Partial intestacy happens when a valid will exists but doesn’t account for everything the person owned at death. The assets the will names pass under its instructions. Everything else gets distributed under the state’s default inheritance statute, as if there were no will at all for that property. The result is a single estate running on two tracks at the same time, and it is far more common than people expect, usually because a will drafted years earlier never caught up with later accounts, later property, or later changes in the family.
Why a Will Ends Up Covering Only Part of the Estate
The most common cause is a missing residuary clause. The residuary clause is the catch-all that tells the court where to send anything the will didn’t specifically name. Without it, every asset the document failed to mention has no designated recipient and drops into intestacy by default. A bank account opened after the will was signed, a car bought years later, a late-in-life inheritance from a relative — any of these can become orphan assets.
Lapsed gifts cause the same problem. When a named beneficiary dies before the person who wrote the will and no backup is listed, the gift fails. Most states have anti-lapse statutes that redirect the gift to the deceased beneficiary’s own descendants, but these protections are narrow. Under the Uniform Probate Code’s version, the rescue only applies when the predeceased beneficiary was a grandparent, a descendant of a grandparent, or a stepchild of the person who wrote the will. If the beneficiary doesn’t fit that circle, the gift lapses and the property falls into intestacy.
Courts can also strike individual provisions without voiding the whole document. A clause found to violate public policy or to be the product of undue influence gets removed while the rest of the will stands. The property tied to the struck provision has no valid destination and joins the intestate portion. The same thing happens when a will leaves property to a trust that was never properly created or that was revoked before death.
After-acquired property is the quiet trigger. A will that says “I leave my house at 123 Main Street to my daughter” covers that one house. A second property bought later has no home in the will unless the document used broader language like “all my real property.” This is where the absence of a residuary clause really stings: every acquisition after signing becomes a potential orphan.
Assets That Pass Outside Both the Will and Intestacy
Before anyone starts sorting the estate into two piles, one category of property belongs in neither. Non-probate assets transfer automatically at death through beneficiary designations or survivorship, and they are unaffected by partial intestacy entirely.
- Life insurance proceeds go to the named beneficiary on the policy regardless of what the will says.
- Retirement accounts such as 401(k)s, IRAs, and pensions pass to whoever is listed on the beneficiary designation form with the plan administrator.
- Real estate or bank accounts owned as joint tenants with right of survivorship transfer to the surviving co-owner.
- Payable-on-death bank accounts and transfer-on-death brokerage accounts go directly to the named person.
This distinction matters in partial intestacy cases because it is easy to miscategorize. An executor who finds a $200,000 brokerage account not mentioned in the will might assume it has to run through intestacy. If the account carries a valid TOD designation, it passes directly to the named beneficiary and never becomes part of the probate estate. The reverse also happens: a retirement account with no named beneficiary, or whose beneficiary died first with no contingent listed, may end up in probate after all, and if the will doesn’t address it, in the intestate portion.
How the Uncovered Property Gets Distributed
Once the non-probate assets are set aside and the will’s specific gifts are honored, whatever is left runs through the state’s intestacy statute. Every state has one. The details differ, but the logic is the same: closest family first, in a fixed order.
The surviving spouse typically takes the largest share. Under the Uniform Probate Code, adopted in some form in roughly half the states, the spouse’s share depends on the family structure. If every child of the deceased is also a child of the surviving spouse and the spouse has no children from elsewhere, the spouse takes the entire intestate portion. When the deceased has children from a prior relationship, the spouse’s share becomes a fixed dollar amount plus half the balance. If there are no children but a surviving parent, the spouse receives a larger fixed amount plus three-quarters of the balance. Non-UPC states have their own formulas, and the thresholds and percentages can look quite different.
After the spouse’s share, children divide what remains equally. If a child predeceased the parent but left grandchildren, those grandchildren usually step into their parent’s place. With no spouse or children, the estate moves to parents, then siblings, then nieces and nephews, and so on down the family tree. The hierarchy is rigid. It doesn’t weigh the quality of relationships. An estranged sibling the deceased hadn’t spoken to in twenty years inherits ahead of a close friend who provided daily care.
The parts of the will that remain valid stay fully enforceable through all of this. A will that leaves a specific painting to a friend and a car to a nephew still controls those gifts. Only the uncovered property runs through the statutory formula.
The 120-Hour Survival Rule
An heir who dies very shortly after the deceased may be treated as having predeceased them. Under the Uniform Simultaneous Death Act, adopted in most states, a person must survive the decedent by at least 120 hours to qualify as an heir. The rule avoids running a second full probate for someone who died days after the first, and it can shift the distribution to an entirely different set of heirs.
