The Budget Deficit in September 2021 was $59 billion

 The federal government incurred a deficit of $59 billion in September 2021, CBO estimates— $65 billion less than the shortfall in September 2020. The federal budget deficit was $2.8 trillion [actually $2.770 trillion] in fiscal year 2021, the Congressional Budget Office estimates—$362 billion less than the deficit recorded in fiscal year 2020. Although outlays rose by an estimated $265 billion (or 4 percent), revenues rose more—by an estimated $627 billion (or 18 percent). https://www.cbo.gov/system/files/2021-10/57476-MBR.pdf

The outlays for FY 2021 were 6,817, which is 265 billion more than the 6,552 in 2020. Net Interest on the Public Debt was $413 billion in fy-2021, up 25 billion or 6.6%.