If you already know you want term life insurance, the harder question is usually not “how much coverage” but “how long.” A 10-year term is the cheapest option available, a 30-year term costs the most per month, and a 20-year term splits the difference; picking the wrong one means either paying for years of coverage you don’t need or watching your policy expire while you still do. The short answer: match your term length to the longest financial obligation you’re protecting against, not to the lowest available premium. The rest of this guide breaks down what each length actually costs in 2026, when each one makes sense, and the deadlines and tradeoffs that catch people off guard.
The short version
- For a healthy 40-year-old man buying $500,000 of coverage in 2026, a 10-year term averages about $41 a month, a 20-year term about $59 a month, and a 30-year term about $104 a month.
- A 20-year term is the most commonly purchased length because it tends to match a 30-year mortgage several years into repayment plus the years until children reach adulthood.
- Term life made up 17 percent of new individual life insurance premium in 2025, and policy counts kept growing, according to LIMRA's 2025 sales data.
- Most term policies include a conversion option to switch to permanent coverage without new underwriting, but only within a fixed window, often 10 to 20 years or before age 65 to 70.
- The right length is the one that covers your longest financial obligation, not the one with the lowest monthly payment.
What the “term” in term life actually means
A term life insurance policy pays a death benefit only if you die within a fixed period, the term, and that period is set the day you buy the policy. Common lengths sold today are 10, 15, 20, 25 and 30 years, with a handful of carriers now offering 35- or 40-year terms for younger buyers. During the term, a level policy holds both your premium and your coverage amount steady; nothing changes year to year unless you change it. When the term ends, the policy simply ends, unless you renew it (usually at a much higher annual rate), convert it to a permanent policy, or let it lapse.
That structure is what makes the length decision matter so much. Unlike whole or universal life insurance, which is designed to last your entire lifetime and build cash value along the way, term life is built to answer one question: for how many years do I specifically need this protection? Get the number right and you pay only for the years you actually need. Get it wrong in either direction and you either pay for years of unnecessary coverage or find yourself uninsured right when a need resurfaces.
Term length is not the same as your age
A 20-year term bought at age 35 expires at 55, not at some fixed calendar year. Every quote you see is anchored to your age and health at the moment you apply, which is exactly why "how long do I need this" and "how old will I be when it matters" are really the same question.
What 10, 20 and 30 year term actually cost in 2026
Before deciding which length fits your situation, it helps to see the real dollar gap between them. The table below reflects a healthy, nonsmoking applicant buying $500,000 of coverage, using MoneyGeek’s 2026 carrier-sampled rate data.
| Term length | Age 30 — Women | Age 30 — Men | Age 40 — Women | Age 40 — Men | Age 50 — Women | Age 50 — Men |
|---|---|---|---|---|---|---|
| 10-year | $24 | $29 | $34 | $41 | $70 | $90 |
| 20-year | $31 | $38 | $47 | $59 | $102 | $137 |
| 30-year | $52 | $64 | $82 | $104 | $196 | $269 |
Source: MoneyGeek 2026 term life insurance rate data (10-year updated June 10, 2026; 20-year updated June 9, 2026; 30-year updated May 29, 2026), based on samples of quotes across major carriers.
Average monthly premium at age 40, healthy male nonsmoker — $500,000 coverage
Source: MoneyGeek 2026 term life rate data. Illustrative averages, not a quote — your premium depends on health, build, and the carrier.
Look at the age-40 male column and the pattern is stark: moving from a 10-year to a 20-year term adds about $18 a month, but moving from a 20-year to a 30-year term adds about $45 a month, roughly two and a half times the earlier jump. That is not a coincidence of this particular data set. It reflects two compounding effects: the extra years of coverage themselves, and the fact that a 30-year policy holds a rate through your 60s and 70s of statistical mortality risk that a 20-year policy never has to price in.
A 10 to 20 percent female discount holds across every length
At every term length and every age in the table above, women pay noticeably less than men, generally 15 to 25 percent, reflecting a longer average life expectancy. That gap is present in 10-year, 20-year and 30-year pricing alike; it is not specific to any one term length.
10-year term life insurance: cost and fit
A 10-year term is the least expensive option on a monthly basis and the shortest commitment. For a healthy 40-year-old, MoneyGeek’s 2026 data shows an average of $41 a month for a man and $34 a month for a woman on $500,000 of coverage.
| Age | Women | Men |
|---|---|---|
| 30 | $24 | $29 |
| 40 | $34 | $41 |
| 50 | $70 | $90 |
Source: MoneyGeek, 10-Year Term Life Insurance Policy Rates, updated June 10, 2026.
A 10-year term fits a narrow but real set of situations: bridging a short-term loan, covering the last stretch of a mortgage, protecting income during the specific years before a pension or retirement account vests, or filling a temporary gap while a longer policy is underwritten. Its biggest risk is the mirror image of its low price: ten years passes quickly, and if your need is still there when it expires, you will be re-shopping at an older age and possibly a changed health status, with no guarantee the next policy prices as favorably.
