Term Life vs Whole Life Insurance Calculator

How the term vs whole life math works

Term life is pure insurance: you pay a small premium, and if you die during the term your family gets the death benefit. If you outlive the term, the policy ends and you get nothing back. Whole life is insurance plus a savings account: you pay a much larger premium, the policy covers you for life, and part of what you pay builds cash value you can borrow against or surrender. The honest comparison is not the premium against the premium. It is the net cost — everything you pay, minus the cash value you end up with — against the term premium, plus what the money you saved could have earned invested.

At the defaults the premiums look like different products entirely: $45.00 a month for term against $415.00 a month for whole life, a gap of $370.00 a month, for the same $500,000 of cover on the same healthy 35-year-old non-smoker. Over 30 years term costs $16,200.00 and whole life costs $149,400.00 in premiums. But whole life is not $133,200.00 more expensive: $115,038.00 of it comes back as cash value, so the net cost is $34,362.00 — still $18,162.00 more than term, but less than a quarter of the headline gap.

The worked example, line by line

Setup: coverage $500,000.00; term premium $45.00 a month; whole-life premium $415.00 a month; 30 years; invest-the-difference return 7.00% a year.

Line 1 — term total. $45.00 × 12 × 30 = $16,200.00.

Line 2 — whole-life total. $415.00 × 12 × 30 = $149,400.00.

Line 3 — cash value. At 30 years the cash value is 77% of whole-life premiums paid: $149,400.00 × 77% = $115,038.00.

Line 4 — whole-life net cost. $149,400.00 − $115,038.00 = $34,362.00.

Line 5 — the net gap. $34,362.00 − $16,200.00 = $18,162.00 — whole life costs that much more, net, over 30 years.

Line 6 — the monthly gap. $415.00 − $45.00 = $370.00 a month.

Line 7 — invest the difference. $370.00 a month, compounded monthly at 7.00% a year for 360 months: $370.00 × ((1 + 0.07/12)^360 − 1) / (0.07/12) = $451,389.27.

Line 8 — cost per $1,000 of cover a year. Term: $45.00 × 12 / 500 = $1.08. Whole life: $415.00 × 12 / 500 = $9.96. Whole life net: $34,362.00 / 30 / 500 = $2.29.

Line 9 — the break-even. A whole-life premium of $195.65 a month breaks even on net cost at 30 years: 23% of its premiums (the part that is not cash value) over 30 years equals the term total, 0.23 × 12 × 30 × $195.65 = $16,200.00.

Every branch, checked

20 years: term totals $10,800.00; whole life totals $99,600.00, cash value is 60% of premiums, $59,760.00, net cost $39,840.00, gap $29,040.00. The gap is wider at 20 years than at 30, because cash value grows slowly early on.

10 years: term totals $5,400.00; whole life totals $49,800.00, cash value is 35% of premiums, $17,430.00, net cost $32,370.00, gap $26,970.00. In the first decade whole life is at its worst: you have paid $49,800.00 and hold only $17,430.00 of value.

Cheaper whole life, $300 a month: over 30 years whole life totals $108,000.00, cash value $83,160.00, net cost $24,840.00, gap $8,640.00. A cheaper whole-life policy more than halves the gap — the premium is the whole story.

Pricier term, $75 a month: term totals $27,000.00 over 30 years, so the gap against the $34,362.00 whole-life net cost shrinks to $7,362.00. If term is expensive for you — older, smoker, health issues — the case for term weakens.

$1,000,000 of coverage (premiums double): term totals $32,400.00, whole-life net cost $68,724.00, gap $36,324.00. Everything scales with coverage, so the gap doubles with it.

Invest the difference at 5%: the $370.00 a month grows to $307,935.70 over 30 years. At 9%: it grows to $677,375.09. Even at 5% the invested difference dwarfs the $18,162.00 net gap — that is the buy-term-and-invest-the-difference argument in one number.

Reverse — the break-even premium: a whole-life premium of $195.65 a month breaks even with term on net cost at 30 years. At $415.00 a month the policy would need to return far more cash value than the 77% in this illustration to compete.

What the defaults assume

The premiums on this page are illustrative for a healthy 35-year-old non-smoker — real quotes vary by age, health, smoking status, and insurer, and whole-life premiums vary far more than term. The cash-value curve is an illustration, not a guarantee: cash value is about 35% of whole-life premiums paid at year 10, 60% at year 20, and 77% at year 30, with straight-line interpolation between those points, 35% below year 10, and a cap of 77% above year 30. Real policies differ: some build value faster, some slower, and dividends, fees, and surrender charges all move the number. The invest-the-difference figure assumes the $370.00 a month is invested every month at a steady return with no taxes or fees — real investing is lumpier and taxed. Rounding convention: money is rounded to cents and all figures are computed from unrounded values, rounded only for display.

Output · formula · meaning

Who uses this

• The young parent: needs $500,000 of cover for the least money and learns term costs $16,200.00 over 30 years against $34,362.00 net for whole life — so term leaves $370.00 a month to invest, which grows to $451,389.27 at 7%.
• The estate planner: needs cover that never expires and learns whole life's net cost is $34,362.00 after cash value — so the lifetime guarantee costs about twice term, not nine times, once cash value is counted.
• The business owner: is pricing a policy to fund a buy-sell agreement and learns the break-even whole-life premium is $195.65 a month — so any quote above that is more expensive than term on net cost, whatever the agent says.
• The tight-budget buyer: can afford $45.00 a month but not $415.00 and learns the gap is $370.00 a month — so the choice is made by the budget, and term is the only policy that fits it.

Accuracy & limitations

The math is exact for the numbers you enter: totals are premium times months, cash value is the curve percentage of whole-life premiums, net cost is total minus cash value, and invest-the-difference is the future value of the monthly gap at the return you enter, compounded monthly. But the inputs carry the assumptions. Premiums are illustrative for a healthy 35-year-old non-smoker: your real quotes depend on age, health, smoking, and the insurer, and whole-life premiums vary much more than term. The cash-value curve (35% at year 10, 60% at year 20, 77% at year 30, linear between, 35% below year 10, capped at 77% above year 30) is an illustration, not a guarantee: real policies build value at different speeds, and dividends, fees, loans, and surrender charges all change the number. Cash value is not free money: borrowing against it reduces the death benefit, and surrendering the policy can trigger tax. The invest-the-difference figure assumes steady monthly investing at a fixed return with no taxes, fees, or market falls — real returns are lumpy and taxed, and the 7% default is an assumption, not a promise. Term has a real risk this calculator does not price: if you outlive the term and still need cover, a new policy at an older age costs far more, and if your health has worsened you may not qualify at all. Whole life's lifetime guarantee has value this calculator counts only as cash value. Get real quotes for both before deciding, and read the term vs whole life guide for the full picture.