You’re sitting on $180,000 in unrealized stock gains. Your taxable income before the sale will land around $580,000 this year. You need to know: does this sale push you into the 20% capital gains bracket, or do you stay at 15%? The difference is $9,000.

Or maybe you’re retired, living off Social Security and taxable brokerage withdrawals. Your taxable income hovers around $45,000. You want to sell $30,000 in appreciated stock to cover a new roof. Will you pay 0% on those gains, or did the 2026 bracket shift mean you now owe 15%? That’s the difference between keeping $30,000 and keeping $25,500.

Every November, the IRS publishes inflation adjustments for the next tax year. The 2026 brackets came out in Revenue Procedure 2025-32. For anyone selling stock, real estate, a business, or crypto in 2026, the thresholds that determine whether you pay 0%, 15%, or 20% on long-term gains have moved. If you were close to a bracket edge in 2025, you might have crossed it—or you might have more room now.

Here’s what changed and what it means if you’re planning a sale this year.

The Three Brackets and What Moved for 2026

Long-term capital gains are taxed at 0%, 15%, or 20% based on your total taxable income including the gain. These thresholds get indexed annually for inflation using chained CPI-U. The 2026 numbers reflect about 2-3% inflation from the prior year.

Here’s the side-by-side:

Single

  • 0% bracket: $0 to $49,450 in 2026, up from $48,350 in 2025

  • 15% bracket: $49,451 to $545,500 in 2026, up from $48,351 to $533,400 in 2025

  • 20% bracket: Over $545,500 in 2026, up from over $533,400 in 2025

Married Filing Jointly

  • 0% bracket: $0 to $98,900 in 2026, up from $96,700 in 2025

  • 15% bracket: $98,901 to $613,700 in 2026, up from $96,701 to $600,050 in 2025

  • 20% bracket: Over $613,700 in 2026, up from over $600,050 in 2025

Head of Household

  • 0% bracket: $0 to $66,200 in 2026, up from $64,750 in 2025

  • 15% bracket: $66,201 to $579,600 in 2026, up from $64,751 to $566,700 in 2025

  • 20% bracket: Over $579,600 in 2026, up from over $566,700 in 2025

Married Filing Separately

  • 0% bracket: $0 to $49,450 in 2026, up from $48,350 in 2025

  • 15% bracket: $49,451 to $306,850 in 2026, up from $48,351 to $300,000 in 2025

  • 20% bracket: Over $306,850 in 2026, up from over $300,000 in 2025

The shift is proportional across filing statuses. Married filing jointly thresholds are roughly double single filer thresholds. The standard deduction also increased for 2026. It is $16,100 for single filers and $32,200 for married filing jointly. That gives you a little more room before hitting the taxable income thresholds.

If you were within $10,000 to $20,000 of a bracket line in 2025, the 2026 shift might matter. If you’re solidly in the middle of a bracket, your planning probably doesn’t change.

How to Know Which Bracket You Land In

Capital gains brackets are based on taxable income, not gross income or adjusted gross income. That’s a critical distinction.

Here’s the sequence. Start with your adjusted gross income. Subtract your standard or itemized deduction. That gives you taxable income before the gain. Add the capital gain. Compare the total to the threshold for your filing status.

The gain itself can push you from one bracket to another. It’s not all taxed at your starting rate. Gains stack on top of your other income.

Hypothetical example:

You’re single with $40,000 in taxable income before any sale. You sell stock with a $90,000 long-term gain. Your total taxable income is now $130,000. The first $9,450 of the gain (up to the $49,450 threshold) is taxed at 0%. The remaining $80,550 is taxed at 15%. You pay $12,082.50 on the gain, not $13,500 (15% of the full $90,000) and not zero.

This stacking matters most when you’re near a bracket line. A large gain can push part of itself into the next bracket, even if your pre-gain income was comfortably in a lower one.

If you’re planning a sale, model the full return before you execute. Don’t guess based on last year’s income or assume the whole gain gets the same rate.

The Net Investment Income Tax Stacks on Top

The 3.8% Net Investment Income Tax kicks in at different thresholds than the capital gains brackets. This is a surtax from the Affordable Care Act that applies to the lesser of your net investment income or the amount by which your modified adjusted gross income exceeds:

  • $200,000 for single filers

  • $250,000 for married filing jointly

  • $125,000 for married filing separately

  • $200,000 for head of household

These thresholds are not indexed for inflation. They’ve been frozen since 2013. That means more taxpayers hit the NIIT every year as incomes and asset values rise.

The NIIT stacks on top of the capital gains rate. If you’re in the 15% bracket and the NIIT applies, your effective rate is 18.8%. If you’re in the 20% bracket, it’s 23.8%.

