Why This Strategy Deserves a Dedicated Conversation With Every Family-Business Client
The custodial Roth IRA is not a gimmick. It is a legitimate, IRS-sanctioned retirement account that any minor with earned income can fund. The tax math is staggering: a $7,500 contribution made for a 10-year-old, growing at a historical 8% average annual return, becomes approximately $1.1 million by age 65 — entirely tax-free under IRC §408A(d)(1). No other single-year action a practitioner can recommend produces a comparable lifetime outcome per dollar contributed.
The strategy is especially powerful for clients who own businesses and employ their children (IRC §73 / §3121(b)(3)). The child earns wages, pays little or no income tax on those wages (the standard deduction for 2026 is $16,100), and the wages are then contributed to a Roth IRA. The family gets a business deduction, the child gets a Roth IRA funded with pre-tax dollars, and the IRS gets almost nothing.
Practitioners who do not proactively raise this strategy with every business-owner client who has minor children are leaving a significant value gap in their advisory relationship.
The Earned Income Requirement — The Only Real Constraint
Under IRC §219(b)(1), a Roth IRA contribution cannot exceed the lesser of the annual limit ($7,500 for 2026) or the individual's taxable compensation for the year. For a minor, "taxable compensation" means earned income — wages, salaries, tips, net self-employment income. Passive income (dividends, interest, capital gains, gifts) does not qualify.
This means the child must actually work and receive legitimate compensation. The IRS scrutinizes family employment arrangements closely, and practitioners must ensure three things are in place:
1Genuine services performed. The child must actually do the work — social media management, filing, cleaning, modeling for marketing materials, data entry. Document the job description in writing.
2Reasonable compensation. Pay must be at the market rate for the services performed — what you would pay a non-family employee for the same work. Overpaying a 12-year-old $50/hr for filing is a red flag.
3Proper payroll documentation. Issue a W-2 (or 1099-NEC if self-employed), withhold appropriately, and file payroll returns. The paper trail is what makes the strategy bulletproof under audit.
Custodial Account Mechanics — How the Account Actually Works
Because a minor cannot legally enter into contracts, the Roth IRA must be established as a custodial account. A parent or guardian acts as custodian until the child reaches the age of majority (18 or 21 depending on state law), at which point the account automatically converts to a standard individual Roth IRA in the child's name.
Most major custodians (Fidelity, Schwab, Vanguard) offer custodial Roth IRAs with no minimum balance and no account fees. The account is titled in the child's name with the parent listed as custodian. The child's Social Security number is used for tax reporting purposes.
Contribution source: the contribution does not have to come from the child's own paycheck. The parent can make the contribution on the child's behalf, provided the child has sufficient earned income to support the contribution. This is a critical planning point — the child can spend their wages and the parent funds the Roth IRA separately, as long as the child's earned income equals or exceeds the contribution amount.
2026 Contribution Limits and Income Thresholds
| Parameter | 2026 Figure | IRC Authority |
|---|
| Annual Roth IRA contribution limit | $7,500 | §408A(c)(2) |
| Maximum contribution (if earned income < $7,500) | 100% of earned income | §219(b)(1) |
| Roth IRA MAGI phase-out (single) | $153,000 – $168,000 | §408A(c)(3) |
| Standard deduction (single, 2026) | $16,100 | §63(c) |
| Federal income tax on wages up to $16,100 | $0 | §63(c) |
| Kiddie tax threshold (unearned income) | $2,700 | §1(g) |
Note: The MAGI phase-out applies to the child's own MAGI, not the parent's. A minor with only earned income will almost never be subject to the phase-out. Source: IRS Rev. Proc. 2025-32.
The Compounding Math — Why Starting Early Is Everything
Worked Example: $5,000/yr from Age 10 to 18 (8 years)
Total contributions: $40,000 over 8 years
Account value at age 65 (47 years of compounding at 8%): approximately $1.6 million
Tax owed on withdrawal: $0 (qualified distribution under §408A(d)(1))
Equivalent pre-tax value at 24% bracket: $2.1 million
Compare this to the same $40,000 invested in a taxable account: at 8% annual return with 15% annual capital gains drag, the after-tax value at age 65 is approximately $890,000 — less than half the Roth outcome.
Implementation Checklist for Practitioners
1Confirm earned income. Review the child's W-2 or 1099-NEC. If the child is employed by a family business, verify payroll records, job description, and time logs.
