Investor Tax Guide · Updated May 2026

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

Sell a stock after 364 days and the IRS taxes your profit as ordinary income — the same as your salary. Wait one more day and a preferential rate kicks in that could cut your tax bill nearly in half. One day. The difference can be thousands of dollars, and it's entirely within your control.

11 min read·⚠️ Estimates only — not tax advice

In This Guide

The Fundamental Split: Holding Period Determines Everything
Short-Term Gains: Taxed Like a Paycheck
Long-Term Capital Gains Rates for 2025
The Net Investment Income Tax Nobody Mentions
How Long-Term Gains Stack on Top of Ordinary Income
Special Cases: Real Estate, Crypto, Collectibles
Capital Gains Tax Calculator
Capital Losses and Tax-Loss Harvesting
Practical Planning: Reduce Your Bill
Frequently Asked Questions

The Fundamental Split: Holding Period Determines Everything

The IRS draws a hard line at one year. How long you held an asset before selling determines which tax treatment applies. The holding period begins the day after you acquire the asset and ends on the day you sell it.

≤ 1 year

Short-Term Capital Gain

Taxed as ordinary income — flows into your regular income tax brackets alongside wages. Rates: 10%, 12%, 22%, 24%, 32%, 35%, or 37%.

1 Year

> 1 year

Long-Term Capital Gain

Taxed at preferential long-term rates: 0%, 15%, or 20%, depending on your taxable income. Almost always a lower rate than ordinary income.

Short-Term Capital Gains: Taxed Like a Paycheck

Short-term gains don't get their own rate — they're added to your other taxable income and taxed at whatever ordinary bracket that total reaches. One extra day of holding can make a large difference:

⚡ Sold after 8 months

Elena — Short-Term Treatment

Gain on stock sale$18,000

Rate (ordinary income, ~22–24%)~23%

Tax on gain~$4,200

✓ Waited 4 more months

Elena — Long-Term Treatment

Gain on stock sale$18,000

Rate (long-term, at her income)15%

Tax on gain~$2,700

Waiting 4 months saved Elena ~$1,500 on a single trade. That scales proportionally with the size of the gain.

Long-Term Capital Gains Rates for 2025

Three possible federal rates, determined by your taxable income — not your marginal bracket:

Filing Status	0% Rate	15% Rate	20% Rate
Single	Up to $48,350	$48,351 – $533,400	Over $533,400
Married Filing Jointly	Up to $96,700	$96,701 – $600,050	Over $600,050
Head of Household	Up to $64,750	$64,751 – $566,700	Over $566,700
MFS	Up to $48,350	$48,351 – $300,000	Over $300,000

The 0% rate is real — and underused. A married couple with $80,000 in taxable income can sell appreciated stock and pay zero federal tax on those gains. Not a typo. A planning opportunity that gets overlooked every year by people who assume capital gains are always taxed.

The Net Investment Income Tax: The Rate Nobody Mentions

High earners face an additional 3.8% Net Investment Income Tax (NIIT) that doesn't appear in the standard rate tables. It applies to the lesser of your net investment income or the amount by which your MAGI exceeds the threshold:

Single filers: $200,000
Married filing jointly: $250,000
These thresholds are not adjusted for inflation — fixed since 2013

For a high-income investor subject to both the 20% long-term rate and the 3.8% NIIT, the effective federal rate on long-term gains is 23.8% — not 20%. Short-term gains above the NIIT thresholds also owe the extra 3.8%, stacking on top of ordinary rates already at 35% or 37%.

How Long-Term Gains Stack on Top of Ordinary Income

Long-term gains don't replace your ordinary income in the bracket calculation — they stack on top of it. Your wages fill the income brackets from the bottom up, and your long-term gains sit on top to determine which long-term rate applies.

David & Carmen · MFJ · $160K wages + $90K long-term gain

W-2 Wages

$130,800 taxable ordinary income → ordinary brackets

22% max

LT Capital Gain

$90K stacks on top → 15% LT rate (not 0%)

15%

Their $90K gain isn't taxed at 0% — because when stacked on $130,800 of ordinary income, it exceeds the $96,700 MFJ threshold. Understanding stacking is critical for engineering a 0% capital gains year.

