My brokerage account gained $4393 during 2024, but I'm being taxed on: Taxable interest income, $3,548, Ordinary dividends, $2,835, Capital gains, $3,049. Why?

[VolvoGirl]

Is this a mutual fund or a single stocks in the account?  Your gain or loss in the account is separate from the interest, dividends etc. that the account paid you.  You have  an unrealized gain.  When you sell some shares you report the sales price and your cost to give you the gain or loss.