Tax

Basis (Trump Account)

Definition

The after-tax individual contributions to a Trump Account that can be withdrawn tax-free in retirement, as distinct from the taxable government seed, employer match, and growth.

Key Takeaways

  • Basis = only the after-tax dollars contributed by individuals (parents, relatives, friends).
  • Government seed ($1,000), employer contributions, and ALL growth are NOT basis: fully taxable.
  • Withdrawals use a pro-rata formula: each dollar withdrawn is proportionally basis + taxable.
  • Over decades of compounding, basis becomes a tiny percentage of total value (typically 1-3% by age 65).
  • Pair with a Roth IRA once the child has earned income for tax-free diversification.

Detailed Explanation

Here is the tax split that catches most parents off guard: when your child eventually withdraws from their Trump Account (after it converts to a Traditional IRA at 18), not everything gets taxed the same way.

Only the money YOU personally contributed with after-tax dollars — what the IRS calls "basis" — comes out tax-free. Everything else (the $1,000 government seed, employer contributions, and decades of investment growth) is taxable as ordinary income when withdrawn.

The IRS uses a pro-rata formula: each withdrawal is partly tax-free (basis portion) and partly taxable (non-basis portion), proportional to the ratio of basis to total account value.

Running the numbers for a real scenario

Meet Priya. Her parents contributed $4,000/year for 18 years = $72,000 total basis. The account also received $1,000 in federal seed money and $18,000 in employer contributions. At age 65, the account has grown to $4,200,000.

  • Tax-free basis: $72,000 (1.7% of the total)
  • Taxable portion: $4,128,000 (98.3%)

At a 22% retirement tax rate, Priya owes roughly $908,160 in taxes on her withdrawals. The basis saves her about $15,840 in taxes ($72,000 × 22%). Not nothing, but the vast majority of the account is taxable.

Why this matters for planning

The basis ratio shrinks over time as growth dominates. After 47 years of compounding (age 0 to 65), your original contributions become a tiny fraction of the total. This is why some families pair a Trump Account with a Roth IRA (which grows 100% tax-free) once the child has earned income.

After 65 years of compounding, the original $72,000 in parent contributions (basis) is just 1.7% of the $4.2M total. The rest, seed, employer match, and growth, is fully taxable.
Verified Financial TermReviewed & verified by Galvin Mendonca, Finance Researcher
All figures from primary government sources. Last updated July 2026.

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Sources & references

The rules and figures on this page are researched from official primary sources:

Disclaimer: Definitions and explanations on this glossary page are provided strictly for general educational and informational purposes. They do not constitute formal financial, investment, legal, or tax advice. Financial regulations, caps, and limits change frequently. Always consult a qualified professional before making any financial decisions.