Learn what makes a capital gain short term, how holding period and netting work, where it is reported, and how California taxes the gain.
A short-term capital gain generally occurs when a taxpayer sells or exchanges a capital asset held for one year or less for more than its adjusted basis. For individuals, net short-term capital gain is generally taxed at ordinary federal income-tax rates rather than the preferential rates that may apply to net long-term capital gain.
"Short term" describes holding-period character. It does not mean the investment produced cash quickly, that the gain is small, or that tax is calculated separately for each profitable sale. Gains and losses must be classified and netted under Schedule D rules.
The basic calculation is:
Amount realized − adjusted basis = gain or loss
Adjusted basis may include purchase cost and transaction costs and may be changed by return of capital, wash-sale adjustments, stock splits, reinvested distributions, improvements, depreciation, or other events. Form 1099-B gross proceeds are not taxable gain by themselves.
Suppose an investor buys shares for $30,000 on March 8 and sells them for net proceeds of $38,000 on December 20 of the same year. The $8,000 gain is short term because the shares were held one year or less. If the broker reports incorrect or missing basis, the taxpayer must reconcile the transaction rather than paying tax on the full $38,000.
For most purchased assets, begin counting on the day after acquisition and include the day of disposition. Property sold on the first anniversary of purchase is generally held one year or less; selling the following day generally crosses into more-than-one-year treatment.
Special rules apply to inherited property, gifts, wash-sale replacement shares, options, short sales, partnership interests, certain commodity transactions, and other assets. Inherited property is generally treated as held more than one year regardless of actual holding time. A gift may carry over the donor's holding period when basis carries over.
Trade date, rather than settlement date, generally controls stock purchases and sales. Digital-asset records require timestamps, units, wallet transfers, and lot identification. "Various" on a broker statement does not eliminate the need to separate short- and long-term lots.
First net short-term gains against short-term losses, including a short-term capital loss carryover. Separately net long-term gains and losses. If one category is a gain and the other is a loss, net the two results against each other.
Example: a taxpayer has a $12,000 short-term gain and a $5,000 short-term loss, producing a $7,000 net short-term gain. She also has a $2,000 net long-term loss. After cross-netting, she has a $5,000 net short-term capital gain. The result is generally taxed at ordinary federal rates.
This process matters because a long-term loss can offset a short-term gain, and vice versa. Tax planning should consider the entire portfolio and existing carryovers rather than viewing a single sale in isolation.
Most investment sales are reconciled on Form 8949 and summarized in Part I of Schedule D. Certain transactions with basis reported to the IRS and no adjustments may be summarized directly on Schedule D. Schedule K-1, Form 1099-B, Form 1099-DA, mutual-fund statements, and prior-year carryover worksheets can also feed the calculation.
Not every gain from an asset held one year or less is a capital gain. Inventory, depreciable business property, dealer property, and certain contract or recapture items can produce ordinary treatment. The asset's tax classification must be determined before applying the capital-gain rules.
Net short-term capital gain generally joins ordinary taxable income and is taxed through the regular rate schedule. It can also increase modified adjusted gross income for provisions such as the 3.8% net investment income tax, premium tax credit, and other income-sensitive rules.
Estimated-tax planning may be needed because brokers generally do not withhold federal income tax from ordinary investment sales. Tax is based on the full-year return, not a fixed percentage collected when the asset is sold.
California does not provide a preferential rate for either short- or long-term capital gains. Capital gains are taxed as ordinary income under California rates. Nevertheless, taxpayers must preserve holding-period character because California Schedule D computations, loss carryovers, and federal reconciliation still use short- and long-term categories.
California basis may differ from federal basis due to depreciation, deferrals, or nonconformity. Schedule D (540) generally is required when California gains or losses differ from federal amounts. California residents generally report gains from all sources; nonresidents require source analysis, especially for California real property or business interests.
Heath Income Tax can help reconcile basis, holding periods, investment forms, and federal and California capital-gain reporting.
Is a short-term capital gain taxed at a flat federal rate?
Generally no. Net short-term capital gain is usually taxed at the taxpayer's ordinary federal rates.
Can a capital loss offset short-term capital gain?
Yes. Short-term losses net against short-term gains first, followed by cross-netting with the long-term category.
Is a sale after exactly 12 months long term?
Not necessarily. Long-term treatment generally requires holding the asset for more than one year; exact acquisition and sale dates matter.
The definitions and examples on this page are for informational purposes only and do not constitute tax advice. Tax laws change frequently and individual circumstances vary. Consult a qualified tax professional before making decisions based on this content.
Click a question or ask us your own.
Ask Us a Question
Message Sent!
Thank you — we'll get back to you as soon as possible.