A 62-year-old investor who does not participate in any qualified retirement plan should consider which account that allows contributions beyond age 70 without required distributions?

The Roth IRA is the most suitable account for a 62-year-old investor who does not participate in any qualified retirement plan and seeks to make contributions beyond age 70 without the requirement for distributions. One of the key features of a Roth IRA is that it allows account holders to contribute at any age, as long as they have earned income. Additionally, unlike other retirement accounts, there are no required minimum distributions (RMDs) during the account holder's lifetime. This flexibility makes the Roth IRA a powerful option for retirees who wish to continue contributing to their retirement savings while maintaining control over their withdrawals.

In contrast, Traditional IRAs and SEP IRAs generally impose RMDs starting at age 72, which means that account holders must begin withdrawing a certain amount each year, regardless of whether they need the funds. The 403B plan also has RMD requirements at the same age, which further limits the investor's control over their funds in retirement. Thus, the nature of the Roth IRA aligns perfectly with the investor’s goals of continued contributions and no mandated distributions.