Capital Gains Tax: Short-Term vs. Long-Term Rates Explained

One Year Makes a $10,000 Difference

You bought $50,000 of stock. It grew to $80,000 — a $30,000 gain. If you sell it 11 months after purchase, you pay short-term capital gains tax, which is taxed at ordinary income tax rates. For a taxpayer in the 32% federal bracket, the tax on that $30,000 gain is $9,600. Wait one more month — hold the position for 366 days instead of 365 — and the gain qualifies as long-term. The long-term capital gains rate for the same taxpayer is 15%. Tax owed: $4,500. The decision to hold one additional month saved $5,100. This single distinction — the holding period threshold — is one of the highest-leverage tax decisions available to investors, and it is entirely within your control.

The Holding Period: Exactly How It Works

The IRS defines the holding period as beginning the day after the purchase date and ending on the date of sale, inclusive. An investment held for more than 12 months qualifies for long-term treatment. Exactly 12 months (365 days) does not qualify — you need 366 days (or more) for a non-leap year holding period. The distinction is commonly misunderstood: "one year" in tax terminology means more than 12 months, not exactly 12 months.

Holding period rules have nuances beyond simple buy-to-sell tracking:

• Inherited assets receive a stepped-up basis and are automatically considered long-term regardless of actual holding period
• Gifted assets retain the donor's original holding period and cost basis (for gain purposes)
• Wash sale rule: If you sell at a loss and repurchase the same or substantially identical security within 30 days before or after, the loss is disallowed. The disallowed loss is added to the cost basis of the repurchased shares

The Rate Schedules: 2024 Federal Rates

Short-term capital gains, by contrast, are taxed at the same rates as ordinary income: 10%, 12%, 22%, 24%, 32%, 35%, or 37% depending on your bracket. The 0% long-term rate is particularly noteworthy: a married couple with taxable income under $94,050 can realize up to $94,050 worth of long-term capital gains and pay zero federal capital gains tax. This creates a strategy — sometimes called capital gains harvesting — where lower-income years are used to realize gains tax-free.

The Net Investment Income Tax: An Additional Layer

High-income taxpayers face an additional 3.8% Net Investment Income Tax (NIIT) on the lesser of net investment income or the amount by which modified AGI exceeds $200,000 (single) or $250,000 (married filing jointly). Investment income subject to NIIT includes capital gains, dividends, interest, rental income, and passive business income. At the top, a high-income investor selling appreciated stock pays 20% long-term capital gains rate plus 3.8% NIIT — an effective federal rate of 23.8% on long-term gains. State capital gains taxes add to this in most states.

Cryptocurrency and Capital Gains

The IRS treats cryptocurrency as property, not currency. Every crypto transaction — sale, exchange for another coin, use to purchase goods or services — is a taxable event subject to capital gains rules. Holding Bitcoin for more than a year before selling qualifies for long-term rates. Selling after 11 months triggers short-term rates. Exchanging one cryptocurrency for another (e.g., Bitcoin for Ethereum) is a taxable event at the exchange rate at the time of the transaction. The IRS has specifically required tax forms to include a disclosure about cryptocurrency transactions since 2019, and is receiving increasing 1099-DA reporting from exchanges beginning in 2025.

Tax Loss Harvesting: Using Losses Strategically

When investments decline in value, the loss can be realized and used to offset capital gains elsewhere in your portfolio — a technique called tax loss harvesting. Rules:

• Capital losses first offset capital gains of the same type (short-term losses offset short-term gains; long-term losses offset long-term gains)
• Net short-term losses can offset net long-term gains; net long-term losses can offset net short-term gains
• If total capital losses exceed total capital gains, up to $3,000 of the excess can be deducted against ordinary income per year
• Unused capital losses carry forward indefinitely to future tax years

The wash sale rule applies: realizing a loss and immediately buying the same fund or stock to maintain market exposure nullifies the loss. Investors often work around this by selling one S&P 500 ETF and buying a different one tracking a similar but not identical index — capturing the tax loss without exiting the market.

This article is for informational purposes only and does not constitute financial advice.