“CBO regularly publishes reports presenting projections that indicate what federal deficits, debt, revenues, and spending—and the economic path underlying them—would be for the current year and for the next 10 years if existing laws governing taxes and spending generally remained unchanged. This report is the latest in that series.

Deficits. In CBO’s projections, the federal budget deficit is about $900 billion in 2019 and exceeds $1 trillion each year beginning in 2022. Over the coming decade, deficits (after adjustments to exclude shifts in the timing of certain payments) fluctuate between 4.1 percent and 4.7 percent of gross domestic product (GDP), well above the average over the past 50 years. CBO’s projection of the deficit for 2019 is now $75 billion less—and its projection of the cumulative deficit over the 2019–2028 period, $1.2 trillion less—than it was in spring 2018. That reduction in projected deficits results primarily from legislative changes—most notably, a decrease in emergency spending…”