Individual retirement accounts (IRAs) offer a tax-advantaged way for workers of any income to save for retirement. There are three main benefits to contributing to an IRA: 1) tax deferral allows savings to grow over time without paying taxes on investment earnings until retirement; 2) IRAs provide flexibility as workers can choose their contribution amount and timing and have options like traditional or Roth IRAs; 3) workers can roll over assets from employer 401(k) plans to an IRA when changing jobs to continue saving for retirement without tax penalties. As of 2015, over 40 million U.S. households had IRAs with a total of $7.3 trillion invested, showing their importance as one part of a multi-