The Capital Gains Tax Shock Nobody Warns You About: State Taxes
Most people think capital gains tax works like this:
You buy stock.
You sell stock.
You pay the IRS.
You move on with your life.
That mental model is neat, tidy—and dangerously incomplete.
For millions of investors, the real punch doesn’t come from the federal government at all. It comes later, from their state, quietly and efficiently carving out its share of the profit you already thought you’d accounted for.
State capital gains taxes are the most underestimated cost in investing. They’re rarely discussed, poorly understood, and in high-tax states, they can rival—or even exceed—your federal bill. If you’ve ever sold stock and thought, “Wait… why is my tax bill so much higher than I expected?” this is usually the missing piece.









