Republican senators struck a deal this week paving the way for potentially $1.5 trillion in tax cuts over the next decade, suggesting broad outlines of a plan to be presented next week.
Sens. Bob Corker, Tennessee Republican, and Patrick J. Toomey, Pennsylvania Republican, said their agreement on a 2018 blueprint will give lawmakers enough room to craft a tax package that lowers rates and flattens the code.
The plan could deepen the deficit in the short run, but the two budget writers hope it improves finances over time.
Mr. Corker’s backing was considered critical to writing a 2018 budget that would allow for debate on tax cuts without a Democrat-led filibuster in the Senate.
It also signals the kind of senator-by-senator negotiations Republican leaders are engaged in as they rush to meet a self-imposed end-of-year deadline.