2Determine contribution amount. Contribution is the lesser of $7,500 or the child's total earned income for the year. Confirm the child's MAGI does not exceed the phase-out (extremely rare for minors).
3Open custodial Roth IRA. Fidelity, Schwab, and Vanguard all offer no-fee custodial Roth IRAs. Parent/guardian is listed as custodian. Use the child's SSN.
4Make the contribution before the tax deadline. Contributions for a given tax year can be made up to April 15 of the following year (or the extended deadline if an extension is filed).
5Invest in growth assets. Given the 40–55 year time horizon, the account should be invested in 100% equities (broad index funds). This is one of the few situations where maximum equity exposure is clearly appropriate.
6Document the strategy in the client file. Note the contribution amount, source of earned income, and custodian. Review annually and increase contributions as the child's earned income grows.
Interaction With the Hire-Your-Children Strategy
The custodial Roth IRA is most powerful when combined with the hire-your-children strategy (IRC §73 / §3121(b)(3)). When a sole proprietor or single-member LLC employs their minor child, wages paid to the child are exempt from FICA taxes (Social Security and Medicare) — a 15.3% savings on top of the income tax benefit. The child earns wages, pays zero federal income tax (wages below the $16,100 standard deduction), and those wages are contributed to a Roth IRA. The business gets a deduction, the child gets a Roth IRA, and the family's overall tax burden drops significantly.
For a client paying their 14-year-old $7,500/yr in legitimate wages: the business deducts $7,500 (saving $2,625 at 35% combined rate), the child pays $0 income tax, and $7,500 enters a Roth IRA that will be worth over $1 million at retirement. The net cost to the family is approximately $4,875 — for a $1 million+ asset.
Withdrawal Rules — What Practitioners Must Know
| Withdrawal Type | Tax Treatment | Penalty | Condition |
|---|
| Contributions (basis) | Tax-free | None | Any time, any age |
| Earnings — qualified distribution | Tax-free | None | Account age 5+ years AND age 59½+ |
| Earnings — non-qualified | Ordinary income | 10% | Before age 59½ or account < 5 years |
| First home purchase (§72(t)(2)(F)) | Tax-free earnings | None | Up to $10,000 lifetime, account 5+ years |
| Disability (§72(m)(7)) | Tax-free earnings | None | Permanent disability |
The 5-year holding period for earnings begins January 1 of the year the first contribution is made. A contribution made in 2026 starts the clock on January 1, 2026 — the account satisfies the 5-year rule on January 1, 2031, regardless of when in 2026 the contribution was made.
Common Mistakes and How to Avoid Them
| Mistake | Consequence | Prevention |
|---|
| Contributing more than the child's earned income | 6% excise tax per year on excess (§4973) | Verify W-2/1099 before contributing; contribute in December when full-year income is known |
| No documentation of child's work | IRS disallows wages; contribution becomes excess; payroll taxes assessed | Job description, time logs, pay stubs, W-2 |
| Paying unreasonably high wages | IRS recharacterizes excess as gift; payroll taxes and penalties | Pay market rate; document comparable wages for similar work |
| Investing in conservative assets | Dramatically reduced long-term outcome | 100% equity allocation appropriate given 40–55 year horizon |
| Forgetting to file the contribution on the child's tax return | No direct reporting required, but Form 5498 from custodian confirms; ensure client retains | Keep Form 5498 in client file for basis tracking |
Frequently Asked Questions
Can a child contribute to a Roth IRA if they are self-employed (e.g., mowing lawns, babysitting)?
Yes. Net self-employment income qualifies as earned income for Roth IRA contribution purposes. The child must report the income on a Schedule C and pay self-employment tax on net earnings over $400. The contribution limit is the lesser of $7,500 or net self-employment income after the SE tax deduction. Practitioners should file Schedule SE and Form 1040 for the child even if no income tax is owed, to establish the earned income record for the Roth IRA contribution.
Does the child have to file a tax return to contribute to a Roth IRA?
Not necessarily — there is no IRS requirement to file a tax return solely to make a Roth IRA contribution. However, if the child has self-employment income over $400, a return is required. If the child is employed by a family business and receives a W-2, a return may not be required if wages are below the filing threshold ($16,100 for 2026 for a single filer). Best practice is to file a return anyway to document the earned income and create a paper trail for the Roth IRA contribution.
