Guides
Income replacement: the 10x rule and better ways
The 10-times-salary rule is easy but blunt. How to size income replacement properly: net pay, the right number of years and a realistic return.
The income replacement method sizes life insurance as a lump sum big enough to stand in for your paycheck after you're gone. The popular shortcut, 10 times your salary, is a fair gut check for a mid-career parent but misses badly at both ends: it leaves a young sole earner with a newborn underinsured and sells a near-retiree coverage they don't need. A better version replaces your actual contribution to the household, for the specific number of years your family needs it, and accounts for what the money earns while it's being spent.
Why the 10x rule is blunt
A flat multiple treats a 28-year-old with a newborn and a 58-year-old with grown children the same way. It also uses gross salary, ignores debts and college, and ignores a spouse's income and any savings. Here is how it plays out for three hypothetical households.
| Household (hypothetical) | 10x salary | Years of support needed | Rough need ($ of take-home contribution × years) | 10x verdict |
|---|---|---|---|---|
| Age 30, sole earner, $60,000, newborn | $600,000 | 22 | $42,000 × 22 = $924,000 | Too low |
| Age 45, dual income, $90,000, kids 12 and 15 | $900,000 | 9 | $55,000 × 9 = $495,000 | More than enough |
| Age 58, $100,000, kids grown, house nearly paid | $1,000,000 | A few years, if any | Spouse's retirement gap only | Far too high |
The rest of this guide replaces the multiple with five steps.
Step 1: Find the income your family actually loses
Start with gross pay and take out what disappears along with you:
- Income and payroll taxes. The death benefit itself generally isn't taxable income to your beneficiaries, according to the IRS, so replacing gross pay overshoots. Interest the money earns later is taxable.
- Your retirement contributions (the survivor may still want to save for their own retirement; count that separately if so).
- What you spend on yourself: your car, commuting, clothes, meals, hobbies and your share of food.
Then add back anything the family loses that your paycheck didn't show, especially employer health insurance if your job covered the family.
Say Priya, 40, earns $100,000. After roughly $24,000 in taxes, $8,000 of 401(k) contributions and $13,000 of her own spending, her household relies on about $55,000 a year of her income.
Step 2: Choose the number of years
Count until the obligation ends, not until an arbitrary age:
- Until the youngest child turns 18, or finishes college if you want to support them through it
- Until a surviving spouse reaches retirement, if they would struggle to save on one income
- Until the mortgage is paid off, if you are not covering it separately
Priya's youngest is 4, and she wants support through age 22: 18 years. The How long a term do I need? helps you pin this down, and the answer doubles as your term length.
Step 3: Decide how the lump sum will be used
This is where most of the difference between methods comes from. A family can spend the money down over the years or try to live on its earnings forever.
| Approach | Assumption | Priya's number |
|---|---|---|
| Simple multiply | The payout earns about what inflation takes away | $55,000 × 18 = $990,000 |
| Spend-down at a modest real return | Invested to earn 2% a year above inflation, drawn down to zero over 18 years | About $825,000 |
| Capital retention | Family lives on withdrawals of 4% a year and the principal is never deliberately spent | $55,000 ÷ 0.04 = $1,375,000 |
"Real return" means return after inflation. The spend-down figure is the present value of 18 years of $55,000 payments, and it is very sensitive to the assumption: at a 1% real return it rises to about $902,000. Be honest about how your survivors would handle the money. A grieving spouse who parks it in a savings account will earn less than a balanced portfolio. Capital retention costs the most and mostly suits families who want to leave the money intact for the next generation or a dependent who will need support for life.
Your beneficiaries don't have to take a lump-sum payment. Many policies let them choose installments or lifetime income instead; see life insurance payout options: lump sum, installments and annuities.
Step 4: Subtract other income
- A surviving spouse's earnings, if they would keep working.
- Social Security survivor benefits. Unmarried children under 18 (19 if still in high school) can each get up to 75% of the deceased parent's basic benefit, and a surviving spouse caring for a child under 16 can get 75%, subject to a family maximum of roughly 150% to 180% of that benefit, according to the Social Security Administration. A working spouse under full retirement age loses $1 of their own benefit for every $2 earned above $24,480 in 2026 under the earnings test; the children's benefits are not reduced by the parent's wages. Our guide to Social Security survivor benefits and the $255 death payment covers how to estimate the amounts.
- Existing life insurance and savings. Count work coverage with care, since it usually ends with the job; the is my life insurance through work enough? shows what it really covers.
Step 5: Add the one-time needs
Income replacement covers ongoing living costs. Debts, a mortgage payoff, college and final expenses are separate lump sums, which is why the The DIME method for sizing life insurance adds them as their own lines.
Putting it together (hypothetical)
| Item | Amount |
|---|---|
| Income replacement, spend-down at 2% real return | $825,000 |
| Debts and final expenses | $40,000 |
| College help for two children | $100,000 |
| Minus group life through work | −$200,000 |
| Minus savings | −$50,000 |
| Coverage to buy | $715,000 |
Priya's 10x figure would have been $1 million. If she leaves out the group coverage, which she would lose if she changed jobs, her need is $915,000, close to the 10x answer, but now she knows why and can adjust each piece as her life changes.
Keep the number current
A level death benefit loses buying power every year. The inflation and your death benefit shows how much, and some families buy a little extra or a longer term to compensate. Re-run the five steps after a raise, a new child or a move. The How much life insurance do I need? does the arithmetic, including the present-value step.
If you'd rather measure the full economic value of your future earnings instead of what your family needs, see human life value: the economist's way to size coverage. For the full checklist that ties all the methods together, start with How much life insurance do I need?.
Key takeaways
- The 10x rule underinsures young sole earners and overinsures people near retirement.
- Replace your take-home contribution to the household, not your gross salary, since the death benefit generally isn't taxed as income.
- Count years until the obligation ends, and use the same span for your term length.
- How the family will use the money matters: a modest assumed return lowers the need, while living off interest raises it sharply.
- Subtract a spouse's income, Social Security survivor benefits and savings, then add one-time needs like debts and college.