Complete Guide to Successor Trustees in Missouri

When you create a revocable living trust as part of your estate plan, one of the most important decisions you will make is choosing your successor trustee — the person or entity who will step in to manage the trust when you no longer can. Whether due to incapacity or death, your successor trustee will have significant authority over your financial affairs, so it is critical to understand the role, choose wisely, and separate fact from fiction.

What Does a Successor Trustee Do?

A successor trustee takes over the management of your trust under two circumstances: if you become incapacitated during your lifetime, or after your death.

During Incapacity

If you become unable to manage your own financial affairs — due to illness, injury, or cognitive decline — your successor trustee steps into your shoes and takes full control of the trust's accounts and property on your behalf. This includes the authority to:

• Pay your bills and living expenses
• Manage investments and real estate
• Make financial decisions in your best interest
• Sell or refinance trust property if necessary

This is one of the key advantages of a living trust over a will alone. Without a trust (or a properly executed financial power of attorney), your family might need to go through an expensive and time-consuming court guardianship or conservatorship proceeding to gain authority over your finances.

After Your Death

After you pass away, your successor trustee acts much like an executor would in probate — but without court supervision. Their responsibilities include:

• Taking inventory of all trust accounts and property
• Notifying beneficiaries of the trust's terms and their rights
• Paying outstanding debts and taxes, including preparing your final tax return
• Managing trust assets during the administration period
• Distributing assets to beneficiaries according to your trust instructions
• Keeping accurate records and providing accountings to beneficiaries

Because a living trust avoids probate, this process is typically faster, less expensive, and completely private compared to a court-supervised estate administration.

How to Choose the Right Successor Trustee

Your successor trustee can be a spouse, adult child, other family member, trusted friend, bank, trust company, or professional fiduciary. Here are the key factors to consider:

Character and Judgment

Above all, your successor trustee should be someone you trust — someone whose judgment you respect and who will carry out your wishes faithfully, even when it is difficult. Administering a trust can involve tough decisions, family dynamics, and complex financial matters.

Willingness and Availability

Being a trustee is a significant commitment. It requires time, attention to detail, and the ability to manage financial affairs competently. Always ask someone before naming them as your successor trustee. Do not assume they will accept the role.

Financial Competence

Your trustee does not need to be a financial expert, but they should have a reasonable level of business sense and be comfortable working with attorneys, accountants, and financial advisors. The good news is that a trustee can — and should — hire professionals to help with complex tasks, and those costs are paid by the trust.

Naming Alternates

If you choose an individual (rather than a corporate trustee), always name at least one or two alternate successor trustees. Life circumstances change, and your first choice may be unable or unwilling to serve when the time comes.

Consider the Complexity of Your Estate

The more complex your trust, the more important it is to select someone with the skills to handle it — or to consider a corporate trustee. If your trust holds business interests, investment real estate, or provides for beneficiaries with special needs, the administration will demand more expertise.

Individual vs. Corporate Trustees

One of the most consequential decisions is whether to name an individual or a corporate (institutional) trustee.

Individual trustees — such as a family member or friend — offer the advantage of personal knowledge of your family and values. They often serve at lower cost, and the relationship can make communication with beneficiaries smoother. However, individuals may lack investment expertise, can be subject to family pressure, and their availability is not guaranteed.

Corporate trustees — such as a bank trust department or professional fiduciary firm — bring institutional expertise, continuity, and impartiality. They are well-suited for complex trusts, trusts that will last for many years (such as those for minor children), or situations where family conflict makes an independent trustee desirable. The tradeoff is higher fees and a less personal relationship.

Some families choose a co-trustee arrangement, naming a family member alongside a corporate trustee to combine personal knowledge with professional management. For more on this decision, see our guide on whether a corporate trustee is right for you.

Common Myths About Successor Trustees

Myth: A Family Member Cannot Be Compensated

False. The relationship between the trust creator and the successor trustee has no bearing on compensation. Whether a trustee is entitled to payment depends first on the trust document itself. Many trusts include provisions for reasonable trustee compensation. If the trust is silent, Missouri law provides that a trustee is entitled to reasonable compensation for services rendered.

Myth: The Successor Trustee Can Do Whatever They Want

False. While the successor trustee has broad authority, that authority is not unlimited. A trustee is a fiduciary, which means they are held to a higher legal standard of care. Specifically, the trustee must:

• Act solely in the best interest of the beneficiaries
• Avoid conflicts of interest and self-dealing (unless the trust explicitly permits it)
• Follow the instructions laid out in the trust document
• Manage trust assets prudently

A trustee who breaches these duties can be removed by the court and held personally liable for damages. Beneficiaries have the right to demand accountings and challenge actions that appear improper.

Myth: The Successor Trustee Controls All of Your Assets

False. A successor trustee only has authority over assets that are actually owned by the trust. If you have accounts or property in your individual name that were never transferred into the trust, the trustee has no control over those assets. Individually owned assets may need to go through probate, be managed by an agent under a power of attorney, or transfer via beneficiary designation.

This is why funding your trust — the process of retitling assets into the trust's name — is so important. An unfunded or partially funded trust leaves gaps in your plan.

Myth: The Trustee Must Handle Everything Alone

False. A successor trustee is expected to seek professional help when needed. The trust can pay for attorneys, accountants, financial advisors, and other professionals who assist with administration. The key is that the trustee must act reasonably when hiring help and ensure expenses are properly documented and in the trust's best interest.

Setting Your Successor Trustee Up for Success

Choosing the right person is only the beginning. Here are practical steps to make the transition smoother:

1. Tell your successor trustee they have been named. Share where the trust document is located and introduce them to your attorney and financial advisor.
2. Keep your trust funded. Regularly review asset titles and beneficiary designations to make sure new acquisitions are properly aligned with the trust.
3. Maintain organized records. A clear summary of your accounts, property, debts, and advisors will save your trustee significant time and effort.
4. Review and update periodically. Life changes — marriages, divorces, births, deaths, moves — should trigger a review of your trust and trustee designations.

Get the Right Plan in Place

If you are exploring trusts as part of a broader probate-avoidance strategy, our Missouri Probate Learning Library covers how trusts, beneficiary deeds, and other tools work together to protect your family.

Your choice of successor trustee is one of the most important parts of your estate plan. The right person — supported by a well-drafted trust and proper funding — can save your family from the cost, delay, and stress of court proceedings.

If you are creating or updating a living trust in Missouri, contact Schnurbusch Law to discuss your options. We help families throughout the St. Louis and St. Charles area build estate plans that work when they are needed most.