How Much Life Insurance Do I Need?

You've heard it. Maybe your HR department said it. Some article somewhere gave you that rule and now it lives in your head as the answer.

Here's the problem with it: it ignores your actual financial situation. A 35-year-old making $75,000/year with a $400,000 mortgage, three kids under 10, and $12,000 in car debt has completely different needs than a 35-year-old making $75,000/year who rents, has no kids, and has a spouse who earns $80,000. The 10x rule says both people need $750,000 in coverage. That's wrong for one of them and probably both.

The 10x shortcut exists because it's easy to remember and easy to sell. It doesn't exist because it's accurate. We're going to do this properly.

Two methods worth knowing: the DIME method, which is the gold standard for families with dependents, and the income replacement method, which is simpler but still better than the 10x rule. We'll walk through both with real numbers.

DIME stands for Debt, Income, Mortgage, Education. You add up each category and subtract your existing assets. The result is your coverage number.

D — Debt: Everything you owe that isn't your mortgage. Car loans, credit card balances, student loans, personal loans. Also add estimated funeral expenses—realistic budget is $12,000-$15,000 in 2026.

I — Income: Your annual income multiplied by the number of years you want to replace it. If your youngest child is 2 years old and you want to support the family until they're 22, that's 20 years of income replacement. If your youngest is 12, maybe you need 10 years.

M — Mortgage: The current outstanding balance on your mortgage. The goal is that your family can pay off the house and not face losing it.

E — Education: College and graduate school expenses for each child. Current average four-year public university cost including room and board is around $110,000. Private university is $220,000+. Use these as your estimates if you don't have more specific numbers.

Then subtract: liquid assets (savings accounts, investment accounts that aren't retirement accounts), existing life insurance policies, and any survivor benefits your family would receive from other sources.

The remaining number is how much life insurance you need. Let's put actual numbers on this.

Meet a 32-year-old making $50,000/year. Married, two kids ages 4 and 7. Owns a home.

Debt: $18,000 car loan + $5,200 credit card balance + $0 student loans + $13,000 funeral estimate = $36,200

Income: $50,000 x 18 years (until youngest turns 22) = $900,000

Mortgage: Current balance $195,000

Education: 2 kids x $110,000 (public university) = $220,000

Total: $36,200 + $900,000 + $195,000 + $220,000 = $1,351,200

Now subtract assets: $15,000 in savings + $12,000 in investment account + $50,000 employer life insurance policy = $77,000

Final number: $1,351,200 - $77,000 = $1,274,200

Round up to $1.3 million.

The 10x rule would have said $500,000. That's not half of what this family actually needs—its closer to one-third. This is why the shortcut is dangerous. If this person dies tomorrow with $500,000 in coverage, the surviving spouse faces paying a mortgage, raising two kids alone, and funding two college educations with $500,000 that won't last more than a handful of years under those pressures.

Cost of $1.3 million in 20-year term coverage for a healthy 32-year-old: roughly $50-70/month. Easily affordable. The $500,000 policy would have run $20-30/month. The extra $30/month for the correct coverage amount is one of the best financial decisions this person can make.

Now let's look at a 38-year-old making $75,000/year. Three kids ages 5, 9, and 12. Spouse doesn't work outside the home.

Debt: $22,000 car loan + $8,500 credit card + $26,000 student loan remaining + $13,000 funeral = $69,500

Income: $75,000 x 17 years (until youngest turns 22) = $1,275,000

Mortgage: $285,000 remaining

Education: 3 kids x $110,000 (public estimate) = $330,000

Total before subtractions: $69,500 + $1,275,000 + $285,000 + $330,000 = $1,959,500

Subtract assets: $22,000 savings + $40,000 investment account + $75,000 employer life insurance = $137,000

Final number: $1,959,500 - $137,000 = $1,822,500

Call it $2 million.

One more thing this calculation doesn't capture: the non-working spouse. If the breadwinner dies and leaves a surviving spouse who needs to enter the workforce, that spouse may need training or education. Childcare costs also aren't in the DIME formula. And the formula uses raw income without inflation adjustment—real purchasing power of $75,000 today is different from $75,000 in 15 years.

For a family in this situation, a financial advisor would often recommend at least $2-2.5 million in total coverage. The DIME result is a floor, not a ceiling.

A 38-year-old buying $2 million in 20-year term coverage pays roughly $80-110/month from a carrier like Banner or Protective. That's two or three streaming services. It's the most asymmetric financial protection you can buy.

This one: 42-year-old making $100,000/year. Two kids ages 8 and 11. Spouse works part-time earning $30,000/year.

