Whole Life vs Term Breakeven Analyzer
Compare whole life vs Buy Term, Invest the Difference (BTID) — the strategy of buying cheaper term insurance and investing the premium gap at a market return — over a multi-year horizon. Surfaces cumulative premium spent, cash-value crossover year, 30-year IRR (Internal Rate of Return) comparison, and dollar-difference at horizon. Cited to IRC (Internal Revenue Code) §72(e), §7702, LIMRA. Tax-treatment content reviewed by CPA per editorial-standards Section 7.
Whole-life cash value vs BTID after-tax portfolio at year 30. Recommendation: Term + BTID
BTID (Buy Term, Invest the Difference) ends ahead by $110,892 at year 30. The premium gap of $4,500/year invested at 7% net of tax compounds to materially more than the whole-life cash value at 4% tax-deferred growth. Term + invest is the operator-grade default for households with finite-horizon obligations (kids to independence, mortgage payoff).
BTID after-tax stays ahead of whole-life cash value through the full 30-year horizon. Under these assumptions, whole life never crosses over.
Year-by-year projection (every 5 years)
| Yr | WL cash | BTID after-tax | Cum. WL prem | Cum. term prem |
|---|---|---|---|---|
| 5 | $16,641 | $24,797 | $25,000 | $2,500 |
| 10 | $43,266 | $56,678 | $50,000 | $5,000 |
| 15 | $75,659 | $98,495 | $75,000 | $7,500 |
| 20 | $115,070 | $154,246 | $100,000 | $10,000 |
| 25 | $163,020 | $229,542 | $125,000 | $12,500 |
| 30 | $221,358 | $332,250 | $150,000 | $15,000 |
View the TypeScript implementation on GitHub: packages/calc/src/whole-life-vs-term.ts · view tests
What this means
For pure death-benefit need against a finite obligation — raise kids to independence, pay off the mortgage, replace lost income for a spouse — term is almost always the right answer because the cost-per-dollar-of-coverage is 5-15× cheaper. The premium-difference invested at a market return compounds to materially more than the whole-life cash value over typical horizons.
Whole life makes economic sense in narrow scenarios: estate-tax liquidity (ILIT inside an estate above $13.99M federal threshold), business buy-sell funding requiring guaranteed permanent coverage, or permanent-dependent income replacement. The producer's commission incentive on whole life (5-10× the dollar commission on equivalent term) means whole life gets recommended in many situations where the math doesn't support it. The calculator above isolates the decision from that asymmetry.
Worked example
At age 35, $1M coverage, 30-year term @ $500/year, whole life @ $5,000/year (10× term — typical ratio). Default assumptions: 4% WL cash value growth, 7% BTID return, 32% marginal tax. At year 30: cumulative WL premium $150K vs cumulative term $15K (term ends at year 30); WL cash value approximately $215K; BTID portfolio after-tax approximately $360K. BTID ends ~$145K ahead, recommendation: term + BTID. The BTID-after-tax IRR is roughly 5%, the WL IRR is roughly 1.5% — the gap reflects the commission/fee drag baked into the WL product.
Frequently asked questions
The information and tools on this website are for general educational purposes only and do not constitute financial, investment, legal, or tax advice. Consult a licensed professional for decisions specific to your situation.