Free Life Insurance Tool
Life Insurance Calculator: Estimate Your Coverage Gap
Enter your income, debts, mortgage, education goals and existing coverage to estimate how much life insurance your family may need, using the DIME method and the income replacement method side by side.
- The DIME method adds debts, income, mortgage and education costs.
- The income replacement method focuses on replacing your paycheck for a set number of years.
- Subtract existing coverage and savings to find your coverage gap.
- Work coverage often ends when you leave a job, so consider leaving it out.
Table of Contents
This life insurance calculator puts two common methods side by side, the DIME method and a plain income replacement estimate, then subtracts the coverage and savings you already have to show your coverage gap. Enter today’s numbers, press Calculate, and you get a rounded coverage amount you can take to a quote. Nothing you type leaves your browser.
Life insurance calculator
Use today’s dollars. Leave a box blank if it does not apply; blanks count as $0. Commas and dollar signs are fine.
How to use this life insurance calculator
The life insurance calculator above works best if you gather a few numbers first: your most recent pay stub or tax return, a current mortgage statement, the balances on any car, student, or credit card debt, and your benefits summary from work. Then fill in each box in today’s dollars.
- Annual income to replace. This is the money your family would lose each year if you died. Many people use gross pay; others use take-home pay because taxes and retirement contributions stop at death. Either is fine as long as you are consistent.
- Years of income to replace. Pick the number of years your household would need help. A common choice is the number of years until your youngest child finishes school, or until your spouse reaches retirement age.
- Mortgage balance and other debts. Use payoff balances, not the original loan amounts.
- Final expenses. The box starts at $10,000 as a planning placeholder. Replace it with your own estimate if you have one. Our guide to funeral costs in Massachusetts walks through what drives that number.
- Education. Enter what you want to set aside per child and how many children you are planning for.
- What you already have. Add your group coverage from work, any personal policies, and the savings your family could actually spend.
Press Calculate. The results show both methods in one table, your coverage gap under each one, and a suggested amount rounded up to a figure carriers commonly quote. If something looks off, change one input at a time and recalculate to see which line moves the result.
DIME method vs. income replacement: why the calculator shows both
Most online tools give you one number. This life insurance calculator gives you two on purpose, because the two methods answer different questions.
The DIME method adds up four buckets: Debt, Income, Mortgage, and Education. In this tool, final expenses are counted in the debt bucket. The DIME method asks: “What would it take to pay everything off and still replace my paycheck?” It tends to produce the higher number.
The income replacement approach counts only the income your household would lose for the years you choose, plus final expenses. It assumes your family keeps paying the mortgage, loans, and future tuition out of that replaced income, the same way they do now. It answers: “What keeps the household running as it does today?”
| Question | DIME | Income only |
|---|---|---|
| What it counts | Debts, final expenses, income for chosen years, mortgage, education | Income for chosen years plus final expenses |
| Mortgage after a death | Paid off in full | Kept, paid from replaced income |
| Typical result | Higher | Lower |
| Good fit when | You want the house and debts cleared | You want monthly life to continue unchanged |
Neither is wrong. The gap between the two numbers is the price range worth quoting. Many families land somewhere in between, for example by covering the mortgage in full but replacing fewer years of income.
How the life insurance calculator does the math
Here is every formula the life insurance calculator uses, so you can check it by hand.
- Income portion = annual income x years. If you enter an optional inflation rate, each later year is raised by that rate before the years are added together (year 1 at today’s income, year 2 at income x (1 + rate), and so on).
- DIME total = other debts + final expenses + income portion + mortgage + (education per child x number of children).
- Income-only total = income portion + final expenses.
- Resources = group coverage + personal coverage + savings and investments. If you tick the box to leave out work coverage, group coverage counts as $0.
- Coverage gap = total minus resources, never less than $0.
- Suggested amount = the DIME gap rounded up: to the next $10,000 under $100,000, the next $25,000 under $500,000, and the next $50,000 above that.
No investment growth. The tool does not assume the payout is invested. That keeps it simple and errs on the side of more coverage, because real families often keep a death benefit in cash or low-risk accounts at first.
No inflation unless you add it. By default, every number stays in today’s dollars. The optional inflation box only raises the income portion. It does not raise tuition, final expenses, or debts, which are entered as you expect them to be.
Hypothetical example: a two-child household
This is a hypothetical example to show how the numbers move. It is not a quote or a recommendation for any real person.
Imagine a 38-year-old parent in Massachusetts earning $85,000 a year who wants to replace 10 years of income. The household has a $300,000 mortgage balance, $18,000 in car and card debt, two children with $40,000 set aside as the education goal for each, $170,000 of group coverage at work, no personal policy, and $30,000 in savings. Final expenses stay at the $10,000 default.
| Line item | DIME | Income only |
|---|---|---|
| Other debts | $18,000 | not counted |
| Final expenses | $10,000 | $10,000 |
| Income ($85,000 x 10) | $850,000 | $850,000 |
| Mortgage | $300,000 | not counted |
| Education ($40,000 x 2) | $80,000 | not counted |
| Total need | $1,258,000 | $860,000 |
| Minus coverage and savings | -$200,000 | -$200,000 |
| Coverage gap | $1,058,000 | $660,000 |
The calculator would suggest $1,100,000 and a range to price of $700,000 to $1,100,000. If this parent ticks “leave out my work coverage,” the DIME gap becomes $1,228,000 and the suggestion rises to $1,250,000. That one checkbox shows how much the household leans on a benefit tied to one employer.
