<human>:  What are the key differences between a Roth IRA and a traditional IRA?
<bot>: The key differences between a Roth IRA and a traditional IRA are the taxes associated with them. With a traditional IRA, contributions are not subject to taxes, but withdrawals are subject to income taxes when taken. With a Roth IRA, contributions are made with taxed dollars, but withdrawals are tax-free. Additionally, Roth IRAs have more flexibility in terms of distributions and withdrawal rules, while traditional IRAs have a mandatory distribution requirement at age 70 ½.