Missouri Moves to Eliminate Capital Gains Tax

Missouri is on the verge of a bold tax policy shift: becoming the first U.S. state to fully eliminate capital gains taxes on individual income. The legislation, passed by the Republican-controlled state legislature and backed by Governor Mike Kehoe, would exempt income earned from the sale of stocks, real estate, and other investment assets.

If enacted, the law could reshape Missouri's attractiveness to high-net-worth individuals and investors, while also raising questions about budget trade-offs and fairness. It follows a wave of tax cuts extensions at the federal level that have emboldened states to pursue more aggressive tax reduction strategies.

What the New Law Does

The proposal fully exempts capital gains income from Missouri state income tax for individual taxpayers. That includes gains from:

• Stocks and mutual funds
• Real estate held for investment
• Business interests and privately held assets
• Other capital assets sold at a profit

Currently, Missouri taxes capital gains as ordinary income at a flat 4.95% rate. Under the new law, these gains would be excluded from taxable income, starting in the next tax year.

The Fiscal Impact

The Missouri Department of Revenue estimates the annual cost of the repeal will range from $262 million to $600 million, depending on asset sales and market activity. Critics point out:

• The majority of capital gains are realized by the top 5% of income earners
• The repeal could significantly reduce revenue for public services, education, and infrastructure
• Missouri already has a structural deficit that could widen if revenues drop without offsetting cuts

Supporters argue the change will:

• Make Missouri more competitive with states like Florida and Texas. States like Mississippi and Kentucky have similarly moved to eliminate personal income taxes to compete for residents and investment.
• Attract investment from retirees and entrepreneurs
• Spur local reinvestment of capital gains

Why It Matters for Tax Professionals

For CPAs, tax advisors, and financial planners, this change presents both opportunities and planning considerations:

• Timing capital asset sales: Clients with exposure to both Missouri and other states may benefit from strategic timing of transactions
• Residency questions: This policy could accelerate client interest in establishing Missouri residency. Advisors should also review clients' estate planning and trust structures in light of this new exemption.
• Tax planning for multi-state clients: Advisors will need to coordinate state-specific sourcing rules, especially for real estate and pass-through income
• Startup and early-stage investors: Clients holding QSBS or startup equity may find Missouri residency especially advantageous if capital gains on those assets would otherwise be fully taxable at the state level.

National Implications

While many states provide partial exemptions for long-term gains or gains on certain in-state assets, Missouri would be the first to go all-in on a full exemption for all individual capital gains.

This may inspire copycat legislation in other states looking to boost investment and retain wealth — particularly those in the Midwest or Southeast.

Final Thought

Missouri's capital gains tax repeal represents a significant departure from traditional state income tax policy. Whether it drives growth or deepens budget deficits remains to be seen — but for tax professionals, the planning landscape just got more interesting.

At Bizora AI, we'll continue monitoring state-level tax shifts that affect wealth planning, compliance, and advisory services.