February 8, 2017 Graphic Mandatory spending by the federal government totaled $2.4 trillion in 2016, of which $1.6 trillion was for Social Security and Medicare. View Document179.53 KB Summary Related Publications Discretionary Spending in 2016: An InfographicFebruary 8, 2017 Revenues in 2016: An InfographicFebruary 8, 2017 The Federal Budget in 2016: An InfographicFebruary 8, 2017