In a long-awaited development, the largest audit in the history of the IRS has finally taken its next step. On Wednesday, Microsoft announced that the agency had notified the company that it owes $28.9 billion in back taxes, plus penalties and interest.
The case is epic not only in dollars but in scope. As ProPublica reported in an in-depth narrative in 2020, in a story co-published with Fortune, the IRS saw the case as a chance to prove the agency’s effectiveness. Often cowed by the prospect of facing off against corporations with endless resources, the IRS set out to be bolder and more aggressive. It took the unusual step of hiring a corporate law firm to represent the agency, a step that incensed Microsoft. The company, along with others in its industry, responded by rallying allies in Congress to rein in the IRS.
