significant asset change, or a move to a new state. An outdated plan can be worse than no plan. At Nolan Law Firm, I include a review checklist with every plan and encourage clients to schedule periodic reviews. The most common problem I see is a plan drafted 10 years ago that names a now-ex-spouse as the primary beneficiary.

Can I write my own will in Missouri?

You can draft your own will, but Missouri does not recognize holographic (handwritten, unwitnessed) wills created in Missouri. Your will must be signed by you and witnessed by two competent adults (RSMo §474.310). DIY wills from online services are technically valid if they meet these requirements, but they frequently fail in practice — missing self-proving affidavits, improper witness procedures, and vague language that creates ambiguity. A contested will costs far more to litigate than a properly drafted will costs to create.

What is the difference between a will and a trust in Missouri?

A will takes effect only at death and must go through probate court. A revocable living trust takes effect immediately, operates during your life and after death, and avoids probate entirely for assets held in the trust. A trust also provides incapacity protection — your successor trustee manages assets if you can’t. A will does not help during incapacity. Most families with real estate or minor children benefit from a trust-based plan. See my detailed will or trust comparison.

How long does probate take in Missouri?

Missouri probate typically takes 6 to 18 months, depending on estate complexity, whether the will is contested, and the court’s docket. The statutory minimum is about 6 months due to the creditor notice period (RSMo §473.360). Complex estates with real property, business interests, or disputes can take 2 years or more. During probate, the personal representative must inventory assets, notify creditors, pay debts, file tax returns, and distribute remaining assets under court supervision. A trust-based plan avoids this entire process.

What happens to my house if I die without a will in Missouri?

Under Missouri intestate succession (RSMo §474.010), your house passes to your heirs based on a statutory formula. If you’re married with children, your spouse doesn’t automatically get the whole house — they get the first $20,000 plus a percentage of the remainder, and your children inherit the rest. This often forces a sale of the house to divide the proceeds. A beneficiary deed (RSMo §461.025), a living trust, or even a basic will can prevent this outcome. Don’t leave it to the default rules.

How much does a living trust cost in Missouri?

A revocable living trust from a Missouri attorney typically costs $2,500 to $4,500 as part of a complete estate plan (trust, pour-over will, powers of attorney, healthcare directive, HIPAA authorization, and funding guidance). At Nolan Law Firm, this is always a flat fee — no hourly billing. The cost varies based on complexity: blended families, business ownership, and special needs beneficiaries cost more. Compare that to probate costs of $12,000 to $20,000+ on a $400,000 estate, and the trust pays for itself.

Does a power of attorney expire in Missouri?

A durable power of attorney in Missouri (RSMo §404.700) does not expire as long as you’re alive. It remains effective until you revoke it, the agent resigns, or you die. Upon death, the power of attorney terminates immediately — your agent has no authority after that point. This is why you need both a power of attorney (for incapacity during life) and a trust or will (for after death). A non-durable power of attorney terminates when you become incapacitated, which makes it essentially useless for estate planning purposes.

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