Per Stirpes vs. Per Capita Beneficiary Shares

A beneficiary form can name children equally and then ask whether a deceased child’s descendants should inherit that child’s share. The answer changes who receives money, how much each person gets, and whether one family branch keeps the same share when its members die. “Per stirpes” and “per capita” describe distribution methods, but a form, will, trust, or state statute may define the terms differently. The reliable way to compare them is to draw the family tree, identify the people alive at the distribution date, and apply the exact wording one step at a time.

Start with the intended family outcome

Imagine a parent who wants each of three children to receive one-third of an account. If one child dies first, does the parent want that child’s children to receive the one-third their parent would have received, or does the parent want the surviving children to split everything equally? The first plan preserves shares by branch. The second focuses on the people who survive in the designated group. Those are different objectives, so a planner should not translate the terms into “fair” or “equal” without asking what the client means by equal.

The family facts matter too. A beneficiary may die before the account owner, die after the owner but before distribution, disclaim an interest, be legally treated as having predeceased, or have no surviving descendants. Those events can trigger different provisions. Before calculating, confirm whose death is relevant, when the governing document says a person must survive, whether a class gift is involved, and what the account’s current beneficiary form actually says.

Per stirpes: distribute by family branch

“Per stirpes” is commonly understood as “by branch.” If an initial beneficiary dies and leaves descendants who qualify to take, those descendants step into that beneficiary’s branch and divide the share allocated to it. A branch’s share can therefore remain the same even when it contains more people than another branch. Massachusetts General Laws, for example, directs a per-stirpes distribution to divide at the children’s generation and repeat the division down each deceased child’s line. Other jurisdictions and instruments can use different rules, so the phrase alone should not replace reading the controlling language.

Worked example: branch shares stay in place

Suppose an account worth $900,000 names a parent’s three children, Alex, Blair, and Casey, equally. Alex survives. Blair died before the account owner and has two children. Casey died before the owner and has three children. Assume the governing document applies a per-stirpes rule and all five grandchildren survive and qualify. First divide the account into three child branches: $300,000 for Alex, $300,000 for Blair’s branch, and $300,000 for Casey’s branch. Alex takes $300,000. Blair’s two children divide $300,000, so each receives $150,000. Casey’s three children divide $300,000, so each receives $100,000. Each child branch keeps one-third, even though the number of descendants differs.

This illustrates why branch-based language is useful when the client wants descendants to represent a deceased child. It also shows the trade-off: grandchildren in a smaller branch can receive more per person than grandchildren in a larger branch. The method gives each child’s line the same total allocation; it does not make every grandchild’s personal share equal.

Per capita: distribute to people in equal shares

“Per capita” means equal shares to people taking in their own right, but that definition alone does not answer which people are included. A disposition may say “to my three named children, per capita,” which usually points to equal shares among the named beneficiaries who qualify at the relevant time. It may instead say “to my descendants per capita,” which raises a broader question about which generations take and whether the descendants of a person who died earlier are included. New York’s Estates, Powers and Trusts Law defines a disposition as per capita when each person takes in their own right an equal portion. The actual gift language and governing state law remain decisive.

In everyday conversations, people sometimes use “per capita” as though it automatically means that all surviving children and grandchildren split one pot equally. That result can differ from a legal per-capita-at-each-generation rule, which starts at a specified generation and redistributes shares through later generations. It can also differ from a form’s default rule when a named primary beneficiary dies. A planner should not assume a plain-English label settles these issues.

Per capita at each generation: equalize within each generation

Per capita at each generation is a specific distribution method found in the Uniform Probate Code model and state enactments. Under Massachusetts § 2-709, the initial shares are determined at the nearest generation containing a surviving descendant: count the surviving descendants at that generation and deceased descendants at that level who left surviving descendants. Each living person at that level gets one share. Shares for deceased people with descendants are then combined and redistributed equally among the next generation of descendants, repeating as needed.

Compare the same $900,000 family example

Use the same family: Alex is alive; Blair died leaving two children; Casey died leaving three. Under per capita at each generation, the first division is still into three shares at the children’s level. Alex receives one share, or $300,000. Blair’s and Casey’s two deceased-child shares are combined: $600,000. The five grandchildren then divide that combined amount equally, receiving $120,000 each. The method preserves one initial share for Alex and equalizes the inherited pool among all five grandchildren, rather than preserving separate Blair and Casey branch totals.

The totals still equal $900,000. The difference is the distribution rule: per stirpes gives each child’s line a one-third share, while per capita at each generation combines the shares of the deceased children and allocates the combined amount equally among their descendants at the next generation. In a real matter, use the jurisdiction’s statute and the document’s own definition; the numbers here illustrate Massachusetts-style statutory wording and should not be generalized into a universal default.

A second example shows when the results diverge more

Now suppose the parent had four children: Morgan is alive; Lee died with one child; Pat died with three children; and Quinn died without descendants. The account is $800,000. Under a per-stirpes rule like Massachusetts § 2-709(c), Quinn is disregarded because Quinn left no surviving descendants. The starting shares are Morgan, Lee’s branch, and Pat’s branch: $800,000 divided by three. Morgan receives $266,666.67; Lee’s child receives $266,666.67; Pat’s three children receive about $88,888.89 each. Lee’s branch and Pat’s branch each keep one-third even though they have different numbers of descendants.