20-year term life insurance: cost and fit
The 20-year term is the length most people land on, and the data explains why. At age 40, MoneyGeek’s 2026 sample shows an average of $59 a month for a healthy man and $47 a month for a healthy woman on $500,000 of coverage, a meaningful step up from 10-year pricing but far below 30-year pricing.
| Age | Women | Men |
|---|---|---|
| 30 | $31 | $38 |
| 40 | $47 | $59 |
| 50 | $102 | $137 |
Source: MoneyGeek, 20-Year Term Life Insurance Rates, updated June 9, 2026.
Twenty years is long enough to cover the highest-risk window most families actually face: a mortgage several years into a 30-year amortization schedule, plus the span from a young child’s early years through high school or the start of college. NerdWallet’s guidance on term length selection describes the 20-year term as the most commonly chosen length for exactly this reason, it tends to line up with both anchors at once without paying for a decade of coverage most buyers won’t need by the time it would apply.
30-year term life insurance: cost and fit
A 30-year term costs the most per month of the three, but it locks in a rate for the longest stretch, which matters if your obligations genuinely run that long. At age 40, the same $500,000 policy averages $104 a month for a man and $82 a month for a woman, according to MoneyGeek’s May 2026 data.
| Age | Women | Men |
|---|---|---|
| 30 | $52 | $64 |
| 40 | $82 | $104 |
| 50 | $196 | $269 |
Source: MoneyGeek, 30-Year Term Life Insurance Premiums, updated May 29, 2026. A 40-year-old woman's premium rises from $82 to $196 by age 50, a 139 percent increase in one decade of aging into the policy's later renewal-equivalent risk pool.
A 30-year term suits buyers in their late 20s or early 30s who took out a fresh 30-year mortgage, plan to have children who won’t be financially independent for three decades, or simply want one policy that carries them from early career through the years just before a typical retirement age, without ever having to requalify at a higher age and possibly worse health. The tradeoff is monthly cost today in exchange for rate certainty decades out; for a buyer in their 40s or 50s, that same 30-year lock-in prices in enough additional mortality risk that the monthly gap over a 20-year term becomes hard to ignore.
How your health class interacts with the length decision
Term length and health classification are usually discussed as separate topics, but they compound. A carrier’s underwriting places you into a health class, commonly preferred plus, preferred, standard plus, standard, or a substandard table rating, and that class multiplies against the base rate for whatever length and coverage amount you request. A 40-year-old man in preferred-plus health buying a 30-year term may still pay less in total than a 40-year-old man in a standard health class buying a 20-year term, because the health-class gap can be larger than the length gap. That matters for the length decision itself: if a manageable health condition is likely to push you into a lower class now, locking in a longer term at today’s classification can be worth more than the extra monthly premium suggests, since a future re-application at an older age carries both a higher base rate and a fresh chance of landing in a worse health class than you’re in today.
The reverse is also true. Someone in excellent health with no reason to expect a future change can reasonably favor a shorter term and re-apply later, since a fresh application at a favorable class, even at an older age, may not cost meaningfully more than carrying extra years of coverage never used. Neither approach is automatically right; it depends on how stable you expect your health and family history to remain over the length of term you’re weighing, which is a conversation an independent advisor comparing several carriers’ underwriting guidelines can walk through with real numbers rather than assumptions.
A family history factor can tip the decision toward a longer term
If close relatives have a history of a hereditary condition that tends to appear in midlife, that alone is a reason some buyers choose to lock in a 30-year term at their current, healthier classification rather than gamble on qualifying for the same class again in 20 years.
The four-question method for picking your length
Rather than guessing, work through four questions and take the longest answer among them. That number, rounded up to the nearest standard term length, is your target.
When is your mortgage paid off?
Count the years remaining on your current mortgage, not the original loan term. A 30-year mortgage eight years in has 22 years left, not 30.
When is your youngest child financially independent?
Most people use age 18 or the expected end of college, often 22, as the milestone. Count years from now to that birthday.
When do you expect to retire?
If your family depends on your income, count years until the age you realistically expect retirement savings and other income sources to replace it.
Do you have a business or loan obligation with a fixed end date?
Business loans, buy-sell agreements, or co-signed debt each carry their own payoff horizon that may exceed your personal obligations.
Take the largest of the four numbers. NerdWallet’s term-length guidance recommends rounding up to the next standard length rather than down, so a mortgage with 17 years left points to a 20-year term, not a 15-year term, since running even one year short defeats the purpose of buying the coverage in the first place.
The cheapest policy that expires two years before you need it isn't cheap. It's the same as not buying one, at the exact moment it mattered most.
