Book income is the amount of income corporations publicly report on their financial statements to shareholders. This measure is useful for assessing the financial health of a business but often does not reflect economic reality and can result in a firm appearing profitable while paying little or no income tax. ~ Tax Foundation

In August, President Biden signed a minimum book income tax into law under the 2022 Inflation Reduction Act. The law was passed in both chambers of congress by Democrats.

Book income is the amount of income corporations publicly report on their financial statements to shareholders, explains the Tax Foundation.

The appeal of the minimum book tax for Democrats is two-fold, explains Laura Davison, in an article written for Bloomberg.com.

• First, the minimum tax goes after corporations that many Democrats say don’t pay enough in taxes.
• Second, it’s a way to raise taxes on corporations without increasing the 21% headline tax rate.

Senator Joe Manchin, Democrat (WV), says the minimum tax doesn’t so much raise taxes as close a loophole — even though it would mean that some corporations have to pay more to the federal government.

The law enforces a 15% corporate minimum tax targeted at companies that earn more than $1 billion a year. President Joe Biden cited a report in his State of the Union address that found that 55 companies paid no federal income taxes in 2020, despite earning profits under the standards of GAAP.

The corporate minimum tax would require companies with at least $1 billion in income to calculate their annual tax liability two ways:

• One using longstanding tax accounting methods, which is 21% of profits less deductions and credits;
• The other by applying the 15% rate to the earnings they report to shareholders on their financial statements, commonly known as book income.

Whichever amount is greater would be what they owe to the IRS.

A corporation’s profits for tax purposes and for financial reporting to shareholders often vary. Book income sticks more closely to generally accepted accounting principles, or GAAP, while the Internal Revenue Service code includes a slew of deductions and credits that companies can use to offset their income. 

This roundabout method to collect more money from corporations provides much of the new revenue to fund the energy investments and deficit reduction that Democrats are hoping to tout in the midterm elections this November.

References:

1. https://www.bloomberg.com/news/articles/2022-08-01/how-the-15-us-minimum-corporate-tax-would-work-quicktake
2. https://taxfoundation.org/tax-basics/book-income-vs-tax-income/