Dear Liz: We are in the lowest tax bracket. If we sell a capital gains asset worth several hundred thousand dollars, does that put us in a higher bracket and we pay 20% or do we remain in the lower bracket and pay 15%?

Answer: In the two lowest federal income tax brackets, the capital gains rate is actually zero. For a married couple filing jointly, taxable income below $18,550 in 2016 would put you in the 10% tax bracket, while income between $18,550 and $75,300 would put you in the 15% bracket. Both 10% and 15% income tax brackets pay no federal tax on long-term capital gains.

But capital gains count as income in determining your tax bracket. So a big capital gain can push you into a higher bracket, which means you would pay a higher capital gains rate.

Let’s say your normal taxable income is $75,000. You sell an asset with a $25,000 capital gain. Now you’re in the 25% tax bracket with taxable income between $75,300 and $151,900, which means your long-term capital gains rate will be 15%.

A really big gain would put you in the top 39.6% bracket, which applies to taxable income above $466,950. In that bracket, your capital gains rate would be 20%. Also, an additional 3.8% surtax applies for taxpayers with adjusted gross incomes over $250,000 for married couples and $200,000 for singles. The surtax is applied to the lesser of the taxpayer’s net investment income or the amounts over those limits.

There may be ways to alleviate or spread out the tax hit. You could sell losing investments to offset some or all of the gain. Another option for some assets is to sell a portion at a time over several years, or use an installment sale. A tax pro can walk you through your options.