Question: Williamson Plumbing, Inc. is a cash method taxpayer that uses the calendar year as its tax year. On December 28, 2016, it accepted a $200 payment by credit card for plumbing services it had performed. The payment was credited to Williamson on January 5, 2017. On December 15, 2016, Williamson also received free accounting services (worth $1,000) in exchange for plumbing work it did for an accountant on November 20, 2016. How much of these amounts does it have to include in its gross income for 2016?
Same facts, except that Williamson plumbing as an accrual method taxpayer that uses the calendar year as its tax year. How much does it have to include in its gross income for 2016?