Missouri brokerage account growth calculator

What a taxable index-fund account is actually worth after expense-ratio drag and after Missouri takes its share of the gain — which, in most states, is not at the federal preferential rate.

Missouri excludes some or all of a long-term gain

Missouri lets some or all of a long-term gain escape state tax, which is unusual and worth planning around. 100% OF CAPITAL GAINS ARE DEDUCTED FROM MISSOURI INCOME — short-term and long-term alike, with no dollar cap, no percentage cap, and no income phase-out. Mo. Rev. Stat. 143.121.3(14)(a), enacted by HB 594 (2025): 'For all tax years beginning on or after January 1, 2025, one hundred percent of all income reported as a capital gain for federal income tax purposes by an individual subject to tax pursuant to section 143.011'. No holding-period qualifier appears, and the Department operationalizes it at federal Form 1040 line 7a, the combined net figure that makes no short/long distinction. Two real constraints: a capital LOSS creates no subtraction (the instructions direct entering $0 rather than a negative), and the deduction is for INDIVIDUALS only — the Department has confirmed it does not reach fiduciaries, pass-through entities paying PTE tax, or corporations. The corporate version at 143.121.3(14)(b) switches on only once Missouri's top rate falls to 4.5% or below, which has not happened for 2026. Missouri is consequently one of the most favourable states in the country for realizing gains.