Individuals with low to moderate taxable income qualify for 0% long-term capital gains tax rates. For 2025, taxable income (after deductions) must be $\le$$48,350 (single) or $\le$$96,700 (married filing jointly). It applies to assets held over one year, including stocks and, often, the sale of a primary home.
Capital gains tax rates
A capital gains rate of 0% applies if your taxable income is less than or equal to: $48,350 for single and married filing separately; $96,700 for married filing jointly and qualifying surviving spouse; and. $64,750 for head of household.
For 2025, the taxable income limit for the 0% bracket is $48,350 for single filers or $96,700 for married couples filing jointly. You calculate taxable income by subtracting the greater of the standard or itemized deductions from your adjusted gross income.
The lifetime capital gains exemptions (LCGE) is a tax provision that lets small-business owners and their family members avoid paying taxes on capital gains income up to a certain amount when they sell shares in the business, a farm property, or a fishing property.
On a $100,000 capital gain, you'll likely pay 15% for long-term gains, resulting in about $15,000 in federal tax (plus potential state tax), but it could be 0% or 20% depending on your total taxable income and filing status, while short-term gains are taxed as ordinary income (potentially 22-24%).
There isn't a single "one-time" capital gains exemption, but the most common exemption allows you to exclude up to $250,000 (single) or $500,000 (married filing jointly) of profit from the sale of your primary residence, which can be used multiple times as long as you meet ownership and use tests (lived in it 2 of the last 5 years) and haven't used the exclusion in the past two years. Other options exist, like 1031 exchanges for investment properties or Charitable Remainder Trusts, but they have different rules.
Your capital gain (profit) is $200,000. Your taxable capital gain with the 50% discount applied is $100,000. Your estimated capital gains tax obligation is $37,175.
You can avoid or minimize capital gains tax by holding assets over a year for lower long-term rates, using tax-advantaged accounts (like Roth IRAs/401(k)s), donating appreciated assets to charity, using tax-loss harvesting to offset gains, or leveraging primary residence exclusions for your home, but completely avoiding tax often involves specific strategies like Qualified Opportunity Zones or 1031 exchanges for real estate.
Second, capital gains taxes on accrued capital gains are forgiven if the asset holder dies—the so-called “Angel of Death” loophole. The basis of an asset left to an heir is “stepped up” to the asset's current value.
Capital gains tax on $100k depends on how long you held the asset: short-term gains (held 1 year or less) are taxed as ordinary income (10-37%), while long-term gains (held over a year) are taxed at lower rates (0%, 15%, or 20%) based on your total taxable income and filing status, with 15% often applying in this range, plus potentially a 3.8% Net Investment Income Tax (NIIT) if your income is high.
Billionaires often employ the “buy, borrow, die” strategy to avoid income and capital gains taxes. First, they acquire appreciating assets like stocks or real estate. Instead of selling these assets when they need cash (which would trigger capital gains tax), they borrow against them at favorable interest rates.
The "6-year rule" for Capital Gains Tax (CGT) in Australia allows you to treat a former main residence as tax-exempt for up to six years after you move out, even if you rent it out, enabling you to avoid CGT on any growth during that period. You qualify by moving out, choosing to treat it as your main home for tax, and can reset the rule by moving back in. If you rent it out for longer than six years, only the portion of the gain after the six-year mark becomes taxable.
Manage your tax bracket
At the lowest income levels, the capital gains tax rate is 0%, which means no federal income taxes on your gains (state income taxes may still apply). For a married couple filing jointly, the maximum taxable income to qualify for the 0% rate is $96,700 in 2025.
Capital gains tax rates remain unchanged under the One Big Beautiful Bill Act. However, Project 2025, a policy blueprint developed by the Heritage Foundation, outlined several potential changes to capital gains taxation, including: Reducing the top long-term capital gains rate to 15%, from the current 20%
Under our scenario above, if the homeowner were single, her federal capital gain would be $400,000 - $250,000 = $150,000, and her federal capital gain tax would be $150,000 x 15% = $22,500.
On a $100,000 capital gain, you'll likely pay 15% for long-term gains, resulting in about $15,000 in federal tax (plus potential state tax), but it could be 0% or 20% depending on your total taxable income and filing status, while short-term gains are taxed as ordinary income (potentially 22-24%).
If you sell your house and don't buy another, you'll have cash proceeds (after paying off the mortgage and selling costs) and need to decide on new housing, often renting or moving in with family; financially, you might benefit from the IRS capital gains exclusion (up to $250k/$500k profit if you've lived there two of the last five years), but you'll pay tax on gains beyond that, while also managing the new costs of renting or storage.
Utilize Tax-Advantaged Accounts: Tax-advantaged retirement accounts, such as 401(k)s, Charitable Remainder Trusts, or IRAs, can help seniors reduce their capital gains taxes. Money invested in these accounts grows tax-free, and withdrawals are not taxed until they are taken out in retirement.
The 20% rule for capital gains refers to the highest federal tax rate for long-term capital gains, applying to higher income brackets when you sell investments (stocks, real estate) held for over a year, with lower rates of 0% and 15% for lower incomes, and even higher rates for special assets like collectibles. This rate kicks in for single filers earning over approximately $492,300 (2024) or $533,401 (2025), and higher for joint filers, making holding assets over a year a key tax strategy.
Yes, you can give your daughter $100,000 to buy a house, but you'll need proper documentation for her mortgage lender and you'll likely need to file a gift tax return (IRS Form 709) because the amount exceeds the annual exclusion, though it won't usually result in taxes unless you've used up your large lifetime exemption. Lenders require gift letters proving the funds aren't a loan, and you can avoid gift tax impact by gifting up to the annual limit ($19,000 per person in 2025) each year or by using your substantial lifetime exemption.
The "$100,000 loophole" for family loans refers to a tax rule where lenders avoid reporting imputed interest if the total loan amount (plus any other outstanding loans to that borrower) is $100,000 or less, and the borrower's net investment income is $1,000 or less; otherwise, the lender's taxable imputed interest is limited to the borrower's actual net investment income, avoiding the higher Applicable Federal Rates (AFR) normally required, making it a way to offer lower-interest loans with minimal tax hassle for the family.