Term vs. whole life insurance: the math that matters
Key takeaways
04 · ideas- Term: pay for 10–30 years, coverage ends, cost is low
- Whole life: permanent coverage + cash value at 1–4% return
- $2M term might cost $100/month vs $1,500 for whole life
- $1,400/month invested at 7% for 20 years = $695,000
Basic level
The essentials · 1 min
Term life insurance covers a specific period — 10, 20, or 30 years. If you die during that period, your beneficiaries receive the payout. If you don't, coverage ends and you paid for protection you didn't need (like car insurance — you hope you never use it).
Whole life insurance (also called permanent life) covers you forever. It also builds "cash value" over time — a savings component within the policy.
The core question: Is the investment component of whole life worth paying 10–15× more in premiums?
For most people: No. Buy term and invest the difference.
Intermediate level
How it applies · 1 min
The buy-term-and-invest comparison
Scenario: 35-year-old, $2M of coverage needed, 20-year horizon.
| Policy | Monthly premium | Total cost (20 yrs) |
|---|---|---|
| 20-year term ($2M) | ~$100 | $24,000 |
| Whole life ($2M) | ~$1,500 | $360,000 |
Difference: $1,400/month
If you invest $1,400/month at 7% for 20 years:- Final value: $695,000
Whole life's cash value after 20 years on the same policy: typically $200,000–$350,000 (with a an equivalent return at your loan rate (without market risk) of 1–4%).
Verdict: The extra $1,400/month invested in a simple index fund grows 2–3× more than whole life's cash value.
When the comparison gets closer: If you're in a very high tax bracket and have maxed all other tax-advantaged accounts, whole life's tax-deferred growth can narrow the gap — but rarely reverses it.
Advanced level
The math, step by step · 2 min
Internal rate of return on whole life cash value
The actual return on whole life is calculated by treating premiums as "investments" and cash value as "returns":
Typical whole life IRR: 1.5–4% depending on policy and insurer. This is after the insurance company's costs.
Why returns are low:- High commission to agent (first-year premium often pays the agent entirely)
- Administrative costs
- Mortality cost for the insurance component
- Conservative investment strategy required by insurance regulators
The one scenario where whole life clearly wins: Estate equalization for high-net-worth individuals. If you have a $5M estate and want to leave equal inheritances to multiple heirs, but most of your assets are illiquid (business, real estate), a whole life policy can provide liquid cash for heirs without forcing asset sales. This is a niche planning strategy, not a general recommendation.