Short-Term vs. Long-Term Capital Gains for Day Traders

Hold something past the one-year mark, by design or by accident, and the tax treatment improves considerably. For 2026, long-term capital gains are taxed at 0%, 15%, or 20% depending on total taxable income:

Long-term gains stack on top of your ordinary taxable income the same way the ordinary brackets do. Take our two friends from the opening: both have $80,000 of other taxable income for the year. The one with the short-term gain adds $10,000 on top, landing that entire amount in the 22% bracket: $2,200 in tax. The one with the long-term gain adds the same $10,000, but since their combined $90,000 total clears the $49,450 threshold and stays well under $545,500, that portion lands in the 15% long-term bracket instead: $1,500. Same profit, same trader profile, a $700 difference from one detail: how many days the position was open.

For most day traders, the long-term table is close to irrelevant, since positions close too fast to ever reach the one-year mark. It becomes relevant the moment you also hold longer-term positions alongside your day trading account, which is common enough to be worth understanding rather than dismissing.

Very few traders have a year of pure winners, and the IRS runs a netting process before any rate gets applied, a step a lot of generic tax content skips.

Short-term gains and losses net against each other first, producing one net short-term figure. Long-term gains and losses net separately, producing one net long-term figure. If both land positive, each gets taxed at its own rate. If one category shows a net loss, it offsets the other category's gain before anything is taxed.

Here's the part that costs real money if you don't plan for it: if your net capital loss for the year still exceeds your gains after that offsetting, only $3,000 of it can reduce your ordinary income in a single tax year, $1,500 if married filing separately. Everything above that carries forward indefinitely. A trader who loses $18,000 net in one bad year doesn't get an $18,000 deduction against that year's wages. They get $3,000 now and $3,000 a year after that until it's used up, unless a future profitable year absorbs it faster.

The wash sale rule sits right inside this netting math. Sell a losing position and buy back a substantially identical security within 30 days on either side of the sale, and that loss gets disallowed for the current year and added to the cost basis of the replacement shares instead. Traders who repeatedly re-enter the same tickers can end up with far less usable loss than their raw trading statement suggests.

Here's a claim that shows up constantly in generic day trading tax content: that trading profits, once you're active enough to call it a business, become subject to the 15.3% self-employment tax. For the overwhelming majority of traders, that's flatly wrong, and believing it pushes people toward strategies, like forming an S-corp specifically to "avoid self-employment tax on trading gains," that solve a problem they don't actually have.

Gains from the sale of a capital asset are excluded from net earnings from self-employment under IRC Section 1402(a)(3)(A). That exclusion survives even if you qualify for Trader Tax Status and elect Section 475(f) mark-to-market accounting. Mark-to-market converts your gains from capital to ordinary income, which changes how they're taxed and removes the $3,000 loss limitation, but Congress specifically preserved the self-employment tax exclusion through that reclassification. Full-time, TTS-qualified, LLC-wrapped trading income still isn't earned income for Social Security and Medicare purposes.

There's a real tradeoff hidden in that fact worth knowing about. Since trading profits aren't self-employment income, they don't build Social Security work credits, and they don't count toward an IRA contribution limit the way a paycheck does. A profitable trading year doesn't automatically fund a retirement account the way a job's income would.

Equity options generally follow the same short-term versus long-term framework as stocks: the holding period of the option contract determines the treatment, with its own basis-adjustment rules under Publication 550 once exercised or assigned.

Futures contracts and broad-based index options work differently. Most fall under Section 1256 contracts, which get a flat 60/40 split regardless of how long you held the position, 60% automatically long-term, 40% short-term, even if the trade opened and closed in the same minute. It's often the single biggest tax advantage available to an active futures or index-options trader, and it exists precisely because these instruments are already marked to market by the exchange, making the standard holding-period test poorly suited to them in the first place.

One more layer applies once income climbs. Cross $200,000 of modified adjusted gross income as a single filer, or $250,000 married filing jointly, and the 3.8% Net Investment Income Tax applies on top of whatever capital gains rate you already owe, short-term or long-term. That threshold hasn't moved since it was created in 2013, so it quietly captures more traders every year even without a raise in income.

The short-term versus long-term split is the foundation the rest of day trading tax strategy sits on. It's the entire reason Trader Tax Status and the mark-to-market election exist: both are ways of legally changing how your trading income gets classified, and in mark-to-market's case, escaping the wash sale rule and the $3,000 loss ceiling entirely.

It's also why tracking your deductible trading expenses matters even though those expenses don't touch your capital gains rate directly. Since most day trading profit gets taxed at your full ordinary rate rather than a discounted long-term one, every dollar of legitimate deduction against that income carries real weight. New to this entire topic? The beginner's overview of day trading and taxes is a better starting point than diving straight into the elections covered here and in the complete guide to day trading taxes.