Wills in the US — state law, probate, and what a will can't do

A will is a legally binding document that names who inherits your property and, crucially for immigrant parents, who will care for your minor children if you die. But many newcomers to the US assume a will handles everything—when in reality, beneficiary forms on financial accounts override the will, and state law can distribute assets in ways foreign families don't expect. Understanding what a will can and cannot do is essential, especially if you have children or family abroad.

Wills and Probate Are Governed by State Law

The United States has no single national probate or will law. Instead, each state sets its own rules for how wills must be signed, witnessed, and validated. What works in California may not be valid in New York. This means you need to check the requirements in the state where you live or where you own property. Some key areas that vary:

• How many witnesses are required and who can serve as a witness
• Whether a will must be notarized (most states do not require this, but Louisiana is an exception)
• Spousal inheritance rights and elective shares (what a surviving spouse is entitled to claim regardless of what the will says)
• Probate timelines and fees, which differ significantly between states

Witness Requirements

Most US states require at least two adult witnesses to your will. The witnesses must be 'disinterested,' meaning they cannot be beneficiaries under the will and should not be family members who stand to inherit. When you sign your will in front of witnesses, they are confirming that you appear of sound mind and are not being pressured to make the document. If a will is not properly witnessed, a probate court may reject it as invalid, and your estate will be distributed under your state's intestacy laws instead. About half of US states do accept handwritten (holographic) wills without witnesses, but these are easily contested and should be used only in emergencies. Notarization is not a substitute for witnesses in most states; Colorado and North Dakota are the only states that allow will-makers to be notarized instead of witnessed. If you have a will, always ask your witnesses if they are willing to testify in probate court after your death if needed—ideally, choose people who are likely to outlive you.

Spousal and Intestacy Rights

If you die without a will, your state's intestacy law creates a legal formula for who inherits. The formula typically prioritizes spouses and children, then moves to parents, siblings, and more distant relatives. However, the exact share each person receives varies significantly by state. Community property states (such as California, Texas, and Arizona) treat property acquired during marriage differently from separate property states. Some states give a surviving spouse everything; others divide the estate among spouse and children; still others require the spouse to share with parents. If you have relatives abroad or a family structure that does not match your state's default rules, a will is the only way to control who actually receives your assets. Without one, the probate court will follow a rigid formula that may leave nothing to the people you most want to provide for.

Beneficiary Forms Override Your Will

This is the single most important fact that surprises families: a will does not control retirement accounts, life insurance policies, bank accounts with payable-on-death (POD) designations, or annuities. These assets pass directly to whoever is named on the beneficiary form, completely bypassing your will and the probate process. Beneficiary forms are contracts—the financial institution is legally bound to pay the named beneficiary upon your death, regardless of what your will says.

Which Assets Go Through Beneficiary Forms

• 401(k), 403(b), and IRA retirement accounts
• Life insurance policies (employer-provided or individual)
• Annuities
• Bank and brokerage accounts with payable-on-death (POD) or transfer-on-death (TOD) designations
• Certain vehicle titles with TOD designations (varies by state)

Assets That Do Pass Through Your Will

Your will controls the distribution of property you own solely in your name—real estate, vehicles, bank accounts without POD designations, personal possessions—and joint property in some cases. If you have a valuable home or significant savings in an account that doesn't have a named beneficiary, your will is essential. Without one, probate court will distribute these assets according to state intestacy law, and the process can be slow and expensive.

Naming a Guardian for Minor Children

If you have children under the age of 18, naming a guardian in your will is the single strongest reason to create one. This is critical for immigrant families who may have relatives abroad and want to ensure their children remain in a specific country or stay with a chosen caregiver rather than being placed in the foster system. If both parents die or become incapacitated and no guardian has been named in a will, a court must appoint one based on what the judge believes is in the child's best interest. The judge may or may not know your family's wishes, and may not appoint the person you would have chosen. Your will allows you to make your preference clear, and courts give high priority to a parent's named guardian.

Who Can Be a Guardian

A guardian does not have to be a relative. You can name a trusted friend, a grandparent, an uncle, an aunt, or any adult you believe is legally capable and willing to care for your children. The role includes making decisions about where the children live, which school they attend, their healthcare, and managing their property until they turn 18. Before naming someone as guardian in your will, have a frank conversation with that person—they must be willing to accept the responsibility, and it is legally their right to decline the role. Many parents name an alternate or backup guardian in case their first choice is unable or unwilling to serve when the time comes. Some families also name separate guardians for different children if circumstances warrant.

