529 Plan vs IUL for Your Kids: Which Is Better, and What Is Legacy Banking?

A young couple with daughters asked me this a few weeks ago, and it is one of the questions I hear most: "We want to set up our girls. Should the money go into a 529 plan, a kids' IUL, or something else? And what is this legacy banking thing a friend mentioned?" Here is the honest answer, including where each one falls short.

What is a 529 plan, and what is it really good at?

A 529 plan is an investment account built for education. You put money in, it is invested (usually in funds), and the growth is free of federal income tax when you spend it on qualified education costs like tuition, books, required fees, and room and board. Many states also give a tax deduction or credit for contributions. If the main goal is paying for school, that tax treatment is hard to beat, and I tell families that plainly.

The trade offs are about what happens when life does not follow the plan:

• Non-qualified withdrawals. If you take money out for something other than education, the earnings are taxed as income and hit with an additional 10% federal penalty. Your original contributions come back without tax.
• Change the beneficiary. An unused 529 can be moved to another eligible family member, including a sibling, without tax. That is a real flexibility many people overlook.
• Scholarships. If the child earns a scholarship, you can withdraw up to that amount without the 10% penalty (income tax on the earnings still applies).
• 529 to Roth IRA rollover. Since 2024, leftover money can be rolled into the beneficiary's own Roth IRA, but only under limits: the 529 must have been open for at least 15 years, there is a lifetime cap of $35,000, each year's rollover is limited by the annual Roth IRA contribution limit, the beneficiary needs earned income, and recent contributions (the last five years) do not qualify.
• Financial aid. A parent owned 529 counts as a parent asset on the FAFSA, at a modest percentage. It usually helps less than people fear, but it is not invisible.

So a 529 can bend, but it is still built for one main use. If a family needs money at 35 or 45 for a house, a business, or a hard year, a 529 is not designed to be that account. Take the money out for those things and you pay tax and a penalty on the growth.

What is a child IUL, and how is it different?

A child IUL is permanent life insurance on your child, owned and paid for by you. It is life insurance first. The growth part is secondary. The policy builds cash value that is linked to an index like the S&P 500 without owning the index. Credits are limited by a cap and participation rate, and there is a floor (often 0%) so a down index year does not reduce the credited interest. Policy charges still come out either way. If you want the full mechanics, I walk through them in how indexed universal life policies work.

What it adds that a 529 does not:

• A death benefit on the child, and the child's insurability locked in at a young age, regardless of health later.
• Possible living benefit riders. Some policies offer riders that let you access part of the death benefit early for a qualifying chronic, critical, or terminal illness. What is offered, what it costs, and whether it is available depends on the carrier, the policy, and your state.
• Access to cash value through policy loans, for any purpose, not only education, once there is cash value to borrow against.
• Flexibility on the use. The child can later take over the policy, or you can keep it as part of your own plan.

The costs are real too, and I would rather you hear them from me:

• Cash value grows slowly at first. In the early years, what you can access is often less than what you paid in, and surrender charges can apply if you cancel in the first 10 to 15 years.
• It takes years to build, and it only works if you keep funding it. A policy that is underfunded or abandoned can lapse.
• Caps and participation rates can change, and the index credits are not guaranteed. See the fees most people miss before you sign anything.
• Paying in too fast can turn the policy into a modified endowment contract (MEC), which changes how loans are taxed. A well structured IUL is designed to avoid that.

Where does a Roth IRA fit for the parents?

A Roth IRA for you and your spouse is usually the first account I want in place before either of the above. You contribute after tax dollars, and qualified withdrawals in retirement are tax free. It also lets you take your contributions back at any time, which makes it a decent backstop. The limits are yearly contribution caps, and income limits apply. A Roth is for you. A 529 and a child IUL are for the girls. I would not skip your own retirement to fund theirs, and the same logic is covered in IUL vs 401(k).

529 vs child IUL vs Roth: side by side

	529 plan	Child IUL	Parents' Roth IRA
Built for	Education costs	Life insurance first, plus cash value	Parents' retirement
Tax treatment	Tax free growth for qualified education use; deduction in some states	Tax deferred growth; income tax free loans if structured and kept in force	Tax free qualified withdrawals
If not used for its main purpose	Earnings taxed plus 10% penalty, or change beneficiary, or limited Roth rollover	Keep it, borrow, or hand it to the child; surrender charges early on	Contributions come out any time
Death benefit	None	Yes, on the child	None
Market exposure	Invested in funds; can lose value	Index linked credits with a floor and a cap; charges still apply	Invested in whatever you choose
Main risk	Market losses; penalty if the plan changes	Slow early growth, charges, lapse if underfunded	Contribution and income limits
Financial aid	Counted as a parent asset	Cash value generally not reported on the FAFSA	Retirement accounts generally not reported

Illustrations and projections for any of these are hypothetical and not guaranteed.

What is legacy banking?

Legacy banking, also called family banking, is a way of using a permanent life insurance policy as a source of family financing. Parents fund a policy over the years. Later, instead of going to a bank, they take a policy loan against the cash value for a big purchase such as a car, a down payment, or a business need, and they pay it back with interest, which rebuilds the policy. The idea is that your family becomes its own source of credit, and the policy keeps the death benefit for the next generation.

It can work. I have seen it work for people who funded a policy steadily and borrowed carefully. But here is what the sales pitch usually leaves out:

• Loans cost interest. The carrier charges loan interest, which can be fixed or variable. Depending on the policy, the borrowed amount may still earn something or may not.
• Loans reduce the death benefit and the cash value until they are repaid.
• Over borrowing can lapse the policy. If the loan balance grows to exceed the cash value, the policy can terminate, and the taxable gain can arrive as a tax bill with no cash to pay it. I cover how to avoid that in 8 IUL loan strategies.
• Illustrations are not promises. The numbers you see assume a rate of credit that may not happen.
• You need years of funding first. There is nothing to borrow in the first couple of years, and the early years are the weakest.

It is a tool, not a shortcut around a bank, and it is not a replacement for savings you can reach today.

When does each one fit?

• 529 first if the money has one job, paying for college, and you want the most tax efficient way to do that.
• Child IUL if you want permanent coverage and a long term asset that is not tied to school, you can fund it for 15 years or more, and your own emergency fund and retirement are already moving.
• Roth for you before either, if you do not have one yet.
• Neither yet if you carry high interest debt or have under a few months of cash set aside. Fix that first. My own view: a plan that gets underfunded after two years serves nobody.

Many families use both: a 529 for the school years and a small IUL for the girls' long game, sized so the monthly amount holds up in a slow month. That is also the point where an IUL is just one piece of a full plan.

Your next step

If you want to see how this looks for your family, with real numbers, book a free plan review. We will look at the whole picture first, then decide whether any of this belongs in it. You can also take the IUL quiz, or send us a question on the Ask an IUL question page.

Sources: IRS Publication 970, Tax Benefits for Education, 26 U.S. Code 529, 26 U.S. Code 7702.

This is educational and not tax or legal advice. Illustrations are hypothetical and not guaranteed. Policy features, costs, riders and availability vary by carrier and state and are subject to underwriting.