Sell a stock, a rental house, or even a chunk of a family business, and the IRS wants a cut of the profit.
That cut is the capital gains tax, and the rate you pay depends less on how much you earned than on how long you held the asset.
The single biggest dividing line is one year.
Hold an investment for 12 months or less and the profit counts as short-term, taxed at your ordinary income rate — the same brackets that apply to your paycheck.
That can mean 22%, 24%, or higher depending on your total income for the year.
Hold it for more than a year and the profit qualifies as long-term.
For 2024, most filers fall into the 15% bracket, while those with lower taxable income pay 0% and the highest earners pay 20%.
The 0% tier surprises people every year: a retired couple living mostly on savings can often sell appreciated stock and owe nothing on the gain.
There's also a 3.8% net investment income tax that kicks in once modified adjusted gross income tops $200,000 for single filers or $250,000 for couples.
Add that on top of the 20% rate and the wealthiest investors can face a combined 23.8% on long-term gains.
What counts as a gain isn't just the difference between purchase and sale price.
Improvements to a rental property, certain closing costs, and reinvested dividends can raise your cost basis and shrink the taxable profit.
Homeowners get an extra break: up to $250,000 of profit on a primary residence is excluded from tax, or $500,000 for a married couple filing jointly, as long as you lived there two of the last five years.
Selling in December versus January can push a gain into a different tax year, and if you're near a bracket cutoff, a big sale can nudge other income into a higher tier.
Capital losses can offset gains dollar for dollar, and up to $3,000 of leftover losses can trim ordinary income each year.
One more wrinkle: a new 1% excise tax on stock buybacks took effect in 2023, and proposals to raise capital gains rates for high earners resurface in Congress regularly.
Nothing has changed yet for most filers, but the rules are not carved in stone.
Before you sell anything sizable, run the numbers or talk to a tax pro.
A few minutes of planning can be worth thousands at filing time.
The bottom line: the tax code rewards patience, and the gap between short-term and long-term rates is one of the few breaks ordinary investors can actually control.
Final Thoughts
If you're sitting on a winner, check the calendar before you click sell — the holding period may matter more than the headline rate.