Discretionary outlays by the federal government totaled $1.6 trillion in 2021, of which $742 billion was for national defense and $895 billion was for nondefense activities.

    

Mandatory outlays by the federal government totaled $4.8 trillion in 2021, of which $1.8 trillion was for Social Security and Medicare.

    

Revenues received by the federal government in 2021 totaled $4.0 trillion, of which $2.0 trillion was receipts from individual income taxes.

    

The federal deficit in 2021 was $2.8 trillion, equal to 12.4 percent of gross domestic product.