Tax cuts and pandemic relief measures enacted during the Trump administration added $8.4 trillion to the national debt over the 10-year budget window, according to a study released Wednesday by a top budget watchdog group.

Discretionary spending increases from 2018 and 2019 added $2.1 trillion, Trump’s signature Tax Cuts and Jobs Act added $1.9 trillion and the 2020 bipartisan CARES Act for pandemic relief added another $1.9 trillion, the Committee for a Responsible Federal Budget (CRFB), a Washington think tank, found in a study released earlier this month.

“Of the $8.4 trillion President Trump added to the debt, $3.6 trillion came from COVID relief laws and executive orders, $2.5 trillion from tax cut laws, and $2.3 trillion from spending increases, with the remaining executive orders having costs and savings that largely offset each other,” budget experts with the CRFB wrote in a summary of the report.

The only significant deficit reduction enacted by the Trump administration noted in the report was due to tariffs levied on a variety of imported goods, which are calculated to have brought in $445 billion over 10 years.