$105K Salary, $360K Mortgage, Two Kids: How Much Life Insurance Do You Actually Need? (DIME Math Says $1.45M, Not $1.05M)
You just closed on a house. Your second kid just started preschool. Somewhere in the middle of the moving boxes, you wonder: "If something happened to me, would my family actually be okay?"
Then you Google it. One calculator says $500K. Another says $1.3M. Your HR portal says you're "covered" for $105,000 because your employer gives you one times your salary. Nobody explains why the numbers differ.
I'm going to explain it. I'll show every line of the math, using one example family, so you can swap in your own numbers. The 10x-salary shortcut says this family needs $1.05M. A transparent needs analysis says $1.45M. That $400K difference is the gap.
The Example Family (Yours Will Differ)
Everything below is a constructed example, not a quote or a prediction:
- You: age 36, $105,000 gross salary, healthy nonsmoker
- Spouse: age 35, $55,000 salary, keeps working
- Kids: ages 4 and 7
- Mortgage: $360,000 balance, 25 years left at 6.5% fixed
- Other debt: $22,000 car loan plus $28,000 student loans, $50,000 total
- Existing life insurance: employer group policy at 1x salary, $105,000
- Liquid savings (not retirement): $60,000
Your ages, income, debts, and existing coverage will change every result. That's the point of running the calculation instead of trusting a rule of thumb.
Why the 10x Shortcut Misses
Ten times salary is easy to remember: $105,000 × 10 = $1,050,000. It's a reasonable starting guess, but it ignores four things:
- How long your family needs the income. A parent of a 4-year-old and a 7-year-old has a much longer runway than a parent of two teenagers.
- Your mortgage size. A $360K balance and a $120K balance produce different needs at the same salary.
- Kids' education costs. These are a lump sum that arrives on a schedule, not a salary multiple.
- What you already own. Employer coverage and savings reduce the gap.
The DIME method fixes this. DIME stands for Debt, Income, Mortgage, Education. For a deeper walkthrough on a similar family, see how the DIME method calculates a $1.4M need on a $380K mortgage.
The DIME Calculation, Line by Line
D: Debt = $50,000
Add up non-mortgage debts that would land on your spouse: the $22,000 car loan and $28,000 in student loans. (Check your loan terms. Some federal student loans are discharged on death and some private loans are not.)
I: Income = about $1,012,000
This is the line most calculators hide. Here's the transparent version.
- Income to replace: you don't need 100% of your salary. Taxes and your own personal spending disappear. I'll assume the family needs 75%, or $105,000 × 0.75 = $78,750 per year.
- Years to replace: 15 years, which gets your youngest to about age 19.
- Present value: you don't need $78,750 × 15 = $1,181,250 today, because the money can earn a return while it's being spent. I'll assume a conservative 2% return above inflation.
The formula: annual income × (1 − 1.02⁻¹⁵) ÷ 0.02
That works out to $78,750 × 12.85 = about $1,012,000.
If you assume a 0% real return, the number rises to $1.18M. If you assume 4%, it falls to about $876K. Small assumptions move this line more than anything else, which is why online calculators disagree.
M: Mortgage = $360,000
Pay it off, and your spouse's monthly housing cost drops sharply. If you'd rather your spouse keep a 6.5% loan and invest the difference, you could size this line smaller. I'm keeping it simple: $360,000.
E: Education = $120,000
I'm assuming $60,000 per child, roughly four years at an in-state public university. Private school, graduate school, or a family that expects to fund nothing would each change this. Enter what you actually plan to do.
Adding the Costs Calculators Skip
Most DIME calculators stop at four letters. Real life adds three more lines, and I've included them as labeled assumptions:
| Extra line | Example amount | Why it's there |
|---|---|---|
| Final expenses | $15,000 | Funeral and estate-settlement costs |
| Transition fund | $40,000 | Months of reduced hours and childcare ramp-up for the surviving parent |
| Home emergency reserve | $20,000 | A deductible or uninsured repair while the household is in upheaval |
Why the last two matter. Take a few news items from this week's Insurance Journal:
- The Boring Co. tunnel: Musk said his company is working on a tunnel to link Austin and San Antonio because that journey "can currently take up to 2.5 hours" in traffic. If you live in a corridor like that, ask what your spouse's commute does to their ability to add hours or handle school pickups alone. That's a real cost the transition fund covers.
