The IRS released its 2025 inflation adjustments, and the numbers matter if you sold stocks, a rental property, or even a second home this year.
Long-term capital gains are still taxed at 0%, 15%, or 20% depending on your taxable income, but the income thresholds that decide which rate you pay crept higher.
For the 2025 tax year, the 0% rate applies to single filers with taxable income up to $48,350, up from $47,025 in 2024.
Married couples filing jointly get the 0% rate up to $96,700.
The 15% bracket stretches to $533,400 for singles and $600,050 for joint filers.
Anything above that lands in the 20% tier.
That 0% bracket is the most overlooked deal in the tax code.
If your income is low enough, you can sell appreciated assets and owe nothing on the gain.
Retirees living mostly on savings, part-time workers, and people between jobs can use this window deliberately—sometimes by selling assets in chunks across multiple years.
Capital gains stack on top of ordinary income.
A dollar of long-term gain doesn't get taxed in isolation—it fills the brackets after your wages, interest, and other ordinary income are counted.
A raise at work can push your investment gains from 0% into the 15% range without you realizing it.
The Net Investment Income Tax tacks a 3.8% surcharge onto capital gains, dividends, and interest once modified adjusted gross income tops $200,000 for singles or $250,000 for couples.
That's on top of the 20% top rate, pushing the effective federal hit to 23.8%.
Holding an asset longer than one year flips short-term gains—taxed at ordinary income rates as high as 37%—into the long-term schedule.
For someone in a high bracket, that single decision can cut the tax bill roughly in half on the same profit.
Most sellers can exclude up to $250,000 of gain on a primary residence, or $500,000 for couples, provided they lived there two of the last five years.
That exclusion shields a lot of everyday homeowners from capital gains entirely.
Wash sale rules are another trap worth knowing.
If you sell a stock at a loss and buy it back within 30 days, the IRS disallows the loss for tax purposes.
People trying to harvest losses near year-end get caught by this more often than you'd think.
If you're planning a sale, run the numbers before December 31, not after.
Bracket thresholds, estimated tax payments, and state rules all interact.
A short conversation with a tax professional usually costs less than the mistake.
One more thing: state taxes can swing the math hard.
Florida and Texas take nothing on capital gains.
California taxes them as ordinary income, up to 13.3%.
The federal rate is only part of your bill.
My take: the annual inflation adjustment is small, but it quietly widens the 0% window every year, and most Americans never use it.
Final Thoughts
If you have appreciated assets and a low-income year coming—a sabbatical, a layoff, early retirement—that gap year may be the cheapest time you'll ever have to sell.