Mike Moore, Life Insurance AdvisorLaddering: using more than one term length together
Some buyers don’t have a single financial obligation, they have several, stacked at different lengths. A 20-year-old mortgage balance, a 12-year runway until the kids are grown, and a 30-year horizon on a business loan are three different numbers, not one. Laddering addresses this by buying two or more term policies of different lengths and face amounts instead of one large policy sized to the longest need.
Single 30-year term for the full need
- $750,000 of coverage, 30-year term, priced for the full amount every year
- Pays 30-year premium rates even after the mortgage is paid off and kids are grown
- Simpler to manage, one policy and one bill
Higher total premiumFull face amount priced at 30-year rates for three decades
Three policies sized to shrinking need
- $250,000 for 10 years, $250,000 for 20 years, $250,000 for 30 years
- Total coverage starts at $750,000 and steps down as obligations end
- Lower combined premium because less face amount is priced at the longest, most expensive term
Lower total premiumOnly the amount still needed is priced at 30-year rates
Laddering is not automatically the right move for everyone. It adds more paperwork, more policies to track, and it only saves money when your need genuinely shrinks over time in a predictable way, a mortgage amortizing down, children aging out of dependency, a business loan on a fixed payoff schedule. Someone whose income-replacement need stays flat for the full period, for example a single long-term obligation like a permanent dependent, may be better served by one policy sized correctly from the start.
The conversion deadline hiding inside most term policies
Many term policies include a conversion option: the right to convert some or all of the death benefit to a permanent policy without a new medical exam or fresh underwriting. It is one of the most valuable, and most overlooked, features in a term contract, because it protects you if your health changes before you know you’ll want permanent coverage.
The catch, according to Northwestern Mutual’s 2026 guidance on term conversion, is that conversion rights almost always carry a deadline: often a set number of years into the policy, or an age cutoff commonly set at 65 or 70, and the specific window varies by carrier and by product. Miss it, and the conversion right disappears permanently, regardless of what has happened to your health in the meantime.
Check your specific conversion deadline before you need it
Your policy's illustration or contract will state the exact conversion window. Northwestern Mutual's guidance recommends reviewing it years before the term ends, not when it's about to expire, since converting earlier generally means a lower permanent premium because it is still based on your age at the time of conversion, not your age when the term is about to run out.
A 30-year term’s extra years of coverage are one form of insurance against a health change; a term’s conversion option is another, quieter form of the same protection, letting you lock in insurability itself rather than only a rate.
What happens if you outlive your term policy
Most term life insurance is designed to do exactly one of two things: pay a death benefit, or expire having paid nothing. Unless your policy specifically includes a return-of-premium rider, which costs meaningfully more in exchange for refunding your premiums if you outlive the term, a standard level term policy simply lapses on its expiration date. There is no refund, no residual value, and no automatic renewal at the original rate.
If your need for coverage is still present when the term ends, whether because you took on new debt, had another child, or simply didn’t reassess in time, you have three realistic paths: apply for a brand-new policy at your current age and health (likely at a meaningfully higher rate than your original policy, and subject to full underwriting), use a conversion option if one still exists and hasn’t expired, or in rare cases pay a very high renewal premium the original policy allows for a limited number of years past the level term. None of these are as favorable as having chosen a slightly longer original term when you first bought the policy.
17%
Share of new individual life premium from term policies in 2025
3
Standard term lengths most carriers offer: 10, 20 and 30 years
65–70
Typical age cutoff for a term conversion option
~76%
How much more a 30-year term costs than 20-year at age 40, per MoneyGeek 2026 data
Sources: LIMRA 2025 individual life sales data; Northwestern Mutual term conversion guidance; MoneyGeek 2026 term rate data.
How South Dakota shopping compares
Term life pricing itself is national, not state-specific: the mortality tables behind the rates above apply the same whether you live in Sioux Falls or anywhere else, so the age and gender figures in this article hold across South Dakota. What does vary by state is the regulatory backstop underneath the policy, along with the practical mix of housing and family finances that shapes which length local buyers actually need. South Dakota’s homeownership rate and mortgage terms track close to the national pattern, which means the same four-question method, mortgage payoff, children’s ages, retirement timeline, and any fixed business obligation, applies here without adjustment. South Dakota requires every life insurance policy sold in the state to carry a free-look period of at least 10 days, during which a new policyholder can cancel for a full refund if the policy isn’t what they expected. If a carrier were ever to become insolvent, the South Dakota Life and Health Insurance Guaranty Association protects policyholders in good standing for up to $300,000 in death benefit.
Term life’s growing popularity nationally, 17 percent of new individual premium and rising policy counts in 2025 per LIMRA, also shows up locally in the same pattern this site has covered before: South Dakota buyers increasingly compare offers through an independent agent working with multiple carriers, rather than taking the first quote from a single company’s representative, precisely because term length and health-class underwriting can differ meaningfully from one carrier to the next.