Special Cases: Real Estate, Crypto, and Collectibles

🏠

Real Estate

25% depreciation recapture

Standard 0%/15%/20% for gains above recapture. Depreciation taken on rental property is recaptured at max 25%. Primary residence: $250K/$500K exclusion if lived there 2 of last 5 years.

₿

Cryptocurrency

Same ST/LT rules apply

IRS treats crypto as property. Every sale, trade, or use to purchase goods is a taxable event. Crypto-to-crypto swaps (BTC → ETH) also trigger gain/loss — a point that surprises many investors.

🎨

Collectibles

28% max long-term rate

Art, antiques, coins, precious metals, fine wine — long-term gains capped at 28%, not 20%. Short-term collectible gains are taxed as ordinary income, same as other assets.

📈

Capital Gains Tax Calculator

Capital Losses: How They Offset Gains

Losses from selling assets below your cost basis offset gains in a specific IRS order:

Short-term losses offset short-term gains first
Long-term losses offset long-term gains first
Net losses from one category can then offset net gains from the other
If total losses exceed total gains, up to $3,000 of net capital loss can offset ordinary income per year
Losses beyond $3,000 carry forward indefinitely to future tax years

Tax-loss harvesting — strategically selling underperforming positions to generate losses offsetting gains — is one of the most commonly used year-end planning moves among active investors. The key constraint: the wash-sale rule prohibits repurchasing the same or substantially identical security within 30 days before or after the sale.

Crypto wash-sale gap: Wash-sale rules do not currently apply to cryptocurrency — a gap in the tax code that many investors use to harvest crypto losses while immediately repurchasing the same coins. Legislation to close this gap has been discussed but as of 2025 has not been enacted.

Practical Planning: How to Reduce Your Capital Gains Tax Bill

Hold past the one-year mark whenever possible. The rate differential is significant. Unless you have a compelling reason to sell early, patience has measurable tax value.
Harvest losses before year-end. Review your portfolio in November and December. Positions at a loss can offset gains you've already realised during the year.
Consider your income level in the sale year. If you're in a lower-income year — took time off, had a business loss, recently retired — you may qualify for the 0% long-term rate on gains that would otherwise be taxed at 15%.
Maximise tax-advantaged accounts. Gains inside a 401(k), IRA, Roth IRA, or HSA are not subject to capital gains tax in the year they occur. Asset location — placing high-growth assets inside these accounts — reduces lifetime exposure.
Know your cost basis. For inherited assets, basis steps up to the fair market value at the date of the original owner's death — meaning inherited appreciated stock may have zero taxable gain when you sell.

Frequently Asked Questions

Count from the day after your purchase date to the day of your sale. 365 days or less = short-term. 366 days or more = long-term. Your brokerage's 1099-B will categorize each transaction, but verify holding period on trades near the one-year boundary.

Yes. The taxable event occurs at the moment of sale, regardless of what you do with the proceeds. Reinvesting doesn't defer or eliminate the gain. The major exception is a 1031 exchange for real estate, which allows deferral when proceeds are reinvested in like-kind property under specific IRS rules.

Long-term capital gains don't push your ordinary income into higher brackets — they're taxed separately at preferential rates. However, they increase your total income, which can affect eligibility for deductions and credits that phase out at higher income levels, and can trigger the NIIT above certain thresholds.

Inherited assets receive a stepped-up cost basis — the fair market value at the date of the original owner's death. If you sell shortly after inheriting, your gain is typically minimal. Any gain is treated as long-term regardless of how long you personally held the asset.

Most states tax capital gains as ordinary income — they don't offer the preferential federal rates. Some states have no income tax. California taxes all capital gains at full ordinary income rates with no distinction between short-term and long-term. State tax can meaningfully increase your total bill.

The Rate You Pay Is Set Before You Sell — Not After.

Enter your gain, holding period, income, and filing status above — see your exact federal tax before you make the trade.

Calculate My Capital Gains Tax →

⚠️ For informational purposes only — not tax advice.