What is the name of your state?california i have never actually had to pay capital gains tax up to now. my understanding is the following. if i have a long-term gain of 100,000, and the capital tax rate is 10%, then $10,000 is added to my ordinary income for the year. and i then simply compute my income tax the same way, with that $10,000 as a source of income, just like any other source of income. is this correct ?