Term At age 701/2, you must start, except if have a Keogh account and are gainfully employed or you have a Roth IRA. Aimed at small-business owners, this pian is just like a Keogh plan. For people in their 30s and 405 , a Roth IRA Is an appropriate investment decision. Couples fling jointly (even when participating in a retirement plan at their places of work) can open this type of account as long as their adjusted gross income is less than $98,000 ( $61,000 for single taxpayers. Couples filing jointly with adjusted gross incomes of up to $193,000 (\$131,000 for single filers) can open this type of account, without regard to participation in an employer retirement program