Following the Tax Reform Act of 1986, the base of the corporate income taxwas broadened but the top rate was slashed by 12 percentage points, from 46% to34%, the biggest cut since the tax was introduced in 1909.

• 1986年税务体制改革法案扩大了公司税税基，同时把最高税率调低了12个百分点，从46%25降至34%25，这是1909年开征公司税后最大幅度的调整。