I don't.
And you haven't paid taxes on the re-invested dividends, or on mutual funds, or on individual stocks appreciation in a taxable account, unless you're re-trading the whole thing every year.
I pay taxes on the dividends in the year they're paid. I pay taxes on the capital gains in the year they're realized.
And you haven't paid tax on the equity in your house yet. But you will when you sell it.
Only if the gain is more than $500,000. Under the sales tax, I'd pay 30% on not only the gain, but also on the purchase price. Sounds great! Not.
You only pay those in a taxable account, and only when you re-trade them. I'll repeat my question.... why are you trading in a taxable account instead of an IRA or 401?
You'd only pay that on a new house which wouldn't have a gain, only a profit.