2015 Traditional & Roth IRA Maximum Contribution Limits. Unfortunately, 2015 will not bring an increase in the maximum individual retirement account contribution amount. The 2015 maximum IRA contribution limit is still capped at $5,500, the same as the 2014 maximum IRA contribution limit.This comes as a bit of a surprise as the 2015 maximum 401K contribution limit was increased in the same press release.This contribution limit applies to both Traditional IRA’s and Roth IRA’s.or those age 50 and over, the 2015 IRA catch-up contribution will also stay the same, at an additional $1,000. Since the standard contribution is at $5,500, this means the 2015 maximum catch-up contribution plus standard contribution is $6,500 in total.