WASHINGTON—The Internal Revenue Service plans to spend $291 million updating 140 computer systems to help it implement the new tax law, according to a previously undisclosed agency document.
Those information-technology costs and other back-office operations will consume more than 90% of the money Congress is giving the IRS for implementation. The IRS is also bracing for a 17% increase in phone calls, planning to revise 450 forms and publications and organizing 40,000 hours of training, according to the document.
...