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“Buy term and invest the difference” is incomplete

September 2026 · Sung Kang, licensed insurance agent

Around Piedmont and the OKC metro, “buy term and invest the difference” (BTID) shows up in almost every life-insurance conversation. Advisors debate it for a reason. The slogan is tidy. The household math underneath it is not.

I'm Sung Kang with HealthMarkets Insurance - The Kang Agency. I write term life, final expense, whole life, and indexed universal life (IUL). This note is about what BTID actually requires — and when a permanent design is a different job entirely.

What term is good at

Term life is cheap temporary protection. It fits a mortgage, young kids, or an income that needs replacing for a defined stretch of years. When the term ends, coverage can go to zero unless you convert, renew, or buy something else. That is not a flaw in the product. It is the design.

For many middle-income households, that design is the right starting point. Fund the 401(k), IRA, and taxable brokerage first. Keep the death benefit affordable. BTID is still a sensible default when the household needs inexpensive coverage and has the discipline to invest the premium difference elsewhere.

Where BTID only “wins”

BTID only works on paper and in practice if all of these hold:

• You actually invest the premium difference every year — not spend it
• You stay invested through market crashes instead of selling low
• You accept taxable growth (outside retirement accounts) and sequence-of-returns risk
• You are fine without a permanent death benefit later in life

Miss any one of those, and the spreadsheet comparison starts to lie. The “difference” that never gets invested is just a cheaper policy with no offsetting account.

Cash value is not the S&P

Comparing permanent cash-value contracts to the S&P 500 is often the wrong job description. Permanent cash value is closer to a safe or fixed-income sleeve than a growth engine. Some academic retirement research treats cash value as a bond-like buffer for that reason — not as a stock substitute. If you need equity growth, use equities. If you need a death benefit that can last and a cash account that is not mark-to-market every March, that is a different sleeve.

For a deeper look at that framing, see cash-value life as a safe sleeve and permission to spend and life insurance.

Honest holes when permanent is pushed too hard

Permanent coverage — including participating whole life and IUL — has real tradeoffs that deserve plain language:

• Early cash value is often weak; break-even can sit years later
• Illustrated rates are not the owner's internal rate of return
• Dividends, where a contract uses them, are not guaranteed
• Policy loans reduce the death benefit if they are unpaid

None of that makes permanent “bad.” It means permanent should be sized for a job the household actually has — legacy, business, special needs, or a long-horizon buffer — not sold as a shortcut that replaces investing. Most households should not treat permanent life as the place where a 401(k) contribution belongs.

My lane

I write term, final expense, whole life, and IUL. We will talk about which job you actually need. For many families, term plus disciplined investing is enough. For others, a permanent design — participating whole life, or IUL with its index-linked credits, floors, caps, and costs — may belong on the balance sheet. The right question is the job, not the slogan.

Talk it through

If you're in Piedmont or the greater OKC metro and want a calm walkthrough of term vs permanent options I write, call (405) 850-1900. More on what I offer is on the life insurance page.

I prefer to meet in person. Office hours are Monday–Friday, 10am–4pm. Closed on federal holidays.

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This post is general information for people in Piedmont and the OKC metro. It is not personalized advice and not a guarantee of coverage, eligibility, or results.