Married couples filing jointly who keep their taxable income below $98,900 in 2026 will owe zero federal tax on long-term capital gains realized that year. The IRS confirmed the threshold in its annual inflation-adjustment announcement, which for the first time incorporates changes from the legislation known as the One, Big, Beautiful Bill. Returns for tax year 2026 will be filed in 2027, giving households a defined planning window to time asset sales before brackets shift again.
How the 2026 zero-rate bracket reaches $98,900 for joint filers
The federal tax code has long applied preferential rates to net capital gains held longer than one year. Under Section 1, long-term gains face a three-tier structure of 0%, 15%, or 20%, with the applicable rate determined by where a filer’s income falls after ordinary income is accounted for. The statute also requires that these thresholds be adjusted annually for inflation, a mechanical process that widens the brackets each year even without new legislation.
What changed for 2026 is the interaction between that existing indexing formula and amendments introduced by the One, Big, Beautiful Bill. The IRS spelled out the combined effect in news release IR-2025-103, titled “IRS releases tax inflation adjustments for tax year 2026, including amendments from the One, Big, Beautiful Bill.” The detailed figures appear in Rev. Proc. 2025-32, which sets the $98,900 joint-filer ceiling for the 0% long-term capital gains rate.
A common misunderstanding is that the entire gain escapes tax if a couple’s income is near the line. That is not how the math works. Taxpayers compute the tax using the Qualified Dividends and Capital Gain Tax Worksheet included in the Form 1040 instructions. The worksheet stacks capital gains and qualified dividends on top of ordinary income. Only the portion of gains that fits inside the 0% bracket is taxed at zero; any excess spills into the 15% tier. A couple earning $90,000 in ordinary taxable income, for example, would have just $8,900 of room in the 0% band for long-term gains before the 15% rate kicks in.
What the bill’s amendments add to standard inflation indexing
Standard inflation adjustments alone would have widened the 0% bracket for 2026, but the new legislation accelerated the expansion. The IRS announcement explicitly ties the 2026 numbers to both the existing statutory formula and the bill’s amendments, though the agency has not published a side-by-side comparison showing how much of the increase comes from each source. Without that breakdown, the precise contribution of the bill versus routine indexing cannot be isolated from public documents alone.
The hypothesis that the 0% bracket is growing faster than wages, and therefore pulling more joint filers into tax-free territory for their gains, is plausible on its face. Wage growth has moderated from its 2022 peak, while inflation-indexed tax parameters tend to ratchet higher whenever prices rise. However, the IRS materials stop short of making any policy judgment. They simply implement the One, Big, Beautiful Bill’s instructions to adjust the capital gains thresholds using the same chained inflation index that already governs ordinary income brackets.
For households, the practical takeaway is that 2026 offers a somewhat larger “zero-rate window” than prior years, but not an unlimited one. Couples whose taxable income, including wages, interest, and other ordinary items, already approaches the $98,900 ceiling will see only modest additional room for tax-free gains. Those with more modest incomes, by contrast, may be able to realize substantially more long-term gains without triggering federal capital gains tax, especially if they can control the timing of sales across calendar years.
Planning around the 0% capital gains band
Because the 0% rate applies only to net long-term gains, taxpayers must also factor in any capital losses harvested during the year. As Topic No. 409 on capital gains explains, realized losses first offset realized gains, and only the net figure is subject to the preferential long-term rates. This means that strategic loss harvesting can create additional capacity to realize appreciated assets while staying under the $98,900 threshold.
Retirees and others with flexible income streams may find 2026 especially favorable for “filling up” the 0% bracket. For example, a couple living primarily on Social Security and modest withdrawals from tax-deferred accounts may be able to realize sizable gains from a taxable brokerage portfolio while still keeping total taxable income under the joint-filer ceiling. By contrast, dual‑earner households with high salaries may have little or no access to the 0% rate, even if they hold assets for more than a year.
Taxpayers should also remember that the federal brackets do not control state income tax. Many states tax capital gains as ordinary income, with no separate 0% band. Realizing gains up to the federal threshold can still generate a state tax bill, and in some jurisdictions, additional surtaxes apply to high-income investors regardless of federal treatment.
Finally, the 2026 thresholds are not permanent. The same inflation indexing that lifted the 0% ceiling to $98,900 for joint filers will continue to adjust the brackets in subsequent years, and future legislation could further alter the structure. For now, though, the combination of routine indexing and the One, Big, Beautiful Bill has created a clearly defined opportunity in 2026 for careful taxpayers to manage long-term capital gains exposure within a significantly expanded zero-rate band.
David M. Keller is a finance writer based in Columbus, Ohio, covering personal finance and consumer-focused economic topics. He earned his degree in journalism from Ohio University and began his career reporting on local business and economic trends for a regional media outlet. Since then, he has contributed to a variety of online publications, focusing on clear, practical coverage of topics such as cost of living, debt, and everyday financial decision-making.
