Tax is halved (thus 50%), so on $10,000 profit, you are taxed at $5,000.
Roughly speaking, and without getting into bracket creep and other tax terminology, you are taxed $2,500 on your overall $10,000 profit, right? 50% of the $5,000.
SYT Price at posting:
3.9¢ Sentiment: Hold Disclosure: Held