Browse Foundations of Investing for New Investors

Retirement Accounts and How They Differ

Learn the broad differences among traditional IRAs, Roth IRAs, and employer-sponsored retirement plans.

Retirement accounts are designed for long-term saving, but they are not interchangeable. The main differences usually involve who sponsors the account, whether contributions are pretax or after-tax, how growth is taxed, and what rules govern withdrawals.

At an introductory level, investors should focus on the broad distinctions that affect planning and exam-style comparisons. This section covers traditional IRAs, Roth IRAs, and common employer-sponsored plans such as 401(k) and 403(b) arrangements.

Those comparisons matter because contribution treatment, employer involvement, and distribution rules can change the long-term after-tax value of the same retirement contribution.

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Revised on Thursday, April 23, 2026