American Business Competitiveness Act of 2010

American Business Competitiveness Act of 2010 - Amends the Internal Revenue Code to: (1) reduce to 23% the maximum income tax rate for corporations; (2) set forth rules for the allocation of foreign-related tax credits and deductions; (3) repeal rules for the application of the worldwide allocation of interest for purposes of computing the limitation on the foreign tax credit; (4) repeal the last-in, first-out (LIFO) and the lower of cost or market methods of inventory; (5) make permanent the increased ($250,000) expensing allowance for depreciable business assets; (6) increase from 15 to 20 years the amortization period for goodwill and other intangibles; (7) set forth rules for the application of the economic substance doctrine to tax transactions; (8) reduce the percentage of the deduction for dividends received; (9) require the recognition of ordinary income on the sale or exercise of a stock option in an S corporation with an employee stock ownership plan (ESOP); and (10) allow nonrecognition of gain in a corporate reorganization for corporations that exchange property solely for stock other than nonqualified preferred stock.