IUL or Whole Life After Maxing 401k, Roth IRA, and HSA: the Honest High-Earner Case
If you have genuinely exhausted all qualified tax-advantaged accounts, permanent life insurance is one of several candidates for additional tax-deferred savings. A taxable brokerage account is still the more common answer. Here is the honest comparison for 2026.
Important: Max these first
Before permanent insurance makes sense, you must have genuinely maxed: 401k ($23,000 in 2026; $30,500 with catch-up at 50+), back-door Roth IRA ($7,000; $8,000 at 50+), HSA ($4,300 individual / $8,550 family in 2026), and 529 if you have dependents. If any of these remain unfunded, start there.
The qualified-account stack for 2026
401k to employer match
Match threshold varies; never leave match on table
Roth IRA or back-door Roth
$7,000 ($8,000 at 50+); phase-out above $161k single / $240k MFJ
HSA (if HDHP-enrolled)
$4,300 individual / $8,550 family in 2026; triple tax-advantaged
529 (if you have children)
No federal limit; state deductions vary; superfunding option
401k to full limit
$23,000 ($30,500 at 50+); or Mega Backdoor Roth if plan permits
Taxable brokerage account
No limit; tax-efficient index funds; fully liquid. Most high earners stop here.
Permanent life insurance (IUL or whole life)
Only here, after all of the above. Tax-deferred, illiquid, complex.
30-year projection at $300k household income, $50k/year surplus
Illustrative projections only. Assumptions: $50k/year invested; taxable brokerage at 7% historic real S&P 500 return (after-tax efficient index fund); IUL at AG 49-B illustration ceiling minus estimated COI and fees; whole life at 6.5% dividend rate with PUA rider. Individual results vary significantly. Not a guarantee of future performance. Consult a fee-only fiduciary.
The taxable brokerage generally outperforms permanent insurance over a 30-year horizon for most high earners. Exceptions occur when: (a) the policyholder is in a very high tax bracket throughout retirement and the tax-free policy-loan advantage is significant; (b) the policy is heavily overfunded (50-100% above target premium) for the full term; (c) the IUL cap rates do not continue declining.
When IUL might add value for a high earner
The infinite banking concept: honest assessment
The "infinite banking concept" (popularised by R. Nelson Nash) involves overfunding a whole life policy and using policy loans as a personal line of credit. The math works when the policy is heavily overfunded, the dividend rate exceeds the loan interest rate, and the policyholder consistently repays loans. The marketing often oversells the case: most middle-income earners who fund at target premium do not benefit from infinite banking mechanics. For high earners genuinely overfunding a well-structured mutual whole life policy, the concept has legitimate mechanics. Consult a fee-only fiduciary who is not the agent selling the policy.
Can I use IUL as a retirement account?+
IUL is sometimes marketed as a 'retirement account' but it is not a qualified retirement account. Contributions are made with after-tax dollars. Growth is tax-deferred. Policy loans can be taken tax-free if the policy is non-MEC and stays in force. If the policy lapses in retirement, the accumulated gain becomes taxable phantom income. The 'tax-free retirement income' pitch is valid only if the policy is non-MEC, adequately funded throughout, and never lapses. These conditions require active management and are not guaranteed.
Is IUL better than a Roth IRA for high earners?+
For most high earners, no. A Roth IRA (or back-door Roth) has no investment expenses, full liquidity, clear tax treatment, and a broad investment menu including low-cost index funds. IUL has insurance charges, cap-rate uncertainty, and a complex policy structure. The primary IUL advantage (no contribution limit) is relevant only after the Roth IRA limit is fully exhausted. Even then, a taxable brokerage with tax-efficient index funds often outperforms IUL on an after-tax basis.