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Short answer: Biden’s capital-gains “hike” was a proposal in his fiscal year 2025 budget, not an automatic change to your tax bill. It would have applied ordinary income-tax rates to certain long-term gains and qualified dividends above specified taxable-income thresholds. The often-cited 44.6% figure combined that idea with other proposed tax increases; it was not a flat rate on every investor’s gains.
Did Biden raise the capital gains tax?
No. The proposal appeared in the Biden administration’s fiscal year 2025 budget and Treasury’s accompanying Greenbook. A budget proposal describes policy the administration wants; it does not, by itself, change federal tax law. Treasury explains the Greenbook’s role on its tax policy page.
That distinction matters when interpreting headlines about a “hike.” The figures below describe proposed changes, not rates that automatically apply to your current return.
What the proposed rate change would have done
Treasury proposed taxing long-term capital gains and qualified dividends at ordinary income-tax rates for the portion of taxable income above $1 million. For married taxpayers filing separately, the proposed threshold was $500,000. The thresholds were to be adjusted for inflation after 2024. These were taxable-income thresholds, not a rule that would re-tax all income or all gains once someone crossed the threshold. The proposal is described in Treasury’s FY2025 Greenbook.
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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →In practical terms, the proposal targeted the amount of taxable income above the applicable threshold. Whether a person would have been affected would depend on taxable income and filing status, as well as the type of income and other applicable tax rules. It was not a general increase for every person who sold an investment.
What does the 44.6% capital gains tax figure mean?
The 44.6% figure was a proposed top marginal rate in a scenario that combined multiple changes—not the standalone rate for the capital-gains provision and not a flat tax on all gains.
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- Treasury described 37% as generally the highest ordinary rate in the capital-gains proposal.
- Including the existing net investment income tax (NIIT), the figure was 40.8%.
- The Greenbook’s 44.6% figure reflected the capital-gains proposal together with separate proposed changes: a 39.6% top ordinary rate and a 1.2-percentage-point increase to NIIT above $400,000.
Those figures refer to top marginal treatment of long-term gains and qualified dividends in the relevant income range. A marginal rate applies to the portion of income in that range, not retroactively to every dollar of income or every investment gain. Treasury explains the combined scenario in the Greenbook.
What are the federal capital gains rules for tax year 2025?
For tax year 2025, the IRS says most net capital gain is taxed at no more than 15% for most individuals. That is a general description, not a personalized rate: income, filing circumstances, special rules, and other taxes can change the result. Net short-term gains are generally taxed as ordinary income. The IRS summarizes these rules in Topic No. 409, Capital Gains and Losses.
Capital gains are generally categorized by how long an asset was held. Short-term gains generally involve assets held for one year or less; long-term gains generally involve assets held longer. Capital losses and carryovers can affect net gain. The precise tax treatment depends on the applicable rules and the taxpayer’s full circumstances, so the 2025 summary should not be treated as a calculation for another tax year or a substitute for checking current IRS guidance.
Would the proposal have affected your taxes?
The threshold proposal was aimed at high taxable income, but the outcome for any individual would have depended on more than a headline income figure. The relevant details include:
- Tax year: the proposed policy was part of the FY2025 budget; it is not the same as the rules that apply to a particular filing year.
- Filing status and taxable income: the proposed threshold differed for married filing separately, and the test concerned taxable income.
- Type and holding period: the rate proposal covered long-term capital gains and qualified dividends; short-term gains are generally taxed as ordinary income under the IRS’s tax-year 2025 summary.
- Other investment income and taxes: NIIT is distinct from the base capital-gains rate and contributed to the higher combined figures.
- Losses and carryovers: these can affect the net amount of capital gain subject to tax.
The federal sources cited here do not establish a state-tax result. State rules are separate, so a federal proposal or federal rate summary should not be read as a statement about state tax.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Would the proposal have taxed unrealized gains when someone dies?
A separate part of the budget proposed treating certain transfers of appreciated property by gift or at death as realization events. Under that proposal, gain would generally be measured using the property’s fair market value at the time of transfer compared with the owner’s basis. This was a proposal about when gain is recognized on a transfer, not the same provision as raising the rate on a realized sale. Treasury describes the transfer proposal in its FY2025 Greenbook.
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How to find the rate that applies to you
For a personal estimate, use the IRS guidance and forms for the tax year in question, accounting for filing status, taxable income, holding period, net gains and losses, and any applicable additional taxes. A general 2025 summary cannot establish an individual’s rate for a later year or account for every special circumstance. For a decision with significant tax consequences, consult a qualified tax professional.
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