Term vs Whole Life Calculator
Premiums, return & years
Your result will appear here
Fill in the fields on the left and this updates as you type.
Know what this estimate is based on
- Jurisdiction
- United States — state-regulated insurance
- Scope and limitations
- Educational estimate only. Insurance in the U.S. is regulated state by state, so rates, required coverages and available discounts differ by where you live. Your premium is set by an insurer's own underwriting — driving record, claims history, credit-based insurance score where permitted, the property itself — and only a quote is binding. What a policy pays depends on its exclusions and limits, not on this estimate.
- Source links checked
- Jul 30, 2026
Built and regression-tested by Smart Tools Lab. It has not been individually reviewed by a licensed financial, tax, or legal professional.
How to use
- 01
Enter the annual premium for the term policy and for the whole-life policy you're comparing.
- 02
Set the investment return you'd realistically earn on the difference and the number of years to run the comparison.
- 03
Read the headline to see what the invested difference grows to, the whole-life cash value beside it, and the crossover year where investing pulls ahead.
- 04
Open Advanced options to set the whole-life credited rate so the cash-value projection matches your actual policy illustration.
Formula
The calculator races two strategies against each other year by year over the period you choose. Strategy one is 'buy term and invest the difference': you pay the cheaper term premium and invest the leftover gap, diff = max(0, wholePremium − termPremium), every year at your investment return. Each year that pot is grown then topped up: invested = invested × (1 + investReturn) + diff, which is the future value of an ordinary annuity, equivalently diff × ((1 + r)^years − 1) ÷ r. Strategy two is whole life: the full whole-life premium accumulates as guaranteed cash value at the credited rate, cashValue = cashValue × (1 + creditedRate) + wholePremium each year. The headline 'difference invested grows to' is the invested pot after the final year. With the defaults the gap is 102,000 a year compounding at 7% for 30 years, which reproduces the base case of 9,635,000, while whole-life cash value reaches 6,730,193. The tool also walks both balances forward to flag the crossover year — the first year the invested difference overtakes the cash value — and reports the extra premium whole life costs, diff × years. The Advanced 'whole-life credited rate' field sets how fast that cash value grows; leaving it at 4% gives the base figures, while a higher rate makes whole life more competitive and a lower one widens the gap in favour of investing.
Example
Take the defaults: a term policy costing 18,000 a year, a whole-life policy costing 120,000 a year, a 7% investment return, 30 years, and a 4% whole-life credited rate. The annual premium gap is 120,000 − 18,000 = 102,000, and that is what the term buyer invests each year. After year one the invested pot is 102,000; after year two it is 102,000 × 1.07 + 102,000 = 211,140, and so on. Compounding that 102,000 annual contribution at 7% for 30 years gives 102,000 × (1.07^30 − 1) ÷ 0.07 = 102,000 × (7.612255 − 1) ÷ 0.07 = 9,635,000 — the headline 'difference invested grows to'. Meanwhile the whole-life premium of 120,000 builds cash value at 4%: 120,000 × (1.04^30 − 1) ÷ 0.04 = 120,000 × (3.243398 − 1) ÷ 0.04 = 6,730,193. Over the 30 years the whole-life buyer pays 102,000 × 30 = 3,060,000 more in premiums than the term buyer. Tracking both paths reveals the invested difference is still slightly behind in year 11 (1,609,927 versus 1,618,362) but pulls ahead in year 12 (1,824,622 versus 1,803,097), so the crossover lands in year 12. By year 30 buying term and investing the difference ends ahead by 9,635,000 − 6,730,193 = 2,904,808.
Definitions
- Term annual premium
- What the cheaper term policy costs you each year; this is the smaller of the two premiums and sets the baseline you pay either way (0 to 10,000,000).
- Whole-life annual premium
- What the permanent whole-life policy costs each year; the part above the term premium is the 'difference' the term buyer invests instead (0 to 10,000,000).
- Investment return
- The annual rate you assume the invested difference earns — a diversified portfolio return before fees and tax (0% to 20%, default 7%).
- Years
- How long both strategies run, usually matched to the term policy's length or the years your family needs cover (1 to 60 years, default 30).
- Whole-life credited rate
- An advanced input: the annual rate at which the whole-life premium builds guaranteed cash value, typically lower than market returns (0% to 12%, default 4%).
- Difference invested grows to
- The headline result: the future value of investing the annual premium gap at your investment return for the full period, compared against the whole-life cash value.
