Over the course of your career, you'll probably have tens of thousands of dollars in Social Security payroll taxes withheld from your paychecks. Workers are confident that by paying those taxes up front, they'll be able to collect Social Security benefits for the rest of their lives when they decide to retire, and that's a fair trade-off for the financial security and peace of mind that those benefits will give them.Shockingly, the federal government forces some Social Security recipients to include a portion of their benefits in their taxable income.