Your "living expenses" have nothing to do with taxes - which are based on INCOME. How is anyone here supposed to estimate your taxes if you fail to provide your income?

My broker told me that it amounts to roughly 15% of your total profitability.

I found out that you only pay taxes on dividends, and the stocks that you sell. I also found out that you only pay taxes on the profit that was made when you sell the stock. I'm planning on semi retiring for a while, and living off the money I've got saved up in stocks, and if I live cheap my living expenses will only be about $12,000 a year. What kind of money can I expect to have to pay in taxes?