Guides
How life insurance premiums are calculated
Insurers price life insurance from expected claims, investment earnings, expenses and lapses, then adjust for your age, health and policy type.
A life insurance premium is built from four pieces: the insurer's estimate of how many people like you will die, what it earns by investing premiums until claims are paid, what it costs to sell and run the policy, and a margin for profit and for being wrong. Your age, health, tobacco use, sex, coverage amount and policy type mostly change the first piece, the expected claims. The product's design then decides how the total is spread over the years you will pay it.
The four building blocks
1. Expected claims (mortality). An actuary estimates, for each age and risk profile, the share of policyholders who will die in each year of the policy. Insurers start from industry mortality tables and adjust them with their own claims experience and with data from their reinsurers. Regulators also set a minimum mortality standard for the reserves an insurer must hold and the minimum cash values of permanent policies: the 2017 CSO table has applied to policies issued on or after January 1, 2020. That table is a regulatory floor, not a price list.
2. Investment earnings. Premiums arrive before claims are paid, sometimes decades before, and the insurer invests the difference, mostly in bonds. Higher expected earnings mean a lower premium for the same promise, which is why long-lasting policies react most to interest rates. See how interest rates affect life insurance prices for how rates move prices.
3. Expenses. Selling a policy costs money: the agent's commission, the medical exam and lab work, database checks, issuing the contract, annual administration, and premium taxes paid to the state. Most of these costs land in the first year, which is one reason a new policy is far more expensive for the insurer than a mature one. Our guide to how life insurance agents are paid covers how agents are paid.
4. Persistency and margin. Pricing also assumes how many people will stop paying and walk away. This is lapse-supported pricing. The Society of Actuaries studied 25 companies' level-term policies and found that when premiums jump after the level period, 27% to 96% of policyholders lapse, and those who keep paying die at far higher rates than they did during the level period. Insurers price for that. On top comes a margin for profit, for the cost of the capital regulators make them hold, and for the chance that actual claims run worse than expected.
A hypothetical example: from claims to premium
The numbers below are invented to show the arithmetic. They are not market prices.
Say an insurer sells $500,000, 20-year policies to 10,000 healthy 35-year-old nonsmokers, and its actuaries expect 1 in 1,000 of them to die in the first year.
- Expected deaths: 10 out of 10,000
- Expected claims: 10 x $500,000 = $5,000,000
- Claims cost per policyholder: $5,000,000 / 10,000 = $500 for the year, about $42 a month
That $500 is the bare cost of the risk. The insurer then subtracts the investment income it expects to earn, adds commissions, underwriting and administration costs, premium taxes and a profit margin, and adjusts for the lapse rate it expects. The real result differs for every company, which is why quotes for identical coverage vary.
Why a level premium costs more than your risk in the early years
Mortality rises with age. The Social Security Administration's 2023 period life table implies that a man aged 35 has about a 3.1% chance of dying within 10 years, against about 7.2% at age 50. (That is the general population; insured people, who have passed underwriting, die less often.) If an insurer charged each year's true risk, a 20-year policy would start very cheap and end very expensive.
A level premium smooths this out. You pay more than the risk costs in the early years, and the insurer holds the surplus, invests it as a reserve, and uses it to cover the shortfall in the later years. A simplified view, again hypothetical:
| Policy year | Cost of that year's risk | Level premium | Difference |
|---|---|---|---|
| 1 | $400 | $700 | $300 surplus held in reserve |
| 10 | $650 | $700 | $50 surplus |
| 20 | $1,100 | $700 | $400 shortfall, paid from reserves |
This is also why people who drop a level policy in the middle lose value even in term insurance: they paid in the surplus years and leave before the shortfall years.
What changes your price
| Factor | How it enters the math |
|---|---|
| Age | Older applicants have higher mortality and fewer years to build reserves. Many insurers use age nearest birthday, so a birthday can matter. |
| Health and family history | Drives your rate class. Each class assumes a different death rate. |
| Tobacco and nicotine | Separate, higher rates for users, since their expected mortality is higher. |
| Sex | Women live longer on average, so they pay less. See why women pay less for life insurance. |
| Coverage amount | Larger policies usually cost less per $1,000 because fixed costs, such as issuing the policy, are spread across more coverage. |
| Length of term | A longer level period means more years of rising risk averaged into one premium. |
| Policy type | Permanent policies charge enough to pay out whenever you die and build cash value, so they cost much more than term for the same death benefit. |
| Underwriting method | Policies with no exam or fewer health questions usually cost more. The NAIC's 2026 Life Insurance Buyer's Guide says a policy that doesn't require detailed health information will usually cost more and provide less coverage than one that does. |
| Payment mode | Paying monthly instead of annually typically adds a modal charge. See paying life insurance monthly vs annually. |
The Texas Department of Insurance puts the basics plainly in its life insurance guide: the cost depends on age, health and risk factors, and a company can charge more for health conditions, smoking or risky hobbies like skydiving. For the detail behind each factor, see what affects the cost of life insurance.
Premiums that are guaranteed and premiums that are not
How firmly the price is set depends on the product.
- Level term: the premium is fixed for the level period, then usually jumps. The Society of Actuaries found first renewal-year premiums can be as high as 10, 20 or even 30 times the level premium. See renewing term life insurance after the level period ends.
- Whole life: the premium is generally fixed for life, according to the Texas Department of Insurance, which says whole life premiums usually don't go up.
- Universal life: the policy deducts a monthly cost of insurance charge from its cash value, and the insurer can raise that charge within the policy's stated maximum. The NAIC buyer's guide warns that premiums on many policies are sensitive to the insurer's investment earnings, claims costs and expenses, so you should ask what the highest premium you might have to pay is. See cost-of-insurance increases and guaranteed vs non-guaranteed values in a policy illustration.
Using this when you shop
- Compare like with like. Same death benefit, term length and rate class, or the quotes are not comparable. A worksheet helps keep the comparison honest.
- Ask whether the premium is guaranteed for the whole term, and what it becomes afterward.
- Check the underwriting route. A quote that assumes you qualify for the best class is not a price until the insurer approves you.
- Weigh the payment mode. Ask for the annual premium and the monthly total, and compare them.
- Reduce what you can control. Quitting tobacco, improving blood pressure and shopping across insurers all move the result; see ways to lower your life insurance premiums.
Key takeaways
- A premium covers expected death claims, minus investment earnings, plus commissions, underwriting and administrative costs, premium taxes and a profit and risk margin.
- Your age, health, tobacco use, sex, coverage amount and policy type change the expected-claims piece, so they drive your price.
- A level premium overcharges early and undercharges late; the insurer holds the early surplus in reserve to pay for the later years.
- Insurers assume some policyholders will drop their coverage, which is why a policy that is kept long can cost more to deliver than its price assumed.
- Always check which parts of a premium are guaranteed; term and whole life are generally fixed, while universal life charges can change.