During 2015, XYZ corporation's federal taxable income was $242,000. XYZ wants to preserve cash and avoid an underpayment of tax penalty. Using the corporate rate schedule, compute the required estimated tax payments for 2016 tax in each of the following circumstances.
a. XYZ corporation's 2016 federal taxable income is $593,000.
b. XYZ Corporation's 2016 federal taxable income is $952,000.
c. XYZ corporation's 2016 federal taxable income is $1,274,000.