You must have earned income to be able to contribute to a Roth IRA, but you can contribute at any age (the cutoff is 70 1/2 for traditional IRAs). If you are 50 or older, you can contribute up to $6,500 for 2013 and 2014.owever, you cannot make contributions if your income exceeds certain limits. For 2013, the eligibility to contribute to a Roth IRA phases out at $188,000 for married filers and $127,000 for singles ($191,000 and $129,000, respectively, for 2014).