Bob Herman Dec 11
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How health insurers would benefit from tax reform
health insurance aetna tax reform
Health insurers like Aetna would reap big gains from the Republican tax overhaul. Photo: Bill Sikes / AP

Large health insurance companies would be among the biggest winners under Republicans' tax overhaul bill. Nearly all of their business is based in the U.S. and they consequently pay close to the full 35% corporate tax rate.

The bottom line: Cutting the corporate tax rate to 20% would instantly boost insurers' profits. Some of that benefit could result in lower premiums for anyone who has health coverage, but insurers would also find ways to keep as much of that money as possible.