Splitting a death benefit among several beneficiaries: the arithmetic

Most people choose how to split a death benefit with a feeling ("half to the kids, a quarter each to my sister and brother") and never run the numbers. The numbers are where the problems hide: percentages that add to 95 or 110, equal shares of an amount that does not divide evenly, fixed dollar gifts that exceed what the policy actually pays, and two policies that together favor one person far more than you meant. This worksheet shows each of those cases with sample benefits so you can repeat the arithmetic on your own forms.

Everything below uses invented round numbers. They are illustrations of how the math works, not predictions of what any insurer will do. Where a contract or state law decides the outcome, the text says so, because the insurer's reading of your designation, not your intention, is what gets paid.

The three ways to write a split

A beneficiary form usually offers one of three ways to divide proceeds among people at the same level (all primary beneficiary entries, or all contingent beneficiary entries):

1. By percentage. Each person gets a stated share of whatever the policy pays. The shares should add to exactly 100 percent.
2. Equally. Each named person gets the same share. The insurer divides the proceeds by the number of people who qualify.
3. By dollar amount. Each person gets a stated sum, sometimes with one person named to receive "the remainder."

Percentages and equal shares move with the benefit. If the policy pays more or less than you expected, everyone's share rises or falls together. Dollar amounts do not move, which is a feature when you want one person to receive a precise sum and a trap when the policy ends up paying less. Our how to choose a life insurance beneficiary guide covers the thinking behind who to name; this post covers the arithmetic after you have decided.

Seven worked cases

Each case below isolates one way a split goes wrong or right.

Worked case 1: a clean percentage split

Say a policy pays a death benefit of $450,000 and the designation reads 50 percent to a spouse, 30 percent to a daughter and 20 percent to a son.

• Spouse: 50 percent of $450,000 is $225,000.
• Daughter: 30 percent of $450,000 is $135,000.
• Son: 20 percent of $450,000 is $90,000.

Check the total: $225,000 plus $135,000 plus $90,000 is $450,000. The shares add to 100 percent, so every dollar is assigned and nothing is left over. That total check is the single most useful step in the worksheet. Add the shares on every level of the form, primary and contingent separately.

Worked case 2: shares that do not reach 100

Now say the owner meant to write 60, 25 and 15, but wrote 60, 25 and 10 on a $400,000 policy.

• 60 percent of $400,000 is $240,000.
• 25 percent of $400,000 is $100,000.
• 10 percent of $400,000 is $40,000.

That adds to $380,000. Five percent, or $20,000, belongs to no one. What happens to it depends on the policy terms, the insurer's procedures and the law of the state. Some insurers will refuse to pay until the beneficiaries agree in writing how to treat the gap. Some will treat the shares as ratios and scale them up. Some will treat the unassigned amount as having no beneficiary, which may send it to a contingent beneficiary, to the policy's default order of payment or to the estate. You cannot know which until it happens, and the family may wait months to find out. Our what happens if no beneficiary is named guide covers the default order that can apply; the better move is to avoid the gap.

If the insurer scaled the shares up, the arithmetic would look like this. The three shares total 95, so each person's share becomes their number divided by 95:

• 60 divided by 95 times $400,000 is $252,631.58.
• 25 divided by 95 times $400,000 is $105,263.16.
• 10 divided by 95 times $400,000 is $42,105.26.

Those add to $400,000.00. Notice that the person the owner meant to give 15 percent (the third) would get about $42,105, while the intended 15 percent would have been $60,000. A small clerical slip changed the third person's result by nearly $18,000, and the first person's by about $12,600. Pro rata scaling is only one possible outcome; this is an illustration of why a total of 95 is not harmless.

Worked case 3: shares that add up to more than 100

Say the form lists 50, 40 and 30 on a $300,000 policy. The total is 120 percent. Taken literally the form promises $150,000, $120,000 and $90,000, which is $360,000, more than the policy pays. Here too the outcome depends on the contract. If an insurer scales proportionally, each share is divided by 120: 50 over 120 times $300,000 is $125,000, 40 over 120 is $100,000, and 30 over 120 is $75,000, which adds to $300,000. Another insurer might not pay at all until everyone agrees, or might deposit the money with a court through an interpleader action, which is described in life insurance beneficiary disputes and interpleader. The point of the example is the cost of ambiguity: delay, legal fees and people who expected one number and receive another.

