Are seniors exempt from capital gains tax? No. Nothing in the federal tax code waives capital gains tax because of age. What does exist is a set of rules that many retirees can use to pay little or nothing on investment profits: a 0% long-term capital gains bracket for lower-income filers, a larger standard deduction starting at 65, an exclusion of up to $500,000 on the sale of a home, and a step-up in basis that wipes out gains on assets passed to heirs at death.
Why Many Retirees Pay 0% on Long-Term Gains
Profit on an asset held more than a year is taxed at long-term capital gains rates of 0%, 15%, or 20%, based on total taxable income. For 2026, the 0% rate covers taxable income up to $49,450 for single filers and $98,900 for married couples filing jointly. The 15% rate runs up to $545,500 (single) or $613,700 (joint), and 20% applies above those thresholds.1Internal Revenue Service. Rev. Proc. 2025-32
Once wages stop and income shifts to Social Security plus modest retirement account withdrawals, taxable income often drops enough to land in the 0% bracket. This is the closest thing to an age-based exemption, though it is really an income-based one that retirees are well-positioned to use. A retiree with room under the 0% ceiling can realize gains up to that ceiling each year and owe no federal tax on them.
The Extra Standard Deduction at 65
Turning 65 does change one thing directly: the standard deduction grows. For 2026, the base standard deduction is $16,100 for single filers and $32,200 for joint filers.2Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Each taxpayer 65 or older adds another $2,050 if single or head of household, or $1,650 if married filing jointly or separately. A couple where both spouses are 65 or older adds $3,300 on top of the base.3Office of the Law Revision Counsel. 26 USC 63 – Taxable Income Defined
Because the standard deduction reduces taxable income before the capital gains brackets are applied, this larger deduction gives retirees more room under the 0% ceiling. A 66-year-old single filer with $60,000 of total income subtracts $18,150 and lands at $41,850 in taxable income, well inside the 0% long-term bracket. Without the age-based add-on, that same filer would sit at $43,900. Near the top of the 0% band, that cushion can be the difference between paying nothing on gains and paying 15%.
Selling the Home: Up to $500,000 Excluded
The largest capital gains break most seniors ever claim comes from selling a primary residence. Up to $250,000 of profit is excluded for a single filer, and up to $500,000 for a married couple filing jointly. To qualify, you must have owned and used the home as your main residence for at least two of the five years before the sale. The two years of ownership and two years of use do not need to overlap; they just both need to fall within that five-year window.4Office of the Law Revision Counsel. 26 USC 121 – Exclusion of Gain From Sale of Principal Residence5Internal Revenue Service. Topic No. 701, Sale of Your Home
Sell a home for $300,000 more than you paid, qualify for the single-filer exclusion, and only $50,000 is taxable. The exclusion covers only the home you actually live in. Vacation homes and rental properties do not qualify.
If You Move Into a Care Facility
A senior who moves into an assisted living or nursing facility before hitting the two-year use requirement can still qualify. If you become physically or mentally unable to care for yourself and lived in the home for at least one year during the five-year period, time spent in a state-licensed care facility counts toward the two-year use requirement.4Office of the Law Revision Counsel. 26 USC 121 – Exclusion of Gain From Sale of Principal Residence
If Your Spouse Has Died
A surviving spouse can still claim the full $500,000 exclusion, but only if the home is sold within two years of the spouse’s death. The survivor must not have remarried before the sale and must meet the two-year ownership and use tests, counting the deceased spouse’s time.6Internal Revenue Service. Publication 523, Selling Your Home After the two-year window closes, the exclusion drops back to the $250,000 individual limit.
The Step-Up in Basis: Why Holding Often Beats Selling
When someone dies, the tax basis of their assets resets to fair market value as of the date of death.7Office of the Law Revision Counsel. 26 USC 1014 – Basis of Property Acquired From a Decedent A lifetime of appreciation is effectively wiped away for income tax purposes.
