For 2024, long-term capital gains offer a rare tax loophole for married couples filing jointly. If taxable income stays below $96,700, those gains are taxed at 0%. With the standard deduction of $30,000, that effectively means a couple can make up to $126,700 in total income and still owe nothing on long-term capital gains—assuming no other income sources.
Understanding how this works can unlock major savings. When selling assets, only the gains are taxable, not the full sale amount. If the original purchase price (cost basis) is just 10-20% of the sale price, you could potentially cash out $150,000 while staying in the 0% bracket. That’s a powerful opportunity to sell investments tax-free.
- Example: If you sell $150,000 worth of stock and the cost basis is 20% ($30,000), the capital gain is $120,000. Since this amount falls within the 0% tax threshold, no federal tax is owed.
But watch out for Roth conversions. Shifting pre-tax retirement funds into a Roth IRA triggers taxable income, which could push you out of the 0% capital gains bracket. If your taxable income exceeds $96,700, long-term capital gains start getting taxed at 15%. A poorly timed Roth conversion could mean the difference between paying nothing and getting hit with a hefty tax bill.
This is where planning becomes crucial. Harvesting capital gains first—before converting to a Roth—can preserve the tax-free advantage. Another strategy is spreading out the conversion over several years to keep taxable income under the limit.
The tax code rewards those who understand its nuances. For those with long-term gains and an eye on Roth conversions, timing is everything. Done right, this can mean tens of thousands in tax savings.