Talking in trillions and billions is important, but so is making the budget more accessible to Americans. — $5,660,024,200,000. That’s how much federal, state, and local governments spent in 2015. $3,740,300,000,000. That’s how much the federal government alone spent in 2015. $887,700,000,000. That’s how much the federal government spent on Social Security — one of its largest single items. Dizzy yet? I wouldn’t blame you.