Estimating Taxable Income, Tax Liability, and Potential Refund. Charlotte Taylor 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 Office Furniture Rentals, and $6,910 of her wages were 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 for the year 2018. (Round the tax liability to the nearest dollar.)