Good to know
The real question behind the term-versus-whole-life debate
The argument over term and whole life insurance is rarely about death benefits, because both products can pay your family the same amount if you die. The genuine question is what happens to the money in between — the difference in premium you either hand to an insurer or keep and invest yourself. Whole life bundles two things into one bill: pure protection and a savings account that grows at a credited rate. Term insurance strips that bundle down to protection alone, and because protection for a healthy person is cheap, the term premium is a fraction of the whole-life premium. That gap is the heart of this calculator. A whole-life buyer effectively forces themselves to save the difference inside the policy, where it compounds slowly but with a guarantee. A term buyer keeps the difference and must choose to invest it, accepting market risk in exchange for a higher expected return. Framed this way, the decision stops being an emotional 'permanent versus temporary' choice and becomes a measurable contest: over your chosen horizon, does the difference invested at a market return end up larger than the cash value the insurer would have built for you? This tool answers exactly that by running both balances forward year by year. It deliberately holds the death benefit equal and ignores it, so nothing distracts from the wealth comparison. Understanding the question this precisely matters, because the marketing around permanent insurance often blurs protection and investment together, making whole life look like a free savings bonus rather than a costly bundling decision. Separate the two and the trade-off becomes clear: you are paying for forced savings, a guarantee and an insurer's costs, and the calculator shows whether that package outperforms doing the saving yourself.
How the two paths compound — and why timing matters
The calculator advances two balances through each year of the period. On the term-and-invest path, the annual premium difference is added to a pot that grows at your investment return: invested becomes invested times one-plus-return, then the difference is added on top. On the whole-life path, the full whole-life premium is credited to a cash-value account that grows at the credited rate. Two features of this mechanic explain almost everything you'll see. First, the whole-life account starts with a head start in raw contributions: it receives the entire premium each year, while the term path only invests the smaller gap. With the defaults that means 120,000 a year flowing into cash value versus 102,000 a year into the portfolio. Second, the term path grows at a higher rate, so even though it contributes less, its compounding eventually overwhelms the difference. Early in the comparison the larger contributions dominate and whole life can lead; later the higher return dominates and the invested difference surges ahead. The point where the second force overtakes the first is the crossover year. This dynamic is why short horizons can flatter whole life and long horizons reward investing. A buyer who needs the money in five years sees a very different result from one comparing over thirty. It's also why the credited rate and the investment return are the two most powerful levers in the model: they don't just shift the final numbers, they move the crossover year forward or backward and can even flip which strategy wins. Watching the year-by-year schedule, rather than only the headline, reveals whether your own time horizon falls before or after that crossover.
Reading the worked example step by step
The default scenario makes the mechanics concrete. The term policy costs 18,000 a year and the whole-life policy 120,000, so the annual difference the term buyer invests is 102,000. At a 7% return over 30 years, that stream of 102,000 deposits compounds into 9,635,000 — the future value of an annuity, 102,000 times the quantity 1.07 raised to the 30th power minus one, all divided by 0.07. The factor 1.07^30 equals about 7.612, which turns each year's contribution into a much larger sum by the end. On the other side, the whole-life premium of 120,000 a year grows at the 4% credited rate to a cash value of 6,730,193, using the same annuity formula with 1.04^30 of about 3.243. Notice how a three-percentage-point difference in growth rate produces a far larger difference in outcome than the gap in contributions would suggest: the term buyer invests less each year yet finishes nearly three million ahead. Tracing the balances year by year shows the contest is genuinely close at first. In year 11 the invested pot of 1,609,927 still trails the cash value of 1,618,362, but by year 12 it leads 1,824,622 to 1,803,097, so the calculator flags year 12 as the crossover. Over the full term the whole-life buyer also pays 3,060,000 more in premiums — 102,000 extra a year for 30 years — for a cash value that ends 2,904,808 short of the invested alternative. Each figure in the headline and the stat row traces directly back to these two compounding streams, so you can audit the result rather than trust it blindly.
What the credited rate hides inside whole life
The advanced whole-life credited rate is the single number that most shapes whether permanent insurance looks competitive, and it is also the number insurers present least transparently. A whole-life premium does not grow your cash value at the policy's headline 'dividend' or 'illustrated' rate, because a large share of each early premium pays the cost of insurance, agent commissions and administrative loads before anything reaches the cash account. The credited rate in this calculator is the net rate that actually compounds your balance, which is why pulling it from a real in-force illustration matters more than trusting a brochure. Historically, net credited rates on whole-life policies have sat in the low single digits — often around 3% to 5% — well below the long-run return of a diversified stock-and-bond portfolio. Setting the field to 4% reproduces the base comparison; nudging it up to 6% narrows the gap sharply, and pushing it toward the 12% ceiling can let whole life win outright. That sensitivity is the lesson: small changes to a rate that is partly under the insurer's discretion can swing a thirty-year decision by millions. Be skeptical of high illustrated rates, because dividends are not guaranteed and the figures shown at the point of sale tend to assume favourable, non-binding scenarios. The guaranteed floor — the rate the insurer must credit no matter what — is usually far lower than the illustration. By letting you set the credited rate yourself, the tool forces an honest input: enter the guaranteed or conservatively expected net rate, not the optimistic projection, and the comparison reflects what you can actually count on rather than what you've been shown.
