Traditional and Roth Individual Retirement Accounts (IRAs): A Primer [Updated March 2, 2020] [open pdf - 1MB]
From the Document: "In response to concerns over the adequacy of retirement savings, Congress has created incentives to encourage individuals to save for retirement through a variety of retirement plans. Some retirement plans are employer-sponsored, such as 401(k) plans, and others are established by individual employees, such as Individual Retirement Accounts (IRAs). This report describes the primary features of two common retirement savings accounts that are available to certain individuals--traditional and Roth IRAs. Although the accounts have many features in common, they differ in some important aspects. Both traditional and Roth IRAs offer tax incentives to encourage individuals to save for retirement. Contributions to traditional IRAs may be tax deductible for taxpayers who (1) are not covered by a retirement plan at their place of employment or (2) have income below specified limits. Contributions to Roth IRAs are not tax deductible and eligibility is limited to those with incomes under specified limits."
CRS Report for Congress, RL34397
Congressional Research Service: https://crsreports.congress.gov/