How the Guardian Process Works

When you name a guardian in your will, you are making a recommendation to the court. In most cases, the court will honor your choice unless there is compelling evidence that your named guardian is unfit or unable to care for the child. If one biological parent survives your death and has not lost parental rights, that surviving parent will typically become the child's guardian automatically. However, if both parents die or are incapacitated, or if one parent explicitly states in the will that the other parent should not be guardian, the court will consider your named choice. Once someone is named guardian and the will enters probate, that person steps into the role, though they must be formally appointed by the court within a few months. Some states allow children age 14 and older to have input in the guardianship decision.

Noncitizen Spouses and International Inheritance

Noncitizens, including those on student visas, green cards, or temporary visas, can inherit property and can be named as beneficiaries in a will. There is no restriction on which citizenship or immigration status a beneficiary holds. However, if you are a US citizen married to a noncitizen spouse (or vice versa), special federal estate tax rules apply for larger estates. These rules are complex and worth professional advice if your estate exceeds $60,000 to $15 million depending on immigration status.

Estate Tax for Noncitizen Spouses

US citizens married to each other receive an unlimited marital deduction—meaning they can leave any amount to a spouse free of federal estate tax. Noncitizen spouses do not automatically receive this same benefit. When a US citizen leaves assets directly to a noncitizen spouse, those assets may be subject to federal estate tax. For larger estates, there is a strategy called a 'qualified domestic trust' (or QDOT) that can avoid or defer this tax. In a QDOT, you leave property to the trust rather than directly to your noncitizen spouse; the spouse receives income from the trust and can withdraw principal for health, education, and living expenses, and estate tax is deferred until the spouse dies or receives principal distributions. Setting up a QDOT requires working with an estate attorney and involves specific legal requirements, such as having a US citizen or US bank serve as trustee. For smaller estates, the QDOT may not be necessary, but it is worth discussing with a professional if your estate is substantial.

Heirs and Property Abroad

You can leave US property to anyone, regardless of where they live or which country they are a citizen of. However, if you also own property outside the United States—such as real estate or bank accounts in your home country—inheritance rules for that property are determined by the laws of that country, not US law. Some countries do not recognize a US will as valid for property within their borders. In such cases, you may need to create a separate will in that country, following its legal requirements. Consult an attorney licensed in both the US and the foreign country if you have significant assets abroad. Additionally, heirs abroad may face tax implications in their home country when inheriting US property, and may face difficulties accessing accounts or transferring funds internationally. Discussing these complexities with an estate planning attorney and a tax professional is advisable.

What a Will Cannot Do

A will is powerful but has limits. It cannot:

• Override beneficiary forms on retirement accounts, life insurance, or payable-on-death accounts. Those forms always take precedence.
• Direct the distribution of joint property that has a right of survivorship. That property passes automatically to the surviving co-owner outside of the will.
• Protect assets from creditors' claims after your death. Your estate may owe debts, taxes, or claims that must be paid before beneficiaries receive their inheritance.
• Reduce federal estate taxes for large estates. A will alone cannot protect high-net-worth estates; you may need a trust or other planning tools.
• Make healthcare or end-of-life decisions after you die. For that, you need a separate healthcare power of attorney and advance directive.
• Provide financial oversight for minor children. A guardian cares for the child but someone else (the executor) must manage money left to minors, often through a conservatorship or trust.

Getting Your Will Done

You have several options for creating a will. Many people use online will-making services or do-it-yourself templates that are inexpensive and straightforward for simple estates. However, if your situation is complex—multiple states, minor children, noncitizen spouse, substantial assets, blended family, or property abroad—working with an estate attorney is wise. An attorney can ensure your will meets your state's legal requirements, coordinate it with beneficiary forms, and spot planning issues you might miss. Whether you use an online service or an attorney, always remember to have the will properly witnessed according to your state's law, keep it in a safe place (like a safe deposit box or fireproof home safe), and tell your executor or a trusted family member where to find it after you die. Most importantly: do not assume your will is finished once you sign it. Review it every five to ten years and update it whenever your life changes significantly.