Trump Accounts in Montana: State Tax Treatment
By Forrest Baumhover, CFP®, EA · Last verified September 2, 2026
Whether Montana taxes a Trump Account's growth and distributions the way the IRS does — checked against Montana's own conformity law, not a national summary.
Does Montana follow the federal rule?
Montana uses "rolling" (current) conformity: its income tax code follows the Internal Revenue Code as it currently stands, not a fixed historical date. A federal change — including §530A, added by the One Big Beautiful Bill Act (OBBBA, Public Law 119-21, enacted July 4, 2025) — applies for Montana income tax purposes the same way it does federally, without the legislature needing to act separately, unless Montana has specifically decoupled from that provision.
What this means for a Trump Account in Montana
Based on that mechanism, Montana currently follows the federal §530A treatment: contributions and growth are not separately taxed by the state before distribution, the same deferral the federal rule provides.
A note on this determination
Rolling conformity; Montana AGI starts from federal AGI. A Montana foster-care initiative helps youth open Trump Accounts, but that is a benefits program, not tax conformity legislation. No Montana bill or DOR notice specifically addresses §530A.
Back to the full picture
See the Trump Accounts hub for the federal contribution and distribution rules this state-tax determination builds on, and the state-by-state conformity library for how Montana compares to other states.