In: Advanced Math
Isabella is filing as the head of a household. Her taxable income is $68,014. Use the Tax Table, Exhibit 18-3 from your text, to find the tax liability.
The tax liability calculated above is just an extrapolation of the taxes upto $66000 given as per tax table uploaded. However, $68,014 is greater than $66000 and hence higher tax liability will be there. So, based on this concept the actual tax liability of Isabella filing as the head of household may range from $12,800 to $12,900.