Common mistakes people make choosing a term length
| Mistake | Why it backfires |
|---|---|
| Buying the cheapest term available | A 10-year term that expires while a mortgage or dependency need is still active leaves you re-shopping at an older age, often at a higher rate class. |
| Rounding down instead of up | A 17-year obligation matched to a 15-year term runs out two years short; the extra premium for a 20-year term is usually small next to the risk of a coverage gap. |
| Ignoring the conversion deadline | A health change discovered after the conversion window closes means applying for new coverage through full underwriting, potentially at a much higher rate or a decline. |
| Sizing one policy to every obligation at the longest length | Pricing your entire coverage amount at 30-year rates when only part of the need actually runs that long usually costs more than a laddered approach would. |
| Not reassessing after a major life change | A new baby, a refinanced mortgage, or a career change can shift your longest obligation's timeline; a term chosen years ago may no longer match your real need. |
Before you sign anything
The figures in this article are averages drawn from published 2026 rate data and are not a quote or an offer of coverage. Coverage availability, features, and rates vary by carrier and state and are subject to underwriting. No coverage exists until a policy is issued and in force. Any guarantees are subject to the claims-paying ability of the issuing insurer. This article is general education, not insurance, legal, financial, or tax advice.
How to land on the right length instead of guessing
A rate table can show you what people your age typically pay at each length. It cannot tell you which length actually matches your mortgage payoff, your children’s ages, or your retirement timeline, because that math is specific to your life. The four-question method above gets you close on paper; the next step is running the numbers with someone who can compare how conversion options, laddering, and health classification interact across the specific carriers available to you, since those details can shift which length makes the most financial sense once you look past the sticker price.
Find the right term length for your situation
We compare 10, 20 and 30 year term options across the carriers we represent and help you match the length to what you're actually protecting. No pressure, no cost to talk.
Frequently asked questions
What is the difference between 10, 20 and 30 year term life insurance?
The number is simply how many years your premium stays level and your coverage stays in force. A 10-year term is the cheapest but expires soonest; a 30-year term costs the most per month but locks in your rate for three decades. A 20-year term sits in the middle and is the most commonly purchased length.
How much more does a 30-year term cost than a 20-year term?
For a healthy 40-year-old man buying $500,000 of coverage in 2026, a 20-year term averages about $59 a month and a 30-year term averages about $104 a month, roughly 76 percent more, according to MoneyGeek’s 2026 rate data. The gap widens further at older ages.
What term length do most people buy?
A 20-year term is the most commonly chosen length, according to industry guidance summarized by NerdWallet, largely because it matches the two most common financial anchors: a 30-year mortgage several years into repayment, and children reaching adulthood.
Can I convert my term policy to permanent coverage later?
Many term policies include a conversion option that lets you switch some or all of the coverage to a permanent policy without new medical underwriting, but nearly every insurer attaches a deadline, often a set number of years into the policy or an age cutoff like 65 or 70. Miss that window and the right to convert is gone.
What happens if I outlive my term life insurance policy?
A level term policy simply ends on its expiration date unless it includes a return-of-premium rider. Most term policies pay nothing back; the coverage lapses, and if you still want protection you must apply for a new policy at your then-current age and health, or use any conversion option before it expires.
Is it better to buy one long term or ladder multiple shorter terms?
Laddering, buying two or more term policies of different lengths and face amounts that expire as your need shrinks, can lower total premium paid over time compared with one large policy sized to your longest obligation. It adds complexity, so it fits people with a clear, decreasing need, such as a mortgage payoff schedule stacked against a shorter child-dependency window.
How do I decide which term length to buy?
Line up your financial obligations by how many years each one lasts, mortgage payoff, years until your youngest child is financially independent, years until retirement, and choose a term length that covers the longest of those. If your number falls between standard lengths, round up rather than down.
Sources
- MoneyGeek — 10-Year Term Life Insurance Policy Rates in 2026 — updated June 10, 2026
- MoneyGeek — 20-Year Term Life Insurance Rates — updated June 9, 2026
- MoneyGeek — 30-Year Term Life Insurance Premiums — updated May 29, 2026
- NerdWallet — How Long Should Your Term Life Insurance Last? — updated July 17, 2025
- LIMRA — U.S. Individual Life Insurance New Premium Tops $17.5 Billion to Set New Sales Record in 2025 — March 19, 2026
- Northwestern Mutual — What Is Term Conversion? — updated May 20, 2026
- HelpAdvisor — South Dakota Life Insurance — free-look period and guaranty association limit
Related reading: Life Insurance Cost by Age: 30, 40 and 50 in 2026 and Term vs. Whole Life in 2026: A Data-Driven Comparison. See current options for term life insurance, or learn more about coverage for homeowners and young families.