What happens to the custodial Roth IRA when the child turns 18 (or 21)?
The account automatically converts from a custodial account to a standard individual Roth IRA in the child's name. The custodian's control ends. The child gains full ownership and can make investment decisions independently. The account retains all its tax characteristics — the 5-year clock continues, the basis carries over, and qualified distributions remain tax-free. No action is required to trigger the conversion; it happens automatically at the age of majority under state law.
Can the parent contribute to the Roth IRA on the child's behalf?
Yes. The contribution does not have to come from the child's own funds. A parent, grandparent, or any third party can make the contribution on the child's behalf, provided the child has sufficient earned income to support the contribution. The contribution is treated as a gift from the parent to the child — it counts toward the annual gift exclusion ($19,000 for 2026) if it exceeds that amount, but a $7,500 Roth IRA contribution is well within the annual exclusion.
Is there a minimum age for a Roth IRA?
No. The IRC imposes no minimum age for Roth IRA contributions. The only requirement is earned income. A 5-year-old who earns $500 modeling for a family business can contribute $500 to a Roth IRA. In practice, most custodians require the custodian (parent) to be at least 18 to open the account, but there is no IRS-imposed age floor.
What is the kiddie tax and does it affect the Roth IRA strategy?
The kiddie tax (IRC §1(g)) taxes a child's unearned income above $2,700 (2026) at the parent's marginal rate. However, the kiddie tax applies only to unearned income — dividends, interest, capital gains. Wages and self-employment income are not subject to the kiddie tax. The Roth IRA strategy is built on earned income, so the kiddie tax is not directly relevant. However, practitioners should be aware that investment income inside the Roth IRA is not currently taxable (it grows tax-deferred), so the kiddie tax does not apply to Roth IRA earnings either.
More Tax Planning FAQs
What is the IRS audit risk for this strategy?
The IRS audit rate for individual returns is approximately 0.4% overall, but increases significantly for returns with Schedule C income, large deductions, or specific strategies. Proper documentation is the best defense against an audit. Keep contemporaneous records, maintain written agreements, and ensure all deductions are supported by receipts and business purpose documentation.
How does this strategy interact with the alternative minimum tax (AMT)?
Many tax strategies that reduce regular income tax can trigger or increase AMT liability. Common AMT triggers include: ISO exercises, large state tax deductions, accelerated depreciation, and passive activity losses. Taxpayers should model both regular tax and AMT before implementing aggressive tax strategies to ensure the net benefit is positive.
What is the statute of limitations for IRS assessment of this strategy?
The IRS generally has three years from the later of the return due date or filing date to assess additional tax. If the taxpayer omits more than 25% of gross income, the statute is extended to six years. There is no statute of limitations for fraudulent returns or failure to file. Taxpayers should retain tax records for at least seven years to cover the extended statute of limitations.
How should this strategy be documented to withstand IRS scrutiny?
Documentation is the cornerstone of any tax strategy. Maintain contemporaneous records (created at the time of the transaction), written agreements, business purpose statements, and receipts. For strategies involving related parties, ensure all transactions are at arm’s length and documented with fair market value support. The burden of proof is on the taxpayer to substantiate deductions.
What is the economic substance doctrine and how does it apply?
The economic substance doctrine (§7701(o)) requires that transactions have both objective economic substance (a reasonable possibility of profit) and subjective business purpose (a non-tax reason for the transaction). Transactions that lack economic substance are disregarded for tax purposes, and the 40% strict liability penalty applies. Legitimate tax planning strategies must have genuine business purposes beyond tax reduction.
How does this strategy affect state income taxes?
Federal tax strategies do not always produce the same results at the state level. Some states do not conform to federal tax law changes (e.g., bonus depreciation, QSBS exclusion). Taxpayers should model the state tax impact of any federal tax strategy, especially in high-tax states like California, New York, and New Jersey. Some strategies may save federal taxes while increasing state taxes.
What is the step-transaction doctrine and how does it apply?
The step-transaction doctrine allows the IRS to collapse a series of related transactions into a single transaction if the intermediate steps have no independent significance. This doctrine is used to prevent taxpayers from using artificial multi-step transactions to achieve tax results that would not be available in a single transaction. Legitimate tax planning strategies should have independent business purposes for each step.
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