Capital Gains Tax 2026: Short vs Long-Term Strategy

Capital gains tax is one of the few major US tax decisions you actually control — almost entirely through timing. The difference between holding for 364 days versus 366 can be 17 percentage points of tax. Knowing the rules turns that into real money.

Short-term vs long-term: the holding period rule

The IRS classifies capital gains by how long you held the asset before selling:

• Short-term: held one year or less. Taxed at your ordinary income rate (10–37%).
• Long-term: held more than one year. Taxed at preferential rates (0%, 15%, or 20%).

The clock starts the day after you acquire the asset and ends the day you sell it. To get long-term treatment, you must hold strictly more than 365 days — not exactly one year.

2026 long-term capital gains brackets

Long-term rates are based on total taxable income (which includes the gain itself):

• 0%: single up to ~$48,350; married filing jointly up to ~$96,700.
• 15%: single ~$48,350–$533,400; MFJ ~$96,700–$600,050.
• 20%: single above ~$533,400; MFJ above ~$600,050.

Add a 3.8% Net Investment Income Tax (NIIT) for high earners — single $200K+ MAGI, MFJ $250K+. So the actual top federal rate on long-term gains is 23.8%, not 20%.

Short-term gains: just ordinary income

Short-term gains stack on top of your salary as ordinary income. At a $200K salary in the 24% federal bracket, $20K of short-term gains adds $4,800 in federal tax. The same gain held one extra day to qualify long-term would owe $3,000 (15%). Free $1,800 for the patience.

The state tax overlay

Most states tax capital gains as ordinary income — there is no preferential long-term rate. So in California, long-term gains get federal 15% + state up to 13.3% = effective 28.3% (before NIIT). In Texas, Florida, Washington, and other no-income-tax states, long-term gains stop at the federal rate.

• No state tax on capital gains: AK, FL, NV, SD, TN, TX, WA (some), WY.
• Special low rates: Hawaii caps at 7.25%; some others have partial exclusions.
• Highest combined burden: CA, NY, NJ, OR — combined federal+state can exceed 35%.

Strategies that move the needle

1. Tax-loss harvesting

Realize losses to offset gains. Capital losses first cancel gains of the same character (short or long), then apply against the other. Excess losses up to $3,000/year reduce ordinary income; the rest carries forward indefinitely.

Watch the wash-sale rule: you can't buy back the same security (or "substantially identical") within 30 days before or after the loss sale. Easy workaround: swap into a similar-but-different fund (S&P 500 → total US market, for example).

2. Specific lot identification

When you sell partial holdings, brokerages default to FIFO (first-in-first-out). For appreciated positions bought at multiple price points, FIFO maximizes your gain. Switch your account's default to "specific lot" and pick which shares to sell — usually the highest-cost ones to minimize the gain.

3. Tax-gain harvesting in low-income years

The mirror image of loss harvesting. In years when you're below the 0% LTCG threshold, deliberately sell appreciated long-term positions to realize the gain at zero tax — then rebuy immediately (no wash-sale rule on gains). Resets your cost basis higher for free.

4. Hold appreciated assets until death

Inherited assets get a "step-up in basis" — heirs receive them at fair market value at date of death, wiping out all unrealized gains forever. This is why ultra-wealthy families often borrow against appreciated stock rather than sell during their lifetime.

5. Donate appreciated stock instead of cash

Donating appreciated long-term stock to charity lets you deduct fair market value while avoiding the capital gains tax entirely. For a $10,000 stock with $7,000 of gain, you save the gain tax (~$1,500) and get the full $10,000 deduction.

Special asset categories

• Collectibles (art, gold coins, rare wine): long-term gains taxed at a flat 28%, not 15/20%. Holding gold ETFs that own physical bullion (GLD, IAU) triggers this rate.
• Section 1250 real estate gain (depreciation recapture): taxed up to 25% even at long-term.
• Qualified small business stock (Section 1202): can be 100% excluded from federal tax if held 5+ years and other requirements met.
• Crypto: taxed identically to stock for capital gains purposes; same short/long-term rules.

The home-sale exclusion

Selling your primary residence: $250K of gain excluded for single, $500K for married filing jointly, if you owned and lived in the home 2 of the last 5 years. Above the exclusion, normal long-term rates apply (assuming you owned more than a year).