Debt: $35,000 car loans (two vehicles) + $11,000 credit card + $0 student loans + $13,000 funeral = $59,000

Income: $100,000 x 14 years (until youngest turns 22) = $1,400,000

Mortgage: $340,000 remaining

Education: 2 kids x $110,000 = $220,000

Total before subtractions: $59,000 + $1,400,000 + $340,000 + $220,000 = $2,019,000

Subtract assets: $45,000 savings + $65,000 brokerage account + $100,000 employer life insurance = $210,000

Final number: $2,019,000 - $210,000 = $1,809,000

Round to $1.8 million. And honestly, for a $100K earner at 42 with real assets, you probably want $2 million as a round number.

Here's something this calculation doesn't account for: the surviving spouse earns $30,000/year. You might reduce the income replacement factor somewhat because the family has some ongoing income—but don't reduce it too aggressively. The $30K part-time income is likely to change if the primary earner dies (the spouse might need to work full-time, but might also face childcare costs that eat into that).

A 42-year-old buying $2 million 20-year term: expect $120-170/month depending on carrier and exact health classification.

If the DIME calculation feels like too much, the income replacement method is a cleaner approach—though less precise.

Formula: Annual income x years until retirement x 70%

Why 70%? The theory is that you only need to replace about 70% of income because the deceased's personal expenses (their food, clothing, car, etc.) are no longer ongoing. This is contested—some planners use 100%, some use 60-80% depending on the family structure.

Example: $75,000/year income, 27 years until retirement (age 38 → 65): $75,000 x 27 x 0.70 = $1,417,500.

That's close to the $1,822,500 DIME result for the same profile—different methods, similar neighborhood. The DIME method gives you a more granular number and forces you to actually look at your mortgage, debts, and education costs.

The income replacement method is good for a quick sanity check. DIME is what you want for an actual purchasing decision.

The most expensive life insurance mistake isn't overpaying for whole life (though that's real). It's buying $500,000 when you need $1.5 million, and finding out the coverage was inadequate at the worst possible moment.

This happens for a few reasons. The 10x rule gives families permission to buy less than they need. Price shopping leads people to compare $500K policies instead of shopping for the right coverage amount at the best price. Agents sometimes start low to get the sale and convert later.

The math on this is brutal. A surviving spouse with two kids and a $300,000 mortgage who receives a $500,000 death benefit has maybe 2-3 years before that money is gone—depending on how carefully it's managed. After that, they're on their own with no income replacement.

Run the DIME numbers. Then price coverage at that number. You'll often find the monthly cost difference between the wrong amount and the right amount is surprisingly small.

A 30-year-old buying a 10-year term policy to save money is making a mistake. By the time that 10-year term expires, they're 40 with kids who are still minors and a mortgage that isn't paid off. Now they're buying life insurance at 40-year-old rates—roughly 3-4x what they were paying at 30—or they have health issues that make it expensive or hard to get.

Match the term length to your actual coverage need. If your youngest child will be independent in 22 years and your mortgage has 25 years left, buy a 25 or 30-year term. Yes, it costs more per month than a 10-year term. It costs much less than rebasing your entire coverage at 40 or 45 under less favorable conditions.

The other version of this: buying term when you actually need permanent. If you genuinely have an estate planning need for permanent coverage—high net worth, special needs dependent—don't buy a 30-year term and plan to figure it out at 65. Get a permanent policy while you're young and the premiums are lower.

If one spouse doesn't earn income but handles childcare, cooking, household management, transportation, and everything else that keeps a family running—their death creates a massive financial gap that has nothing to do with lost salary.

The economic value of stay-at-home services is estimated at $180,000+ per year when you price out childcare, housekeeping, meal preparation, transportation, and tutoring at market rates. A family that loses the stay-at-home parent without adequate life insurance may face $30,000-50,000+ per year in replacement costs on top of the grief.

This is consistently underinsured. If one spouse isn't earning income, they're often uninsured or insured at minimum levels. Get both spouses covered. A policy for the stay-at-home spouse should be sized to replace the economic value of their labor, not their income.

Life insurance isn't a set-it-and-forget-it purchase. Your coverage need changes significantly over time, and so does the cost of getting covered.

When to add coverage: new baby, new mortgage, significant income increase, spouse stops working, you take on new debt.

When you might reduce coverage: kids are independent adults, mortgage is paid or nearly paid, you've accumulated significant retirement assets that could support a surviving spouse.

Buying a new policy: if you've had significant positive health changes (lost weight, stopped smoking), a new policy might actually be cheaper than your current one even accounting for your older age. Smokers pay roughly 2-3x more than nonsmokers—quitting and getting reclassified after 12+ smoke-free months can dramatically cut premiums.

Annual review: once a year, pull out your life insurance policy and run through the DIME numbers again. Takes 20 minutes. If there's a significant gap, address it before a health issue makes you uninsurable or expensive to insure.