Stock bought for $10,000 that grows to $100,000 by the owner’s death passes to an heir with a new basis of $100,000. If the heir sells it later for $105,000, they owe capital gains tax on $5,000, not $95,000. For seniors holding highly appreciated assets, this is a strong reason not to sell during your lifetime just to lock in a gain.
Community Property States
Married couples in community property states get an added advantage. When one spouse dies, both halves of community property, including the survivor’s half, receive the stepped-up basis.7Office of the Law Revision Counsel. 26 USC 1014 – Basis of Property Acquired From a Decedent In common-law states, only the deceased spouse’s half steps up. Nine states use community property rules.
Gifting Assets Works Differently
The step-up applies only to assets passed at death. Give an asset away while you are alive and the recipient takes your original cost basis.8Office of the Law Revision Counsel. 26 USC 1015 – Basis of Property Acquired by Gifts and Transfers in Trust Give a child stock you bought for $10,000 when it is worth $100,000, and that child will owe capital gains tax on up to $90,000 when they sell. Held until death, the same stock would have carried no built-in gain for the heir.
What a Large Gain Can Trigger Beyond the Gains Tax
A big sale in a single year can move you into territory that costs more than the capital gains tax itself.
Social Security Benefits Become More Taxable
Whether Social Security benefits are taxed depends on “combined income,” which is adjusted gross income plus nontaxable interest plus half of your Social Security benefits. Capital gains count. For single filers, combined income between $25,000 and $34,000 makes up to 50% of benefits taxable; above $34,000, up to 85% is taxable. For joint filers, the ranges are $32,000 to $44,000 and above $44,000.9Internal Revenue Service. IRS Reminds Taxpayers Their Social Security Benefits May Be Taxable These thresholds have never been indexed to inflation. A retiree comfortably below them in a normal year can cross both by selling appreciated stock, pulling previously untaxed benefits into the taxable column.
Medicare Premiums Rise Two Years Later
Medicare sets premiums using modified adjusted gross income from two years prior. Cross the thresholds and you pay an Income-Related Monthly Adjustment Amount on top of standard Part B and Part D premiums. The 2026 standard Part B premium is $202.90 per month, with surcharges beginning at $109,000 (single) or $218,000 (joint).10Centers for Medicare & Medicaid Services. 2026 Medicare Parts A and B Premiums and Deductibles A large capital gain in 2026 shows up in 2028 premiums. Spreading a sale across two or more tax years can keep you under a tier.
The 3.8% Net Investment Income Tax
A 3.8% surtax applies to the lesser of net investment income or the amount by which modified adjusted gross income exceeds $200,000 (single) or $250,000 (joint).11Internal Revenue Service. Net Investment Income Tax Net investment income includes capital gains, dividends, interest, rental income, and royalties. These thresholds have not moved since the tax took effect in 2013.12Internal Revenue Service. Questions and Answers on the Net Investment Income Tax A single big event, such as a home sale or brokerage cash-out, can push you across even if your ordinary income sits well below the line.
Mutual Fund Distributions You Owe Tax on Without Selling
You can owe capital gains tax on a mutual fund even if you never sell a share. When the fund manager sells securities inside the fund at a profit, the fund distributes those gains to shareholders, and the distributions are taxable to you at long-term capital gains rates regardless of how long you have held the fund.13Internal Revenue Service. Reporting Capital Gains Automatic reinvestment does not defer the tax; the distribution is still income for that year, though the reinvested amount raises your cost basis for the eventual sale. Retirees holding mutual funds in taxable accounts should watch for year-end distributions and factor them into their income planning.
State Capital Gains Taxes
Federal rules are only part of the picture. Most states also tax capital gains, usually as ordinary income, with rates from 0% in states with no income tax to over 13% in the highest-tax states. Some states exempt certain retirement income or offer reduced rates for long-term gains, but the details vary. Anyone considering a move in retirement should weigh state treatment alongside the federal rules.