The Congressional Budget Office projected that President Donald Trump’s tariff agenda, if maintained, would decrease total deficits by up to $4 trillion over the next decade.

The CBO, Congress’s nonpartisan scorekeeper, released the updated projections on Friday. The CBO found that the effective tariff rate for goods imported into the United States has increased by a notable 18 percentage points from last year.

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If the stance is maintained for the next 10 years, primary deficits would fall by $3.3 trillion, the CBO said. The tariff revenue would also minimize the need for federal borrowing, and would result in $700 billion less spending on interest, driving total deficits down by $4 trillion.

The $4 trillion figure is notably higher than previous CBO estimates because of recent changes to tariffs, according to the office.

“CBO projects further increases in tariff revenues in the coming months,” CBO Director Phillip Swagel wrote. “If there are no further changes in tariff rates, we project that customs duties from new and existing tariffs will total about $200 billion this fiscal year.”

The U.S. is currently facing about $37 trillion in total national debt, and the federal debt per citizen has now climbed to more than $108,000.

The latest estimates on tariff revenue are also notable in the context of recent fiscal policy.

Over the summer, the House and Senate passed the One Big Beautiful Bill Act, which contains Trump’s second-term priorities on tax cuts, energy, and the border, and is estimated to add $3.4 trillion to deficits over the next decade.

In the CBO’s final projection for the megabill, the group said the legislation will represent a $4.5 trillion decrease in tax revenues and a $1.1 trillion cut in spending through 2034.

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In addition to new tariff revenue, White House officials have also argued that economic growth from the bill would offset the deficit hit, although other economic analysts have pushed back on that contention and have projected that it will add to the deficit.

The Council of Economic Advisers released an analysis of the Senate’s reconciliation legislation in late June and asserted that the bill would result in a $2.1 to $2.3 trillion deficit reduction over a decade due to the growth sparked by the tax provisions.