The long-term deficit analysis CBO released Tuesday goes beyond its typical assessments of budget outlooks within the next decade. The analysis makes clear the deficit projections are impossible to gauge with complete precision, in part because it cannot account for unforeseen changes to federal policy, economic trends or global events.
The CBO projects the Republican tax law passed last fall will add US$1.84 trillion to the federal deficit over the next 10 years. Republican leaders have argued the cuts will jump-start the economy, creating enough economic growth to offset much of their additions to the debt. But CBO and other nonpartisan analysts have repeatedly rejected that claim.
Beyond 10 years, CBO says its estimates are far less precise, but it does not see the tax law creating large-scale, long-term additions to the national debt.
"Beyond 2028, the effects of the [tax law's] major permanent provisions are expected to be modest, although their precise magnitudes are highly uncertain," CBO said.
In its analysis, the CBO assumes the law's individual-income-tax cuts will expire before the end of this decade. In writing the bill, Republicans set those rates to expire as part of an effort to get their measure to comply with the procedural rules they used to pass it through the Senate. But GOP leaders repeatedly said the tax cuts will not be allowed to expire, promising a future Congress will act to extend them. If the individual tax cuts are extended, the law's projected additions to the deficit would probably increase dramatically.
- Washington Post