CPAs on the “auditing and accounting” side of the profession have been studying FASB Accounting Standards Update 2014-09, “Revenue from Contracts with Customers (Topic 606)” since it’s issuance last year.  It turns out, though, that not only CPAs dealing with A&A issues have concerns—the IRS now has issued a notice asking for guidance of the impact of ASU 2014-09 on accounting methods for tax purposes in Notice 2015-40.