How Much Life Insurance Do You Need? Three Methods

How much life insurance do I need? Insure the gap: what your household would need if your income stopped, minus what it already has. Ten times gross income is a usable starting point, but the honest calculation subtracts existing savings, retirement accounts and any employer cover, then sets the term to end when the need does. Most households land somewhere between eight and fifteen times income. Most people arrive at a life insurance amount by picking a number that sounds serious. Half a million. A million. It sounds like enough because it is more money than they have ever had at once.

The correct amount is not a round number. It is a gap: what your household would need, minus what it already has.

Method 1: how much life insurance do I need as a multiple of income?#

Multiply gross annual income by 10 to 12.

A household earning $95,000 lands at $950,000 to $1.14 million.

What it gets right: it is fast, and it is much better than nothing.

What it misses: everything specific. It does not know whether you have a $380,000 mortgage or none, whether you have $200,000 saved or nothing, whether your partner earns $90,000 or zero, or whether your children are 2 or 17.

Use it as a sanity check on a number you calculated another way.

Method 2: DIME#

Four components, add them up.

D: Debt. All non-mortgage debt, plus final expenses. Credit cards, car loans, student loans that would not be discharged, and funeral costs.

I: Income. Annual income multiplied by the number of years your household needs it replaced.

M: Mortgage. The outstanding balance.

E: Education. Estimated cost of educating each child.

Worked on a real household: a 34-year-old earning $95,000, married with children aged 4 and 7, a partner earning $40,000, a mortgage of $310,000, $22,000 of other debt.

That number is large, and it is large for a reason: it assumes full income replacement for eighteen years with no offset for anything the household already owns.

Method 3: what does a full needs analysis look like?#

The same idea, but subtracting what already exists. This is the version worth doing.

Step 1: total what the household needs.

Note the first line. It is not full income replacement, because the partner earns $40,000 and the household is one person smaller. What has to be replaced is the shortfall, not the whole salary.

Step 2: subtract what exists.

Step 3: the gap. $1,583,000 − $370,000 = $1,213,000.

Round to $1.25 million.

Should you count your employer cover?#

The $190,000 of employer coverage in that calculation is the weakest asset on the list. It disappears when the job does, including when the job ends because you became ill, which is exactly when replacing it becomes expensive or impossible.

A defensible approach is to count group cover at half its face value in the analysis, or to ignore it entirely and treat it as a buffer.

How long should the term be?#

The term should end when the need does.

Take the later of:

• Youngest child reaches financial independence. Child's current age subtracted from 22, or 18 if you are not funding education.
• Mortgage payoff date. Years remaining on the current schedule.

For the household above: youngest is 4, so 18 years. Mortgage has 26 years remaining. Take 26, round up to a 30-year term.

Insurers price 10, 15, 20, 25 and 30-year terms, and the jump from 25 to 30 is usually modest. Buying slightly long is cheap insurance against your plans changing.

Laddering, and whether it is worth it#

Your need declines over time: the mortgage shrinks, the children get older, savings grow. Laddering matches that: rather than $1.25 million for 30 years, you buy $750,000 for 30 years plus $500,000 for 15 years. When the shorter policy expires, your need has genuinely dropped.

It reduces total premium. It also means two applications, two policy fees, two sets of paperwork, and a real risk that in fifteen years nobody remembers what the plan was. For most households the saving does not justify it. For someone insuring a very large amount, it can.

The stay-at-home parent#

The household above has a partner earning $40,000. Suppose instead that partner does not work outside the home.

If they died, the surviving parent would need to buy: childcare during working hours, after-school care, holiday cover, transport, and a meaningful share of household management. That is easily $25,000 to $40,000 a year while the children are young, plus the possibility that the surviving parent has to reduce their own hours.

Ten years of that is $300,000 or more. It is not a courtesy policy; it is a real, calculable cost that most households leave entirely uninsured.

What if your income is irregular?#

The methods above assume a steady salary. Self-employment, commission and freelance income break that assumption, and the usual advice quietly ignores it.

Use a three-year average, not last year. A single strong year overstates what your household actually relies on, and a single weak one understates it. Averaging across three years, or taking a conservative median, produces a figure your family could plan around.

Insure the household floor, not the peak. What matters is the income level your family genuinely depends on to keep the house and the routine intact. Anything above that is upside, and insuring upside is expensive.

Add business obligations separately. A personally guaranteed business loan, an office lease, or a partner who would need to buy out your share are real liabilities that do not appear in a household budget. Key person and buy-sell cover are separate products, and mixing them into a personal policy usually gets the amount wrong in both directions.

Expect underwriting to want documentation. Two years of tax returns is standard for self-employed applicants, and insurers generally underwrite on net income after business expenses rather than gross revenue. Applicants who aggressively minimise taxable income are frequently offered less cover than they expected, which is worth knowing before you apply rather than after.

If a diagnosis is also in play, life insurance with a pre-existing condition covers how underwriters price it, and the NAIC buyer guide is the neutral reference. Once you have the amount, term vs. whole life decides the product, and the Insurance Information Institute has a second view on the arithmetic.

One number to remember#

The single most common error in this category is not choosing the wrong method. It is choosing a number that sounds like a lot of money.

$500,000 sounds enormous. Spread across eighteen years it is $27,800 a year, before it has paid off a mortgage or educated anyone. Run the arithmetic on the years, and the round numbers stop looking generous.