Question - For the current tax year, a self-employed truck driver has gross earnings of $43,000 from his business. His business related expenses total is $5,620. During the current tax year, he received $2,500 in interest income and dividends of $500. He also sold investment property and recognized a $1,500 gain. What is the amount of his self-employment tax (Social Security and Medicare taxes) liability for the current tax year?