Senate Republican leaders are considering a one-year delay in the implementation of a major corporate tax cut, four people familiar with a draft of the legislation said, in a move that would postpone a centerpiece of the GOP tax plan. The delay would save $100 billion but could be met with resistance from President Trump, who wants the tax cuts implemented immediately.

Significant differences are also expected on the individual income-tax provisions. Senate negotiators are planning to eliminate the state and local tax deductions that families take, going further than the House bill. They are also expected to retain roughly seven income tax brackets, rather than the four the House has proposed.

Details could change ahead of a formal release of a bill Thursday by the Senate Finance Committee.