The updated findings from the Congressional Budget Office amounted to the latest dour report card for the president’s signature legislation.
House Republicans’ sprawling package to cut taxes and slash federal safety-net programs would add about $3.4 trillion to the debt, according to nonpartisan congressional analysts, who reported on Tuesday that the minor gains in economic growth under the bill would not offset its full fiscal impact.
The updated findings from the Congressional Budget Office amounted to yet another dour report card for the president’s signature legislation, which passed the House last month but now faces the prospect of significant revisions to its core components in the Senate.
In its current form, the House Republican bill would extend and expand a set of expiring tax cuts enacted by Mr. Trump during his first term. It would pay for some of those expensive components with deep cuts to federal anti-poverty programs, including Medicaid and food stamps.
The C.B.O. report issued on Tuesday sought to project the ways the bill would interact with federal spending and the U.S. economy, building on its earlier finding that the House-passed measure carried a roughly $2.4 trillion price tag.
The nonpartisan analysts found that the House approach, if signed into law, would deliver a 0.09 percent boost to annual growth rate in the nation’s gross domestic product in the first few years after enactment, compared to current projections.
The budget office said that lower taxes would spur some American families and businesses to spend and invest more. But it also determined that the uptick in economic activity would not be sufficient to cover the costs of the legislation. Even after factoring in spending cuts, the proposal would still add nearly $2.8 trillion to federal deficits over the next 9 years, according to the official tally from C.B.O. The figure grows to about $3.4 trillion if the full costs of federal borrowing are included.