For 2014 and 2015, the total contribution limit for all of an individual's traditional and Roth IRAs is $5,500 or $6,500 if age 50 or older according to the IRS. In addition, contributions cannot be more than an individual's taxable compensation for the year even if below the maximum limit.
Roth IRA contributions may also be limited by an individual's modified adjusted gross income according to the IRS. For 2015, married individuals filing jointly with a MAGI of less than $183,000 may contribute up to the limit. Individuals filing single, head of household or married filing separately may have a MAGI less than $116,000 in 2015 and contribute up to the limit. Once MAGI reaches $193,000 for married individuals filing jointly and $131,000 for individuals filing single, head of household or married filing separately in 2015, no money may be contributed to a Roth IRA.