The Effective Corporate Tax Rate Is Falling
by Martin A. Sullivan
Document originally published in Tax Notes
on January 22, 2007.
Four years ago, Treasury closed the books on another fiscal year and counted $148 billion in corporate income tax receipts for 2002. At the same time, it bravely predicted corporate receipts would increase to $234 million for fiscal 2006 " a 58 percent increase in four years.
Treasury was wrong, but nobody " least of all Treasury " is complaining. The final numbers are in, and corporate tax receipts for 2006 total a remarkable $354 billion " a 139 percent increase in four years. Figure 1 on the next page depicts this fiscal phenomenon.
After years in the doldrums, the corporate tax is back. It's a moneymaker exceeding all expectations. And its surprising strength is the main reason the Bush administration and Congress are getting a breather before they are again forced to consider the looming long- term federal budget deficit.
Surging profit is the main factor behind this good fiscal news. Figure 2 on the next page shows the latest Commerce Department data on domestic corporate profits. Like income tax receipts, profits are on a rapid upward trajectory. Domestic corporate profits have nearly tripled in the last four years, rising from $554 billion in fiscal 2002 to $1,527 billion in fiscal 2006.
From K Street to the Capitol, the corporate tax windfall is making life easier for official Washington. But before anyone gets too comfortable, it'd be a good idea to pause and consider the facts a little more closely. The data also show that the corporate tax intake per dollar of profit " that is, the effective corporate tax rate " is falling. It now stands at a 10-year low of 22.2 percent " the tail end of the solid line in Figure 3 on p. 282.
This most recent decline appears to be part of a longer-term trend. The five-year average effective corporate tax rate for 1997- 2001 was 29.7 percent. The average for 2002-2006 was 25 percent.
That trend in the national data corroborates the trend seen in other data sources. Large pharmaceutical and high-tech companies have reported declining effective tax rates in their annual reports. (See "Drug Firms Move Profits to Save Billions," Tax Notes, Aug. 7, 2006, p. 472, Doc 2006-14640 or 2006 TNT 152- 5 ; and "High-Tech Companies' Tax Rates Falling," Tax Notes, Sept. 4, 2006, p. 818, Doc 2006-18379 , or 2006 TNT 171-6).)
A Fresh Look
The dashed line in Figure 3 represents what we reported on this topic last summer ("Despite Rapid Growth, Corporate Tax Receipts Fall Short," Tax Notes, July 17, 2006, p. 216, Doc 2006-13336 , 2006 TNT 137-3 ). The difference between the two lines in Figure 3 is attributable to revisions in the official data on corporate profits over the last six months. In July, based on official estimates available at the time, we assumed that corporate tax receipts for fiscal 2006 (which ended on Sept. 30, 2006) would total $330 billion. As noted, the actual amount turned out to be $354 billion.
Standing alone, that change would have resulted in an upward revision in the corporate effective tax rate for 2006. But revisions to domestic corporate profit data (the denominator of the effective tax rate fraction) were even larger. In July the figure for fiscal 2006 was estimated to be $1,312 billion. Now, as shown in Figure 3, we know the actual figure for 2006 is $1,527 billion.
Based on the July estimates, we concluded at the time that "the current burst in corporate receipts should not give us any comfort that the era of corporate tax shelters is coming to a close."
The revised estimates, which show a more pronounced decline in the estimated effective corporate tax rate, require a stronger conclusion: The recent surge in corporate tax revenue has been accompanied by a decline in estimated effective corporate tax rates that is not explained by changes in tax law.
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