Worked case 4: equal shares that do not divide evenly

An equal split sounds simple until the amount does not divide. Say a $250,000 benefit goes to three people equally. One third of $250,000 is $83,333.33 and a third of a cent. Three payments of $83,333.33 add to $249,999.99, so one cent is left. In practice the insurer rounds one payment, but the form itself should say "equally," not "33.33 percent each." A percentage written as 33.33 three times totals 99.99 percent, which leaves 0.01 percent unassigned. On $250,000 that is $25, a trivial amount that could still trigger the problem in case 2, because a form that does not total 100 is a form that does not total 100.

The same arithmetic shows the clean cases. Four people equally on $250,000 is $62,500 each. Five people equally is $50,000 each. Eight equal shares of $250,000 gives $31,250 each, which is also 12.5 percent each. If you want a percentage form and have three people, write 33� � if the form allows fractions, or write two shares of 33 and one of 34 and say so in the remarks, or choose the word "equally."

Worked case 5: fixed dollar amounts and a remainder

Say the designation reads $50,000 to a niece, $50,000 to a nephew and "the remainder" to a sister. On a $300,000 policy, the sister receives $300,000 minus $100,000, which is $200,000. That is the intended result.

Now suppose the policy had an outstanding policy loan of $180,000 when the owner died, and the loan is subtracted from the proceeds, leaving $120,000. The niece and nephew still receive $50,000 each, because their gifts are fixed, and the sister receives $120,000 minus $100,000, which is $20,000. The owner may have meant the sister to be the main beneficiary, and the loan quietly reversed that. If the benefit had fallen below $100,000, the fixed gifts would exceed the payout and the insurer or a court would have to decide who bears the shortfall.

A fixed dollar designation therefore works best when the benefit is stable, for example a level term policy with no loan. For permanent policies with loans, percentages are usually safer, since every share shrinks or grows together. The other option is to name one person for "the remainder" and put the people you most want to protect as fixed amounts, but only if you check that the remainder person truly can absorb the shortfall.

Worked case 6: add up the whole household

A split on one policy can look fair and still produce an unfair total. Say a parent has two policies. Policy A pays $300,000 to the older child, Ana, as sole beneficiary, because she is the named contact. Policy B pays $100,000 split equally between Ana and her brother Ben.

• Ana receives $300,000 plus half of $100,000, which is $50,000, for $350,000.
• Ben receives $50,000.

Of $400,000 in total, Ana receives 350 over 400, which is 87.5 percent, and Ben receives 12.5 percent. If the parent meant to treat the children equally, the plan misses by $150,000 each way. Fixing it means changing Policy A to an equal split, which makes each child's total $200,000, or changing the shares of Policy B. Add the results across every policy, retirement account and employer plan before you decide whether the total matches your intention. The audit your beneficiaries: a worksheet for every policy and employer plan extends this exercise to every account.

Worked case 7: a split with a contingent layer

Primary and contingent levels each need their own arithmetic, and the second level is where people most often stop checking. Say the primary level reads 70 percent to a spouse and 30 percent to a daughter, and the contingent level reads 100 percent to a son. The policy pays $200,000.

If both primary beneficiaries survive the owner, the spouse receives 70 percent of $200,000, which is $140,000, and the daughter receives 30 percent, which is $60,000. The son receives nothing, because a contingent beneficiary is paid only if no primary beneficiary can take.

Now say the daughter died before the owner and the form says nothing more. Many insurers treat a primary share as failed when its beneficiary has died, and then either redistribute it among the surviving primaries or pass it to the contingent level. Which of those happens depends on the form's wording and the contract. If the spouse takes the daughter's share as well, the spouse receives $200,000 and the son nothing. If the share passes to the contingent beneficiary, the spouse receives $140,000 and the son $60,000. The same family and the same facts produce two different answers, a difference of $60,000, and neither answer appears on the form unless the owner wrote it. That is why the wording in primary vs contingent beneficiaries deserves a careful read, and why the next post in this series, when one of three beneficiaries dies first: who gets the share, spends its whole length on this one question.

