Capital Gains Tax When in a High Tax Bracket

It depends on your income. The capital gains rates for long-term gains are 0%,, 15%, and 20%, depending on income. From the IRS:

Capital Gain Tax Rates

The tax rate on most net capital gain is no higher than 15% for most individuals. Some or all net capital gain may be taxed at 0% if your taxable income is less than $80,000.

A capital gain rate of 15% applies if your taxable income is $80,000 or more but less than $441,450 for single; $496,600 for married filing jointly or qualifying widow(er); $469,050 for head of household, or $248,300 for married filing separately.

However, a net capital gain tax rate of 20% applies to the extent that your taxable income exceeds the thresholds set for the 15% capital gain rate.

There are a few other exceptions where capital gains may be taxed at rates greater than 20%:

The taxable part of a gain from selling section 1202 qualified small business stock is taxed at a maximum 28% rate. Net capital gains from selling collectibles (such as coins or art) are taxed at a maximum 28% rate. The portion of any unrecaptured section 1250 gain from selling section 1250 real property is taxed at a maximum 25% rate. Note: Net short-term capital gains are subject to taxation as ordinary income at graduated tax rates.