Planning Tool · Custodial Accounts

Child Investment
Account Calculator

See how consistent investing on behalf of a child can compound into a meaningful head start. Model UGMA/UTMA or custodial Roth IRA growth from birth to adulthood with real return assumptions.

HOW TO USE THIS TOOL

Choose the account type (UGMA/UTMA or Custodial Roth IRA).

Enter the initial deposit, monthly contribution, and expected annual return.

Set the child’s current age and your target end age.

The calculator projects the final balance and total contributions vs. growth.

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Child's Age

years old

Starting Balances

Trump Account iA new tax-advantaged investment account for children created under the TRUMP Act. Contributions are capped at $5,000 per year. Funds grow tax-free and can be accessed at age 18.

529 College Savings iContribution limits for 529 plans are set by each state, not by the IRS. States' total contribution caps vary widely, but many fall in the range of roughly $300,000 to $550,000 per beneficiary. Check your specific state's 529 plan for its current limit.

Custodial Roth iA Roth IRA opened on behalf of a minor. Contributions are made with after-tax dollars and grow tax-free. The child must have earned income, and contributions cannot exceed their earned income for the year.

UGMA iUniform Gifts to Minors Act account. A custodial account with no contribution limits. Assets transfer to the child at the age of majority. Investment gains may be subject to the kiddie tax.

Total Starting Balance iSum of all four account starting balances. Editing this value will pro-rata adjust each account's starting balance based on their current proportions, respecting individual account caps.

Growth & Contributions

Growth Rate iThe expected annual rate of return on investments across all accounts. Historical stock market average is ~7-10%.

Total Annual Contribution iTotal amount contributed across all accounts per year. This is distributed proportionally based on starting balances, respecting each account's contribution cap.

Projected Outcome

Target Future Value at 18 iThe projected total value of all accounts at age 18. Editing this value will reverse-calculate and pro-rata adjust each account's starting balance based on current proportions, keeping contributions and growth rate fixed.

Contribution Caps:
Trump Account: $5,000/yr | 529: $300,000 - $500,000/yr | Custodial Roth: $7,500/yr | UGMA: Uncapped

Age 1 — Current Allocation

Adjust Today's Amounts — Watch Tomorrow's Wealth Grow

$6,950

Drag slice edges to reallocate

Age 18 — Future Value

Set Your Future Target — Discover What It Takes Today

$330,356

Drag slice edges to reverse-calc

Account	Starting	Annual Contrib	Age 18 Value	% of Total

Disclaimer: This calculator is for illustrative purposes only and does not constitute financial advice. Actual returns will vary. Contribution caps and tax rules are subject to change. Consult a qualified financial advisor for personalized guidance.

Child InvestmentAccount Calculator

Child Investment
Account Calculator