My taxable income is 28,350. How is my blended tax rate 35.3%??

I have not added my 1095A ($3600 in healthcare) nor my 1099T ($9,000 in realized gains). I have not paid estimates throughout the year and was hoping Turbo Tax would provide a solid estimate to submit before Jan 15th. Turbo Tax is suggesting I owe 10,000 in federal taxes...