- Texas wildfire plans: According to Most Texas Utility Companies Not Providing Wildfire Response Plans, only eight of 160 utilities operating in fire-prone areas had complied with the wildfire law. Life insurance pays off a mortgage. It doesn't rebuild a house. If your home is in a higher-risk area, review your homeowners policy on its own, and keep a cash reserve so a property problem doesn't become a life insurance problem.
- Contractor fraud: Missouri Contractor Faces $180K Judgment Over Fraudulent Home Repairs reports a restitution judgment of more than $180,000 and 12 felony counts. That's one case in one state, but it's a fair reminder that repair decisions made in a hurry, by an overwhelmed person, are where mistakes happen. A reserve gives your spouse room to get multiple bids.
None of these stories is about life insurance. They are the kind of financial friction a grieving household hits, and that's why a buffer belongs in your number.
The Total, and What You Already Own
| Line | Amount |
|---|---|
| Debt | $50,000 |
| Income (15 yrs, present value) | $1,012,000 |
| Mortgage | $360,000 |
| Education | $120,000 |
| Extras (final, transition, home) | $75,000 |
| Gross need | $1,617,000 |
| Less: employer group life | −$105,000 |
| Less: liquid savings | −$60,000 |
| Net coverage gap | $1,452,000 |
So the answer for this family is roughly $1.45M, versus $1.05M from the shortcut. A gap of about $402,000 is the difference between "we'll manage" and "we'll have to sell the house."
The employer policy is the sneaky part. Group coverage usually ends when you leave the job, and a $105,000 benefit feels like protection while covering only about 6% of the gross need. For more on that trap, see why a $170K employer policy doesn't fill a $1.4M gap.
This is the kind of analysis Morivex runs for you, so you don't have to build the spreadsheet yourself.
Your Need Shrinks Every Year (That's the Good News)
Do you really need the same coverage when your kids are 25 as when they're 5? No. Watch what happens to each DIME line over time, using the same family:
| Point in time | Income remaining (PV) | Mortgage balance | Education | Debt | Extras | Gross need |
|---|---|---|---|---|---|---|
| Today (kids 4 & 7) | $1,012,000 | $360,000 | $120,000 | $50,000 | $75,000 | $1,617,000 |
| Year 5 (kids 9 & 12) | $707,000 | $326,000 | $120,000 | $20,000 | $75,000 | $1,248,000 |
| Year 10 (kids 14 & 17) | $371,000 | $279,000 | $120,000 | $0 | $75,000 | $845,000 |
| Year 15 (kids 19 & 22) | $0 | $214,000 | $0 | $0 | $35,000 | $249,000 |
By year 15, the need has fallen by about 85%, before counting savings that should be growing. That's a lot of coverage you're not obligated to keep paying for.
Premiums rise with age because the statistical chance of a claim rises with age. Buying the coverage you need now, while you're young and healthy, locks in the lowest rate for that term. It also means you don't have to keep paying for coverage you'll no longer need.
One Big Policy vs. a Ladder
Since the need declines, one $1.45M 30-year policy means paying for coverage you won't need in years 15 through 30. Laddering means buying several term policies with different lengths so coverage steps down as your obligations do.
Here's an example ladder matched to the table above. The premium rates are illustrative assumptions for a healthy nonsmoker in his mid-30s, not real quotes:
| Approach | Coverage | Assumed annual rate per $1,000 | Year-1 cost | 30-year total paid |
|---|---|---|---|---|
| One 30-year policy | $1,450,000 | $1.40 | $2,030 | $60,900 |
| Ladder: 10-year layer | $450,000 | $0.55 | $248 | $2,475 |
| Ladder: 15-year layer | $500,000 | $0.70 | $350 | $5,250 |
| Ladder: 20-year layer | $500,000 | $0.90 | $450 | $9,000 |
| Ladder total | $1,450,000 → $1,000,000 → $500,000 → $0 | $1,048 | $16,725 |
Under these assumptions, the ladder costs about $87 a month versus $169 a month, and saves roughly $44,000 over 30 years. Your rates will differ. Health class, tobacco use, and carrier all move them, so get real quotes.
