Rates are set by fiscal year, effective October 1 each year. Find current rates in the continental United States ("CONUS Rates").
Yes.
From a tax reporting standpoint, the cash method is more flexible because it can be used to defer the reporting of income from one tax year to the next. This is because, under the cash method, income is only reported when actually or constructively received.
A common year-end strategy for calendar year taxpayers is to send out invoices late in December to ensure payment of those invoices is not received until the following tax year, thereby deferring the reporting to that year.
However, from an internal financial reporting perspective, the cash method does not produce accurate results from period to period because it does not adhere to the matching principle, an accounting principle which states that expenses should be recognized in the same reporting period as the related revenues.
Using the accrual method for internal financial reporting purposes is a good idea for at least two reasons:
How each accounting method affects financial and tax reporting:
Under the accrual method, income is reported when earned, regardless of when actually received. Expenses are reported when incurred, regardless of when actually paid.
Under the cash method, income is reported when actually or constructively received. Expenses are reported when actually paid.
The following example demonstrates the financial and tax reporting affect of the cash and accrual methods of accounting:
Financial Statement Reporting - Income Statement:
As you can see, income statement reporting under the accrual method is accurate.
Under the cash method, the matching principle is not adhered to, causing a distortion in the financial results of December 2017 and January 2018. December 2107 net income is understated by $5,000 and January 2018 net income is overstated by $5,000.