Hypothetical example:

You’re married filing jointly with $260,000 in modified AGI. You realize a $100,000 long-term capital gain. Your MAGI is now $360,000, which exceeds the $250,000 threshold by $110,000. The NIIT applies to the lesser of your net investment income ($100,000) or the excess ($110,000). You owe 3.8% on $100,000, which is $3,800. If the gain is taxed at 20%, your total federal tax on the gain is $23,800 (20% + 3.8%).

The IRS tracks this on Form 8960. If you’re a high earner planning a large sale, the NIIT is not optional and it’s not small. On a $500,000 gain, it’s $19,000.

What the 2026 Shift Means If You’re Close to a Line

If your pre-gain taxable income is within $10,000 to $20,000 of a threshold, the 2026 upward shift gives you more room.

For married filing jointly filers, the 0% bracket now extends to $98,900, up from $96,700. That’s $2,200 more in gains you can realize at 0% if your other income is low enough. Combined with the higher standard deduction ($32,200 in 2026 vs. $30,900 in 2025), retirees managing taxable account withdrawals have a bit more space to harvest gains tax-free.

At the 15%/20% line, married filing jointly filers now have $13,650 more room before hitting 20%. If your taxable income including the gain lands between $600,050 and $613,700, you stay at 15% in 2026 but would have crossed into 20% in 2025. On a $200,000 gain, that’s a $10,000 difference.

If you’re solidly mid-bracket—say, $300,000 in taxable income with a $50,000 gain—the shift doesn’t change your outcome. You’re still in the 15% bracket in both years.

The planning question is whether you’re near enough to a line that timing the sale, bunching deductions, or coordinating with Roth conversions could move you from one bracket to another. That requires knowing your full tax picture, not just the gain.

Common Pitfalls When Planning Around These Brackets

Using gross income instead of taxable income. Your AGI or gross income is not what determines your bracket. You subtract deductions first. A married couple with $100,000 in AGI and a $32,200 standard deduction has $67,800 in taxable income. A $30,000 gain brings them to $97,800, still under the $98,900 threshold for the 0% bracket. If they mistakenly used AGI, they’d think they owe 15% and leave money on the table.

Assuming the whole gain is taxed at your starting rate. Gains stack. If you start in the 0% bracket and the gain pushes you into 15%, part of the gain is taxed at 0% and part at 15%. The IRS calculates this automatically, but if you’re planning a sale, you need to model it yourself to know the real cost.

Forgetting the NIIT. High earners often overlook the 3.8% surtax because it’s on a separate form and has different thresholds. If your modified AGI exceeds $200,000 (single) or $250,000 (married filing jointly) and you have investment income, the NIIT applies. It stacks on top of the capital gains rate. On a $100,000 gain, that’s $3,800. The IRS audits this via Form 8960, and it’s one of the more common high-income filing mistakes.

Mixing up 2025 and 2026 thresholds. If you’re planning a 2026 sale but using 2025 brackets, you might think you’re in a higher bracket than you actually are. The difference is small. It ranges from $1,100 to $13,650 depending on filing status. But if you are close to a bracket line, it still matters. Always use the tax year when the sale happens.

Not accounting for state capital gains taxes. The federal brackets are only part of the cost. Thirteen states tax capital gains as ordinary income, with top rates ranging from 3% to 13.3% in California. If you’re planning a large sale, the state bite can be larger than the federal bracket shift.

Ignoring the standard deduction increase. The 2026 standard deduction is higher than 2025. That lowers your taxable income before the gain, which can keep you in a lower bracket. Single filers get an extra $750, and married filing jointly filers get an extra $1,300. If you’re close to the 0%/15% line, this can be the difference between paying nothing and paying $4,500 on a $30,000 gain.

Bottom Line

The 2026 capital gains brackets give some investors a little more room, but the real question is not where the headline thresholds moved. It is where your full taxable income lands after the gain is added in.

If you are planning a sale in 2026, run the numbers using your full taxable income, not just your AGI. If you are close to a bracket line, even a modest shift from 2025 could change how much of the gain stays in 0% or 15% and how much spills into 20%.

It is also important to check whether the Net Investment Income Tax applies. That 3.8% surtax can sit on top of the capital gains rate and meaningfully raise the real tax cost of the sale.

For retirees and other investors managing withdrawals from taxable accounts, the higher 2026 standard deduction may create a little more room in the 0% capital gains bracket. For higher income households planning a larger sale, the stakes are different. A move from 15% to 20%, plus NIIT, can add up fast.

The main takeaway is simple: do not assume you know your rate from the headline bracket alone. Capital gains planning works best when you model the full return before you sell.

Have a capital gains question or a sale you’re planning this year? Drop it in the comments.

Disclaimer: This is educational content from Silly Money, not tax, legal, or investment advice. Taxes are complicated and your situation is unique. Talk to a qualified professional before making decisions based on anything you read here.