Hospital chain HCA Inc. and the Florida Department of Revenue have settled a years-long corporate-income tax battle worth more than $60 million.

Under the terms of the settlement, obtained by Florida Trend through a public-records request, the revenue department has stopped pursuing $28.1 million in back taxes that it once said HCA illegally evaded. At the same time, Nashville, Tenn.-based HCA has dropped claims for $32.4 million in refunds for taxes it said it had mistakenly overpaid.

The dispute involved three lawsuits and covered more than a decade of HCA’s Florida tax returns, from 2001 to 2012. It centered on various strategies HCA has used to lower its Florida tax bills, including passing billions of dollars between subsidiaries – in the form of intra-company insurance premiums, loans, management fees and more – in order to reduce the percentage of its profit that Florida could tax. The battle was the subject of the story “Tax War” in the February 2016 issue of Florida Trend.

Emails show the settlement was first broached in a Feb. 25 meeting involving, among others, HCA accountants and former Department of Revenue Executive Director Marshall Stranburg. During that meeting, HCA’s representatives said they “could agree to a wash” in order to resolve the cases.

The settlement was executed March 28^th, with signatories including R. Lee Grubbs, HCA’s vice president for tax. HCA withdrew its suits against the revenue department two days later. Stranburg formally exited the department two days after that, on April 1, to begin a new job with the Multistate Tax Commission in Washington, DC.

A portion of the settlement was redacted by the Attorney General’s Office, and it is unclear whether or how the agreement will affect the ability of HCA – or other companies – to use similar tax-reduction techniques going forward. A spokeswoman for the Department of Revenue said she could not answer the question. A spokesman for HCA did not respond to a request for comment.