Debts and Taxes Come Out First
No heir sees a dollar until debts are paid, and this applies to both the testate and intestate sides of the estate. The executor must inventory every outstanding obligation: medical bills, credit card balances, mortgage debt, funeral expenses. Most states require the executor to publish notice to creditors and wait a set period for claims before distributing anything.
Federal debts jump the line. When an estate lacks enough assets to pay all claims, debts owed to the United States must be paid first. An executor who pays other creditors ahead of federal obligations can be held personally liable for the unpaid government claims up to the amount distributed prematurely.1Office of the Law Revision Counsel. 31 U.S. Code 3713 – Priority of Government Claims This catches executors who don’t know the rule, especially when back taxes are involved.
On the heir’s side, property that passes through intestacy gets the same tax treatment as property distributed under the will. The most valuable feature is the stepped-up basis: inherited assets are revalued to their fair market value on the date of death, erasing capital gains that built up during the deceased’s lifetime.2Office of the Law Revision Counsel. 26 USC 1014 – Basis of Property Acquired From a Decedent If a parent bought stock for $10,000 decades ago and it was worth $100,000 at death, the heir’s basis is $100,000. Sold the next day for $100,000, there is no capital gain. The treatment is identical whether the stock passed under the will or through intestacy.
The Court Process Takes Longer
Probating a partially intestate estate requires a specific filing that most people have never heard of: a petition for letters of administration with will annexed. It is the procedural tool courts use when a valid will exists but doesn’t cover the whole estate, or when the named executor cannot serve. The petition asks the court to appoint someone to administer the intestate assets while enforcing the will for everything it does cover.
The petition separates the estate into its two components, with the testate property and its value listed alongside the intestate property and its value. Every potential heir under the state’s intestacy statute has to be identified by name and relationship, usually with birth certificates, marriage certificates, or similar records as proof. Every person named in the will and every legal heir must receive formal notice, which gives them the chance to contest the distribution, challenge the heir list, or raise objections to the will. The window to object commonly runs 30 to 90 days.
At the hearing, the judge confirms the heir list and verifies that the proposed distribution follows the statute. If no disputes arise, the court issues a decree of distribution, which is the document banks and land registry offices need before releasing accounts or recording new ownership. The process from filing to final decree commonly takes one to two years. Contested cases run considerably longer.
Some states offer an affidavit-based shortcut if the intestate portion is small. The thresholds, waiting periods, and sworn-statement requirements differ sharply between states, so checking the specific statute before using the shortcut is essential.
What the Executor Is on the Hook For
An executor handling a partially intestate estate carries more exposure than one administering a straightforward will. Beyond distributing the named gifts, the executor has to correctly identify every legal heir under the intestacy statute, which means mapping the entire family tree rather than just the people the will mentions.
The duty to locate heirs is real. If an heir can’t be found, the executor must document every attempt and may need to file a sworn statement describing those efforts. Courts can require additional measures: newspaper notice, contacting known relatives, searching public records, even hiring a professional heir locator. Spending estate funds on the search may require court approval.
Getting the distribution wrong has personal consequences. An executor who pays the wrong heirs, or who pays creditors in the wrong order, can be held personally liable for the shortfall. The executor’s duty runs to every heir, including ones who haven’t surfaced yet. Skipping the due diligence and hoping no one appears later is a gamble that lands on the executor’s own balance sheet when it fails.
Preventing It in the First Place
The simplest fix is a residuary clause. One provision directing that everything not specifically named elsewhere goes to a chosen person or group closes the gap entirely. A typical clause reads something like “I give the rest of my estate to my spouse, or if my spouse does not survive me, to my children in equal shares.” With that language in place, no asset can fall into intestacy no matter what the person acquires after signing.
For people whose main estate planning tool is a living trust, a pour-over will does the same job. It names the trust as the residuary beneficiary, and anything that wasn’t transferred into the trust during life gets poured into it at death and distributed under the trust’s terms. Pour-over assets still go through probate before reaching the trust, so this isn’t a way around the court process. It is a way to prevent partial intestacy.
Contingent beneficiaries matter just as much. Every specific gift in the will should name a backup. Every life insurance policy, retirement account, and POD or TOD account should list both a primary and a contingent beneficiary. Skipping the backup is a bet that the primary will outlive the account holder, and that bet fails more often than people plan for.
Reviewing the will every three to five years, or after any marriage, divorce, birth, death, or significant purchase, catches the gaps before they turn into probate problems. Updating a will is cheap. A partial intestacy proceeding is not.