Estimating taxable income, tax liablity, and potential refund. Kara hooks is 24 years old and single, lives in an apartment, and has no dependents. Last year she earned $55,000 as a sales assistant for Business Solutions: $3,910 of her wages was withheld for federal income taxes. In addition, she had interest income of $142. She takes the standard deduction. Calculate her taxable income, tax liability, and tax refund or tax owed.