One big misconception a lot of people have about retirement is that they won't have to pay a lot of taxes. In reality, there are many different income sources that the IRS could get a piece of. For example, dividends you receive in a regular brokerage will be taxed, and you'll face capital gains taxes if you sell investments at a profit. And if you have your retirement savings in a traditional IRA or 401(k) plan, those withdrawals will be taxable as well. Even your Social Security benefits may be taxable, ...