How $60,000 Becomes an $8.8M Tax-Free Roth IRA

When I first heard about Trump Accounts, my reaction was: why would I set this up? No tax deduction going in. Taxed coming out. That is the worst of both worlds.

Then I looked at the Roth conversion math. And it changes everything.

Here is how you put $60,000 into a Trump Account for your child and set them up with a large tax-free Roth IRA at retirement. The long-run compounding is the point. The conversion-year tax is not $0 for most 18-year-olds.

The Trump Account Problem (and Why Most People Stop Here)

A Trump Account lets you contribute up to $5,000/year in after-tax dollars. The money grows tax-deferred in S&P 500 index funds. At age 18, it becomes a traditional IRA.

The problem:

• No deduction when you put money in (unlike a traditional IRA)
• Taxed as ordinary income when money comes out (like a traditional IRA)
• 10% penalty if withdrawn before 59½

You're getting the worst of a traditional IRA and the worst of a Roth IRA. But here is the fix.

The Fix: Convert to Roth — When the Rate Is Actually Low

When the Trump Account becomes a traditional IRA at age 18, you can convert it to a Roth IRA. After conversion, future growth can be tax-free. The cheap year is when the combined family rate is low — often after kiddie tax ends — not simply “they have no job at 18.”

Why Only the Growth Gets Taxed (The Pro Rata Rule)

This is the part most people miss. When you do a Roth conversion, the IRS applies the pro rata rule to figure out how much is taxable. Because Trump Account contributions are after-tax (you didn't get a deduction), they create nondeductible basis.

Here is the formula:

• Basis % = Total contributions ÷ Account balance = NOT taxed
• Growth % = (Balance − Contributions) ÷ Balance = taxed as ordinary income

The IRS does not let you cherry-pick which dollars to convert. Every dollar you convert is a proportional mix. But because most of the account is your after-tax contributions, most of each dollar converted is tax-free.

The Numbers: $60K In, $100K Balance

Let's say you have a 5-year-old. You contribute $5,000/year for 12 years. That is $60,000 you put in. At a 10% average return, the account grows to about $100,000 by age 17.

The Conversion Tax Is Not $0 at 18

Pro rata is still the right first step. In this example, 40% of each conversion is taxable. Convert $50,000 and $20,000 is taxable earnings. Many sites — including an earlier version of this page — then subtract a $15,000–$20,000 single standard deduction and print $0 tax.

That only works for an independent filer. A typical 18-year-old with no job is still a Form 8615 child. Their standard deduction is about $1,350. Earnings above about $2,700 are taxed at the parent’s rate.

Do that two years in a row and the conversion tax is on the order of $8,000+. If the parent is in 32–37%, it is worse. If they are already in 10–12%, kiddie tax barely matters.

The $50,000-per-year / $0-tax math is real after they leave the kiddie-tax years (often age 24, or when wages cover more than half of support). It is not the default for a supported 18-year-old. Full walkthrough: does the kiddie tax apply?

From $100K to $8.8 Million

Now your child has a $100,000 Roth IRA at age 19 or 20. They do not need to add another dollar. If they leave it invested at the S&P 500's historical 10% average return, here is what happens:

$8.8 million. Tax-free after it is a Roth. That is the compounding story if they leave it invested. It does not require a $0 conversion tax at age 18.

This Works for Everyone

Unlike a Kids Roth IRA (which requires earned income), the Trump Account strategy has no income requirement to contribute. Anyone can put in $5,000/year. The Roth conversion also does not require earned income. Zero wages still does not mean zero tax on the conversion.

You can also do this alongside a 529 plan, a Kids Roth IRA (if they have earned income), and a Coverdell Education Savings Account. These are separate strategies with separate limits.

What About Other Account Types?

Do not think of the Trump Account as a college savings account. Use a 529 for that. The Trump Account is a wealth-building strategy designed for long-term compounding through a Roth IRA.

Once it is a Roth IRA, your child can invest in anything — real estate, crypto, individual stocks, private companies. They are no longer limited to S&P 500 funds. That flexibility, combined with tax-free growth for 40+ years, makes this the most powerful account a young person can have.

What to Do Right Now

1. Open a Trump Account as soon as they're available (July 2026 via trumpaccounts.gov, or file IRS Form 4547 with your 2025 tax return).
2. Contribute $5,000/year by December 31 each year.
3. After 18, check kiddie tax and dependency. Use the Roth Conversion Calculator in “supported student” mode first.
4. Convert when the combined rate is lowest — often after Form 8615 no longer applies — not automatically at 18.
5. Leave the Roth IRA alone and let compounding do the work.

For the full deep dive, see the Roth Conversion Strategy pillar guide. To model your specific numbers, use the Roth Conversion Calculator.