Why many people prefer percentages

Percentages are not better in every case, but they have three advantages for a long-lived policy. They keep working if the benefit rises through dividends or paid-up additions or falls through a loan. They are easy to check, since the total must be 100. And they are easy to update: removing one person and redistributing the rest takes a change of numbers, not a rewrite of every dollar figure.

Dollar amounts are better when a specific need has a specific price. A policy that exists to pay off a $150,000 loan co-signed by a sibling might name the sibling for $150,000 and the rest to a spouse. In that case, check the arithmetic against the worst case: if the benefit were only the loan amount, would the spouse get nothing, and is that acceptable? Whatever you choose, keep the form consistent with a will that mentions the same people, and remember that the beneficiary form, not the will, controls who the insurer pays. See life insurance and your will.

How an insurer reads unclear wording

Insurers pay what the designation says, and a claims examiner has no authority to guess your intention. Several kinds of wording cause trouble.

• A name without a share. If three people are listed and no shares are given, many insurers treat the shares as equal, but some forms or contracts say otherwise. Write the share.
• Two ways of dividing on one line. "Equally, 50 percent to Sam and 25 percent each to the others" is not equal. The insurer may ask all three to sign an agreement.
• A relationship instead of a name. "My children" without names can work, but see our post on class wording, can you name stepchildren, grandchildren or friends as beneficiaries?, for how it behaves when family changes.
• Initials, nicknames and married names. The insurer must match the claimant to the form, so use the full legal name at the time of writing and note the relationship.

When the insurer cannot resolve a conflict, it can pay the money into a court and let a judge decide, which is the interpleader process described in life insurance beneficiary disputes and interpleader. That protects the insurer, not the family, and it adds months and legal costs that come out of the people you meant to help.

Things that change what the percentages apply to

Several features can change the base on which the percentages are calculated, so ask the insurer rather than assuming.

• Interest. Insurers generally pay interest on a death benefit from the date of death until payment. Many apply percentages to the total payable, interest included, but practices differ.
• Riders. An accidental death rider or a term rider may add to the proceeds in a covered event. Ask whether the shares apply to the total.
• Loans and unpaid premiums. These are usually deducted before the split, as in case 5.
• Deceased beneficiaries. When someone on your list dies first, the wording on the form decides who receives the share. That is its own set of calculations, worked through in when one of three beneficiaries dies first: who gets the share, and the per stirpes vs per capita calculator runs the common versions.
• Tax treatment. Death benefits paid to a named beneficiary are generally income tax free, but interest paid on a delayed benefit is taxable, so the dollar amounts on a tax form can differ from the benefit. A tax professional can answer for a specific case.

Your worksheet

Copy this onto paper and fill it in once for each policy and each level (primary, then contingent).

Run lines D through G first. If any check fails, change the form before anything else. Our guide on how to change your life insurance beneficiary explains the steps, and the insurer will usually send a confirmation you should keep with the policy.

Mistakes that the arithmetic catches

• Percentages that total 95, 99.99 or 110.
• Writing "equally" and also listing percentages, which asks the insurer to guess which controls.
• Fixed dollar amounts that exceed the likely payout after a loan.
• Leaving out a name, or leaving the form blank at the contingent level, so that a share has nowhere to go if a primary beneficiary has died.
• Not adding up the household total across policies.

Key takeaways

• Add the percentages on every level of the form; anything other than 100 can freeze a claim or send money somewhere you did not intend.
• Write "equally" for an equal split when the amount may not divide evenly, rather than rounded percentages.
• Fixed dollar gifts do not shrink when the benefit does, so a policy loan can wipe out a remainder beneficiary's share.
• Add each person's total across every policy and plan to see whether the result matches what you meant.
• Keep the insurer's written confirmation of the final designation with your papers.