Per Stirpes Inheritance: What It Means for Grandchildren

What Per Stirpes Means in Plain Language

Per stirpes is Latin for "by the branch." When a will or intestate law distributes assets per stirpes, each branch of the family tree gets an equal share, regardless of how many people are in each branch. If the person who heads a branch has already died, their share flows down to their children — the grandchildren.

This is the distribution method that matters most to grandchildren, because it's the one that determines whether you inherit anything when a parent predeceases a grandparent.

How It Works: A Concrete Example

Your grandparent's estate is worth $900,000. They had three children: Mary, John, and Jim. Mary and John have both died before the grandparent. Mary had two children (Susan and Sara). John had two children (Adam and Claire). Jim is still alive and has three children (Dave, Don, and Dana).

Under per stirpes (by the branch), the estate splits into three equal shares at the first generation:

• Jim (surviving child) gets $300,000 — his full one-third share
• Susan and Sara split Mary's $300,000 share — $150,000 each
• Adam and Claire split John's $300,000 share — $150,000 each
• Dave, Don, and Dana get nothing directly because their parent Jim is still alive and inherits his share himself

The key principle: each branch gets a third, and if the branch head is deceased, the share divides equally among their children. Jim's children are excluded not because they're less important, but because Jim is alive to inherit his own share.

Per Capita: The Alternative That Treats Everyone Equally

Per capita means "by the head." Under this method, every living descendant at the same generational level receives an equal share.

Same example: Jim plus the four grandchildren of deceased branches (Susan, Sara, Adam, Claire) equals five living descendants sharing equally. But in strict per capita as applied in some jurisdictions, all eight living descendants — including Jim's children — share equally.

Using the broadest per capita interpretation with $900,000 and eight living descendants: each person gets $112,500. Jim goes from $300,000 (per stirpes) to $112,500. Susan goes from $150,000 to $112,500.

Per capita is less common in modern wills but appears in some state intestacy statutes. It redistributes wealth more evenly across the family but can produce outcomes that feel arbitrary — Jim's children, whose parent is alive and healthy, receive the same share as Susan and Sara, whose mother died years ago.

By Representation: The Modern Hybrid

Many states now use a "by representation" or "modern per stirpes" approach. It works like per stirpes at the first generation — each branch gets an equal share. But when assets pass to the grandchild level, the shares of all deceased branches are pooled and divided equally among all grandchildren, rather than being confined within each branch.

Same example: Jim still gets $300,000. The remaining $600,000 (Mary's and John's combined shares) pools and divides equally among all four grandchildren: Susan, Sara, Adam, and Claire each get $150,000.

In this specific example, the result is identical to per stirpes because Mary and John each had two children. The difference shows up when the branches are unequal — if Mary had one child and John had three, per stirpes would give Mary's child $300,000 and John's children $100,000 each, while by representation would give all four grandchildren $150,000.

When a Grandparent Dies Without a Will

If your grandparent died intestate (without a will), state law dictates the distribution method. Most US states use some version of per stirpes or by representation as their default. The Uniform Probate Code, adopted in whole or in part by roughly twenty states, uses representation by default.

The practical implication: if your parent predeceased your grandparent and there's no will, you likely step into your parent's shoes and inherit their share. But the specifics — which method applies, whether stepchildren or adopted children qualify, how half-siblings are treated — vary significantly by state.

This is one of the situations where a thirty-minute consultation with a probate attorney in the state where the grandparent lived is worth far more than general guidance. Intestate succession rules are state-specific, and getting the classification wrong can cost you your entire inheritance.

What Grandchildren Should Know

You may have inheritance rights you don't know about. If your parent died before your grandparent and the grandparent's will uses per stirpes language (or the state's intestacy law defaults to it), you may be entitled to your parent's share under the will's terms or state law. Notice requirements differ by state, so check whether the personal representative has identified you and ask what proof or filing is needed.

Named beneficiary designations override the will. Retirement accounts, life insurance policies, and payable-on-death bank accounts go directly to whoever is named on the account, regardless of what the will says. If your grandparent named your deceased parent as beneficiary and never updated the designation, those assets may go to the estate for redistribution — or they may go to a contingent beneficiary. Check.

Contesting a will is possible but difficult. If you believe a grandparent's will was changed under undue influence — a relative pressuring a cognitively declining grandparent to alter the distribution — standing and filing deadlines depend on state law and whether you are an interested person. Contest windows can be short, so speak with a probate attorney promptly. The burden of proof is on the person contesting.

Joint tenancy trumps everything. If the grandparent's home was held in joint tenancy with right of survivorship with one of their children, the house passes directly to that child outside of probate. No will provision, intestacy law, or per stirpes calculation can redirect it.

The Bigger Picture

Inheritance questions after a grandparent's death are rarely just financial. They're tangled up with family roles, perceived fairness, decades of relationship dynamics, and the question of whose loss is being recognized. A $150,000 inheritance from a deceased parent's share carries emotional weight that has nothing to do with the dollar amount.

If you're navigating the legal, emotional, and practical dimensions of a grandparent's death, the When Your Grandparent Dies toolkit includes an estate triage framework and worked inheritance examples designed for grandchildren specifically — the people most often left out of generic estate planning resources.