The tradeoffs matter, so here they are honestly:
- Laddering works if your need really falls. If a child has special needs, or you'd like to leave a permanent legacy, a 30-year (or permanent) policy may be the better answer.
- Whole life answers a different question. It's designed for lifelong needs like estate liquidity. It isn't "wrong," but it costs far more per dollar of death benefit than term, so buying a whole life policy sized to your budget often leaves you underinsured. See the 30-year cost comparison of term, whole life, and universal life at 35 for the full numbers.
- Layers can be adjusted. The mechanics are covered in how three term policies instead of one save a 35-year-old family $11,000.
You can model your own ladder and see when each layer should expire at Morivex.
What About the Exam?
Underwriting is becoming faster and more data-driven across insurance. Tech Update: Mosaic Launches AI-Enabled Digital Underwriting System for SMEs describes Mosaic's HALO system, built to bring complex specialty products to small and midsize businesses more quickly. That's a commercial-insurance story, and I'm not claiming life carriers work the same way. But it points the same direction: the friction of applying is shrinking, so "I'll do it when I have time" is a weaker excuse every year.
Speed isn't the whole story, though. Your health class, and whether you take an exam or a no-exam route, can change the price materially. To see the tradeoff, read how the underwriting path saves $46,000 on a $1M term policy at 43.
A Note on Roots
One more Insurance Journal item, Scientists Researcher Deeper-Rooted Crops to Combat Climate Change, describes researcher Ashish Rajurkar lifting soil from a soybean plant whose roots go straight down instead of out to the side. I'll borrow the image. Most people size coverage like shallow roots, wide and thin: a number spread across everything. A good needs analysis goes deep on the few obligations that matter most (the mortgage, the income runway, the kids' education) and ignores the rest.
Recalculate Your Own Number: A 10-Minute Checklist
Grab a pen and do this tonight:
- Debt: total every non-mortgage loan your spouse would inherit.
- Income: multiply your gross pay by 70 to 80%, then pick the number of years until your youngest is independent. Discount at 1 to 3%.
- Mortgage: find your current payoff balance, not the original loan.
- Education: decide what you actually want to fund per child.
- Extras: add final expenses, a transition fund, and a home reserve.
- Subtract employer coverage (and ask whether it follows you if you leave) and liquid savings.
- Re-run it after any life event: a baby, a refinance, a raise, a divorce, a new debt.
If your result is more than double your current coverage, you're in the same position as the family above. If it's far lower, you may be paying for more than you need. Both are worth knowing.
Your Numbers Will Be Different
Every figure in this post is an example, built on assumptions I labeled along the way. A single-income family with a $200K mortgage, a two-earner household with no kids, and a parent with a child who'll need lifelong support each get a different answer from the same formula. That's why one number from a website, or one number from an agent, shouldn't settle it.
If you want your own DIME calculation, with your income, debts, existing coverage, and a ladder that steps down as your obligations do, run it at Morivex. It takes the spreadsheet work off your plate, shows every line so you can check the reasoning, and has no commission behind it. Protecting your family is one of the most loving things you can do with a spreadsheet. Do it once, do it right, and update it when your life changes.
Sources
- Tech Update: Mosaic Launches AI-Enabled Digital Underwriting System for SMEs — Insurance Journal
- Missouri Contractor Faces $180K Judgment Over Fraudulent Home Repairs — Insurance Journal
- Scientists Researcher Deeper-Rooted Crops to Combat Climate Change — Insurance Journal
- Most Texas Utility Companies Not Providing Wildfire Response Plans — Insurance Journal
- Musk’s Boring Co. Working on Tunnel to Link Austin and San Antonio — Insurance Journal