Counting existing coverage and savings honestly
The gap is only as accurate as the “what you already have” section. Three habits help.
- Treat work coverage as temporary. Group life usually ends or must be converted when you leave the job. Our guide to group life and health insurance explains conversion and portability. Run the tool both ways to see your exposure.
- Count only spendable savings. Money earmarked for retirement, an emergency fund, or a down payment may not be available to your family without penalties or trade-offs.
- Do not double count. If a personal policy is assigned to pay a specific loan, leave that loan out of the debts box or leave that policy out of resources, not both.
The National Association of Insurance Commissioners suggests asking whether you have alternatives to life insurance, such as savings or other investments, and how many people depend on you financially (NAIC, Tips for Buying Life Insurance). The resources section is where those answers go.
What this life insurance calculator does not account for
A simple tool leaves things out. Before you treat the result as final, think about these:
- Social Security survivor benefits. These can reduce how much income your family needs to replace. Our guide on sizing your coverage covers how survivor benefits fit in.
- A non-earning spouse’s work. Child care, transportation, and running a household cost money to replace. Enter that cost as “income” for a stay-at-home parent.
- Taxes and estate costs. Larger estates may have tax or settlement costs the tool does not estimate.
- Health, age, and price. The result is an amount, not a premium. What you pay depends on underwriting.
- Changing needs. The NAIC suggests reviewing your life insurance program with your agent or company every few years. A new baby, a refinance, or a raise all change the answer.
Not having enough is common. LIMRA reports that 74 million Americans lack life insurance but say they need it, and another 25 million recognize they are underinsured (LIMRA, 2025 Insurance Barometer webinar). Running the numbers is the first step out of that group.
Turning your coverage gap into a policy
Once you have a number, the next question is what kind of policy fills it. A gap that shrinks over time, like income during child-rearing years or a mortgage, often matches term life insurance, which covers a set number of years at a lower starting cost. A need that lasts your whole life, such as final expenses or leaving a set amount to heirs, often matches whole life insurance. Our term vs. whole life comparison lays out the trade-offs.
Some households split the gap: a larger term policy for the income replacement years and a smaller permanent policy for final expenses. If your mortgage is the biggest worry, our mortgage protection insurance guide explains the options. If you have health conditions, our guide to coverage with pre-existing conditions explains which application paths are commonly available.
Life insurance calculator: frequently asked questions
Which number should I use, DIME or income replacement?
Use the DIME method if you want the mortgage and debts paid off in full. Use income replacement if your family would keep the house and keep making payments. If you are unsure, quote both and compare the monthly price difference.
Should I enter gross or take-home income?
Either works. Take-home pay gives a leaner number because taxes and retirement savings stop at death. Gross pay builds in a cushion. Pick one and use it consistently when you rerun the life insurance calculator.
Why does the calculator ignore investment returns?
Returns are uncertain, and families often keep a payout in cash at first. Leaving growth out errs toward more coverage. You can add a modest inflation rate if you want later years of income to reflect rising costs.
What if my coverage gap is $0?
Your current coverage and savings meet the estimate. Run it again with work coverage left out. If a gap appears, that is the amount at risk if you change jobs.
Does the calculator save or send my information?
No. The math runs in your browser. Nothing is stored, and nothing is sent to Octans or anyone else.
How often should I rerun it?
After any major life change, such as marriage, a child, a home purchase, a divorce, or a job change, and every few years otherwise.
Checklist before you request quotes
- Run the life insurance calculator with and without work coverage.
- Write down both your DIME method and income replacement gaps.
- Choose a term length that matches the years of income you want to replace.
- Gather your benefits summary showing current group coverage.
- List current medications, doctors, and diagnosis dates.
- Decide who your beneficiaries are, including contingent beneficiaries.
- Keep existing coverage in force until any new policy is approved.
How Octans can help with your coverage gap
Octans Insurance is an independent agency based in Massachusetts. Our licensed agents compare coverage from more than 120 carriers, so once you know your number, we can show how term, whole life, or a mix would price for your age and health. A calculator gives you a starting number; an agent can tell you what that number actually costs and which carriers are likely to look favorably on your application. There is no obligation, and you can use the result from this page as the starting point. Call (617) 935-9220 or request quotes online.
Keep Reading: Related Guides
Important: Octans Insurance agents are licensed in the states in which they operate. Coverage availability and rates may vary by state. Premium examples, when provided, are illustrative samples from published sources, not quotes. Final rates are determined by the insurance carrier based on underwriting and applicable policy criteria. Policy terms, exclusions, limitations, riders, and availability vary by carrier and state.
About examples and tools: Hypothetical examples, sample rates, calculators and quizzes on this site are for general educational and illustrative purposes only. They are not quotes, offers of coverage, or guarantees of eligibility, approval, price or benefits, and they are not legal, tax, financial or medical advice. The insurance company decides eligibility and price; Medicare rules are set by CMS and the Social Security Administration.
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(617) 935-9220 | life@octansinsurance.com