Trump Accounts in California: State Tax Treatment

California's general conformity date doesn't reach OBBBA

California conforms to the Internal Revenue Code as of a fixed date, not automatically as federal law changes. That date is currently January 1, 2025 — Cal. Rev. & Tax. Code § 17024.5(a)(1)(Q) sets it in exactly those terms: "For taxable years beginning on or after January 1, 2025 ........................ January 1, 2025." The Legislature moved the date forward to this point from January 1, 2015 by SB 711 (Stats. 2025, Ch. 231), effective October 1, 2025 — the first general conformity update in a decade.

January 1, 2025 is still before July 4, 2025, the date the One Big Beautiful Bill Act (OBBBA, Public Law 119-21) was enacted and created IRC §530A. California's general conformity mechanism therefore does not, by itself, pick up Trump Accounts at all — the same reasoning Grant Thornton's own coverage of SB 711 reached, confirmed here against the statute's own text rather than taken from that summary. Before any further legislative action, a Trump Account had no special status under California law: it was not treated as a tax-deferred retirement account the way federal law treats it, so growth inside the account was taxable as ordinary California investment income in the year realized, and employer contributions were included in California taxable wages the same as any other compensation.

SB 180: a standalone fix, not a conformity-date update

California addressed this with a second, separate bill rather than by moving its general conformity date again. SB 180 (2025-2026 Regular Session) was approved by the Governor and filed with the Secretary of State on July 13, 2026, chaptered as Stats. 2026, Chapter 85. It adds three new sections to the Revenue and Taxation Code, each operative for taxable years beginning on or after January 1, 2026 — the tax year before a Trump Account could actually first receive contributions (the federal statute bars real funding before July 4, 2026), so California's fix is in place before the account type exists in practice, not playing catch-up after the fact.

Revenue and Taxation Code § 17151.1 conforms California to IRC §128 as it relates to employer contributions to 530A accounts. Section 17151.2 conforms to IRC §139J as it relates to certain contributions to 530A accounts. Section 17509.5 is the substantive core: it states that IRC §530A "shall apply, except as otherwise provided" for California purposes, for taxable years beginning on or after January 1, 2026 — meaning California generally follows the federal tax-deferred, IRA-style treatment of a Trump Account's contributions and growth, subject to three specific carve-outs below.

Where California's version differs from the federal rule

Section 17509.5 does not adopt §530A wholesale — it names three specific modifications, each verified directly against the chaptered bill text:

1. A different rate on the early-distribution additional tax. Federal law imposes an additional tax under IRC §530A(d)(2) on certain distributions taken before the beneficiary's IRA rules would otherwise allow it, at the federal statutory rate. California substitutes its own rate: "a rate of 2.5 percent" applies for California purposes in place of whatever the federal provision would otherwise impose. A family comparing the federal and California tax bills on the same early distribution should expect two different numbers, not the same one applied twice.

2. One federal exception does not apply in California. IRC §530A(d)(5)(C) — a federal provision addressing the correction of excess contributions by distribution — is expressly excluded: California's statute states it "shall not apply." Practically, this means California does not automatically mirror the federal mechanism for treating a corrective excess-contribution distribution as exempt from the additional tax the way federal law does; a California-specific analysis is needed for that scenario rather than assuming the federal answer carries over.

3. The federal trustee-selection provision does not apply either. IRC §530A(g) — the provision governing which financial institutions may act as a Trump Account trustee — "shall not apply" for California purposes. This is a narrower, more technical carve-out than the other two and is unlikely to change what a typical family experiences, but it means California's statute does not incorporate the federal trustee-eligibility framework by reference.

Separately, California requires its own paperwork trail: the statute requires that a copy of "the report required to be filed with the Secretary of the Treasury" (the federal information return a Trump Account trustee files) also be filed with the Franchise Tax Board. This is a compliance obligation on the trustee/custodian side, not a new burden on the family, but it is worth a tax professional confirming a client's account custodian is actually doing before assuming California-side reporting is happening automatically.

What this means for a California family, practically

For a Trump Account funded and growing during a taxable year beginning on or after January 1, 2026, California now follows the federal deferral: contributions and investment growth are not separately taxed by California each year the way ordinary non-deferred investment income would be. That is the headline "California families won't owe annual tax" outcome some 2026 coverage described — accurately, as far as it goes, but only for tax years 2026 forward, and only with the three modifications above layered on top of the federal rule rather than a straight pass-through of it.

The practical exceptions to know: an early distribution that triggers the additional tax is taxed at California's own 2.5% rate, not simply whatever the federal rate produces: run both computations rather than assuming they match. A corrective distribution of an excess contribution should not be assumed exempt from California's additional tax the way it may be exempt federally, since California's statute specifically declines to adopt that federal exception. And for tax years before 2026 — including the $1,000 federal pilot deposit many eligible children born 2025-2028 receive — the earlier, less favorable state of California law (no special conformity, ordinary income treatment) is what applies, since SB 180's fix is not retroactive before January 1, 2026.