Trump Accounts for Children: Key Risks Parents Should Know Before Opening One

Trump accounts, formally known as 530A accounts, will let parents open tax advantaged savings vehicles for children under 18 starting July 4, but a design quirk deserves scrutiny: until the child turns 18, the money can only be invested in U.S. stocks, with no bond allocation and no diversification permitted.

At a Glance

• 530A accounts (Trump accounts) launch July 4 for children under 18
• Funds must stay in U.S. equities only until the beneficiary turns 18
• Stocks have beaten bonds by 5.5 annualized percentage points since the mid 1920s
• That outperformance streak covers roughly the last third of U.S. financial history
• A 60/40 portfolio has historically trailed an all stock portfolio by only 1.6 points annualized over 10 year periods

Why an Equity Only Mandate Is Riskier Than It Looks

The case for the accounts rests on a familiar premise: stocks win over long horizons. Since the mid 1920s that has held true, with equities outpacing bonds by 5.5 annualized percentage points on a total return basis. But research from Edward McQuarrie, professor emeritus at Santa Clara University, shows this stretch is historically unusual rather than typical. For the first two thirds of U.S. financial history, stocks and bonds produced comparable returns.

What 50 Year Rolling Periods Reveal

McQuarrie's data on rolling 50 year windows makes the point sharper. Divide U.S. history into three roughly equal segments. In the earliest third, stocks never beat bonds over any 50 year stretch. In the middle third, stocks won about half the time. Only in the final third, the modern era, did stocks outperform in every single 50 year period. A mandate that forces children's savings into equities alone is betting that the most recent third of history is the permanent regime, not a temporary one.

How a Balanced Portfolio Has Actually Performed

Even within the modern era that favors stocks, a diversified approach has not lagged by much. Since 1926, an annually rebalanced portfolio holding 60% in the S&P 500 and 40% in long term U.S. Treasurys returned an average of 9.1% annualized across all 10 year periods. A 100% stock portfolio returned 10.7% over the same stretch. That is a 1.6 percentage point gap, achieved during one of the most favorable equity climates on record, and it came with materially less volatility along the way.

Eligibility and Trade Offs Parents Should Weigh

The structural trade off is straightforward. Locking a minor's account into equities only removes the option to dampen sequence of returns risk through bonds, even as the account approaches the child's 18th birthday and time to recover from a downturn shrinks. Parents who want exposure to Trump accounts have no legal way to rebalance into fixed income inside the account before that age threshold. The following comparison lays out the core differences between the mandated approach and a traditional diversified account a family might otherwise choose.

Does the Modern Era Guarantee Continue Long Enough for a Child's Timeline?

The open question is whether the last third of U.S. financial history, the one stretch where stocks reliably beat bonds over 50 year windows, keeps holding for the specific 18 year window a given child faces. History offers no such guarantee, and McQuarrie's data shows regimes can persist for decades before shifting. Parents funding these accounts are making a directional bet on markets, not a diversified savings plan, whether they intend to or not.