Risk, discipline and the assumptions you are making
The calculator's verdict rests on two assumptions that deserve scrutiny before you act on the number. The first is the investment return. Buying term and investing the difference only wins if the difference is actually invested and actually earns the rate you entered. Markets do not deliver 7% in a smooth line; they swing, and a poor sequence of early returns can leave the portfolio behind the steady, guaranteed cash value for longer than the model's average suggests. The whole-life path, by contrast, offers a contractual floor — slow growth, but growth that cannot fall in a bad year. That certainty has real value to someone who would panic and sell in a downturn, or who simply will not maintain the discipline to invest the gap every year for decades. This is the behavioural case for whole life: it automates saving and removes temptation, and for a household that would otherwise spend the difference, a guaranteed cash value beats a portfolio that never gets funded. The second assumption is that both policies carry an identical, level death benefit for the whole period, which is rarely exactly true — term cover expires at the end of its term while whole life persists for life, and whole-life death benefits can grow with dividends. The tool isolates the wealth question and ignores these coverage differences on purpose, so the result is a clean financial comparison, not a complete recommendation. Use it to understand the magnitude of the trade-off — here, nearly three million over thirty years — then weigh it against your tolerance for risk, your saving discipline, and whether you need cover that lasts beyond the term. The honest portfolio is conservative on the return and conservative on the credited rate, so neither side is flattered.
Turning the comparison into a decision
Once you've run the numbers, translate them into action rather than treating the headline as a verdict on its own. Start by matching the years field to a real horizon: the length of the term policy you'd buy, or the span during which your family genuinely depends on your income. If your need is temporary — covering a mortgage and raising children to independence — term is almost always the cheaper way to carry it, and this calculator typically shows the invested difference winning comfortably over such periods. If your need is permanent, such as providing for a dependant who will never be financially independent, leaving a guaranteed estate, or covering estate taxes that fall due at death, the certainty of whole life can justify its higher cost even when the wealth comparison favours investing. Next, stress-test the inputs: lower the investment return to a pessimistic figure and raise the credited rate to your policy's guaranteed floor, and see whether buying term still wins. If it wins even under conservative assumptions, the case is robust; if the result flips easily, your decision hinges on factors the calculator can't capture, like your confidence in staying invested. A common hybrid is to buy term for the bulk of the temporary need, keeping premiums low, and hold only a small permanent policy for genuinely lifelong obligations — capturing both the cost efficiency of term and the certainty of permanent cover where it actually matters. Whatever you decide, fund the difference deliberately: the entire term-and-invest case collapses if the saved premium quietly leaks into spending. Set up an automatic transfer into a low-cost investment account equal to the premium gap, so the strategy this tool models is the strategy you actually live.
Frequently asked questions
What does 'buy term and invest the difference' actually mean?
It means choosing the cheaper term policy for the same death benefit, then investing the money you saved on premiums rather than letting an insurer hold it. This tool invests the annual gap between the two premiums at your chosen return and compares the resulting pot against the whole-life cash value. The idea is that a market return usually beats the credited rate inside a whole-life policy, so the disciplined investor ends up wealthier.
Why does the invested difference usually beat whole-life cash value?
Whole-life premiums build cash value at a modest guaranteed credited rate — 4% by default — after the insurer covers its costs, commissions and overhead. Investing the same difference in a diversified portfolio assumes a higher long-run return, 7% by default, with no insurer skim. Compounding that gap over decades produces a large lead, which is why the headline difference usually exceeds the cash value.
What is the crossover year the calculator reports?
It's the first year the invested difference catches and overtakes the whole-life cash value. Early on whole life can lead because its full premium goes to cash value while the term buyer invests only the smaller gap. With the defaults the invested pot trails for the first eleven years and crosses ahead in year 12, after which its higher return widens the lead each year.
Does this comparison ignore the insurance itself?
Yes, deliberately. Both strategies are assumed to carry the same death benefit, so the calculator isolates the money question: which approach builds more wealth for the same protection. It does not model the level death benefit, dividends, policy loans or the tax treatment of either side, so treat the result as a wealth comparison rather than a full coverage analysis.
When might whole life actually win?
Raise the credited rate or lower the investment return and the gap narrows or reverses — whole life can win if its illustrated rate is high, if you'd otherwise spend rather than invest the difference, or over short horizons before compounding favours the market. Permanent cover also suits lifelong dependants, estate-tax planning and the certainty of a guaranteed payout, which a self-managed portfolio cannot promise.
What return and rate should I enter?
Use a return you'd genuinely earn after fees on a long-term diversified portfolio — many planners use 6% to 7% — and pull the credited rate straight from your whole-life policy illustration rather than the headline 'dividend' figure, which often overstates what actually compounds. Conservative inputs on both sides give a fairer, less optimistic comparison.