Final answer:
For unearned income from services, a cash basis taxpayer must include the full amount of income in the year it is received. This differs from accrual basis accounting, where income is recognized when it is earned. Tax treatment rules also vary from financial accounting standards.
Step-by-step explanation:
With respect to the unearned income from services, the correct statement is c. A cash basis taxpayer must report all of the income in the year received. This is because, under the cash basis method of accounting, income is only recognized when cash is received, not when the services are performed. Therefore, if a cash basis taxpayer receives payment for services that will be provided in the future, they are still required to record this income in the year it is received. This approach is different from an accrual basis, where income is recognized when earned, regardless of when payment is received.
It's important to note that for tax purposes, the treatment of unearned income can differ from the treatment for financial accounting purposes. There are specific rules and elections that may allow accrual basis taxpayers to defer income under certain circumstances, but the general principle for cash basis taxpayers remains the same; they must report the income when it is received, not when it is earned.