Under per capita at each generation using a rule like § 2-709(b), the initial shares are also counted at the children’s level: Morgan, Lee, and Pat each represent a share because each either survives or leaves descendants. Quinn is disregarded. Morgan takes one-third, or about $266,666.67. The remaining two-thirds are pooled and divided among Lee’s one child and Pat’s three children, so each of those four grandchildren receives about $133,333.33. The child in Lee’s smaller branch receives the same amount as each child in Pat’s larger branch. That is the equal-per-person effect at the descendant generation.

Do not confuse per capita with per capita at each generation

The short label “per capita” is not always interchangeable with “per capita at each generation.” The first often describes taking equal shares in one’s own right; the second identifies a multi-generation distribution algorithm. A legal instrument might define “per capita” itself, incorporate a state statute, or use a phrase whose meaning depends on the jurisdiction’s construction rules. A beneficiary form may offer only a checkbox and rely on the contract or governing law for the default. When the difference changes who gets money, use the exact form and applicable law rather than a glossary alone.

Beneficiary forms, wills, and trusts can produce different outcomes

A will does not automatically control an IRA, life insurance policy, annuity, payable-on-death account, or transfer-on-death registration. Those assets generally pass under their beneficiary designation, subject to the account contract, governing law, and applicable federal rules. A person may intend a trust or will to control a share but leave an old account form in place. The planner should review each asset’s actual designation and the current plan or contract rather than assuming every asset follows the same family-distribution clause.

Massachusetts illustrates why the account type matters: its statute has a specific substitute-gift rule for certain deceased beneficiaries of life insurance, retirement plans, POD accounts, and transfer-on-death registrations. The rule applies only under its stated conditions, and the payor can have protection before receiving written notice of a competing claim. That state example does not create a nationwide rule for every contract or plan. For an employer plan, federal law and the plan document can affect who may be named and what happens at death; the plan administrator’s procedures matter.

Likewise, an anti-lapse statute may substitute descendants for a deceased beneficiary under some wills, but it may not apply to a nonprobate transfer or may be displaced by the instrument’s wording. The planner needs to distinguish a will devise, trust distribution, retirement account, insurance policy, and joint ownership transfer. One client can have the same phrase appear across several documents yet receive different legal results because the documents and governing rules differ.

A practical beneficiary review for a financial planner

1. List each asset that passes by a beneficiary designation, including retirement accounts, life insurance, annuities, and POD or TOD accounts.
2. Obtain the current beneficiary form or verified institution record. Do not rely only on an old statement, a will, or the client’s recollection.
3. Record primary and contingent beneficiaries, percentages, class language, survival periods, and any per stirpes or per-capita selection.
4. Draw a family tree and ask what should happen if each named beneficiary dies before the owner. Include descendants in multiple generations and beneficiaries who leave no descendants.
5. Test the proposed language with at least one example where a child dies with descendants and one where a child dies without descendants.
6. Coordinate account forms with the client’s estate attorney and the custodian or plan administrator. Have the client update and confirm the institution’s accepted designation.
7. Set a review trigger after marriage, divorce, birth, adoption, death, a major account change, or a change in the client’s distribution goal.

A useful client question is: “If one of your children dies before you, should that child’s children receive the share their parent would have received, or should the surviving named beneficiaries divide the account?” Then ask whether that outcome should be different if the deceased child leaves one descendant, several descendants, or none. The answer is the planning objective; the legal document must then express that objective in language the custodian and governing law will apply.

Exam method: draw, divide, and verify

1. Identify the instrument and the exact distribution phrase. Do not jump from a beneficiary form to intestacy rules without checking the document.
2. Mark the distribution date and identify which named beneficiaries survive under the required survival period.
3. For per stirpes, create the required branch shares first, then divide a deceased beneficiary’s share among that beneficiary’s qualifying descendants.
4. For per capita at each generation, find the nearest generation with surviving descendants, allocate initial shares there, pool the shares for deceased members with descendants, and divide that pool at the next generation.
5. For plain per capita, identify who takes in their own right and whether the document or law provides substitute gifts for descendants.
6. Check for descendants who died without descendants, disclaimers, class-gift language, anti-lapse provisions, and contract defaults.
7. Add the dollar amounts and confirm the full asset is allocated once, with no share counted twice or left unexplained.

Common calculation errors

• Dividing the entire estate by every living child and grandchild before deciding which generation receives the initial shares.
• Giving a deceased child’s branch zero merely because the child is not living, even though the governing per-stirpes clause gives that branch to descendants.
• Keeping a deceased branch’s original share separate under a per-capita-at-each-generation rule when the statute requires deceased members’ shares to be combined and redistributed.
• Assuming two grandchildren in one branch receive the same amount as three grandchildren in another branch under per stirpes. They split the branch share, so the per-person amount differs.
• Treating an ordinary per-capita clause as automatically including every generation of descendants, even when the instrument names only a particular class of beneficiaries.
• Applying one state’s default distribution method to a contract or estate governed by another state’s law.

The core distinction is what is being equalized. Per stirpes generally preserves the share assigned to a family branch. Per capita at each generation pools shares for deceased beneficiaries and equalizes among descendants at the next generation. Plain per capita generally focuses on equal shares for people taking in their own right, but the document and governing law specify the group. Draw the generations first; the arithmetic becomes much easier once the rule is clear.