Two ways to insure a life, one honest comparison
Term life insurance covers you for a set number of years — 10, 20, or 30 — and pays only if you die during the term. When the term ends, the coverage ends. Whole life insurance covers you for your entire life, costs roughly 10–15 times more for the same death benefit, and builds a cash value you can borrow against. Almost nobody needs both for the same dollars: the real question is whether your need expires. Mortgages get paid off and children grow up — those are term-shaped problems. A child who will never be independent, or an estate large enough to owe tax, is a whole-life-shaped problem.
Output · formula · meaning
| Output | Formula | What it means |
| Term monthly (illustrative) | coverage ÷ 1000 × $0.72 × 1.055^(age−35) × term/health factors ÷ 12 | An illustrative estimate of a level term premium for your inputs — not a quote. |
| Whole life monthly (illustrative) | term monthly × 12 (range: 10×–15×) | Whole life typically costs 10–15× term for the same benefit; the page shows the range. |
| Totals over the term | monthly × 12 × years | What each option costs if you hold it for the full term length. |
| Invest-the-difference | FV of (whole − term)/mo at your return | What the monthly savings grow to if you buy term and invest the gap yourself. |
| Illustrative cash value | ~55% of whole-life premiums at term end | A rough placeholder for whole life's savings component — actual cash value varies widely. |
| Winner | lowest total cost wins, need-gated | Term wins on cost for temporary needs; a permanent need flips the verdict to whole life. |
What actually drives each price
Term price is driven by age first — mortality rises exponentially, so a 55-year-old pays several times what a 35-year-old pays for the same policy. Then health class, then term length: a 30-year term costs more per year than a 20-year because the insurer covers your older, riskier years. Whole life price is driven by the same factors plus the savings component: part of every premium funds the death benefit and part is credited to cash value, which is why the multiple over term is so large. Commissions on whole life are also much higher, which is why agents push it — worth knowing when someone tells you it is an investment.
The buy-term-and-invest-the-difference math
On the default — $30/mo term vs $360/mo whole life — the gap is $330 a month. Invested at 7% for 20 years, that gap compounds to about $172,000, while the whole policy's illustrative cash value sits near $47,500. That is the core of the standard advice: buy the cheap pure insurance, and put the savings where the fees are visible and the money stays liquid. Whole life's cash value grows slowly, early premiums go mostly to costs and commission, and surrendering in the first several years can return less than you paid.
Who uses this
- New parents deciding how much coverage buys the mortgage-plus-college safety net, and whether a 20- or 30-year term matches the years the kids depend on them.
- A sole breadwinner whose family would lose the household income — checking what $500k or $1M of term actually costs per month at their age.
- Someone pitched whole life as an investment — running the invest-the-difference math to see what the same dollars do in an ordinary investment account.
- A family with a lifelong dependent — the one case where the verdict flips: coverage that must outlive you needs a permanent policy.
Accuracy & limitations
Every premium on this page is an illustrative estimate, not a quote. Real premiums come from medical underwriting, smoking status, family history, occupation, and the insurer's own mortality tables — your actual quote will differ, sometimes a lot. The 10–15× whole-life multiple and the 55% cash-value placeholder are industry-typical ranges, not promises. This page is educational, not financial or insurance advice: get quotes from several insurers and consider a fee-only professional before buying.