Exercise 4-21 (LO.2) Bigham Corporation, an accrual basis calendar year taxpayer, sells its services under 12- and 24-month contracts. The corporation provides services to each customer every month. On July 1, 2021, Bigham sold the following customer contracts: Length of contract 12 months 24 months Total Proceeds $14,000 $24,000 Determine the income to be recognized in taxable income in 2021 and 2022. Length of Contract 2021 Income 2022 Income 12 months 24 months