The tax laws generally require individuals with retirement accounts to take annual withdrawals based on the size of their account and their age beginning with the year they reach age 70½. Failure to take a required withdrawal can result in a penalty of 50% of the amount not withdrawn.
If you turned age 70½ in 2014, you can delay your 2014 required distribution to 2015. Think twice before doing so, though, as this will result in two distributions in 2015 — the amount required for 2014 plus the amount required for 2015, which might throw you into a higher tax bracket or trigger the 3.8% net investment income tax. On the other hand, it could be beneficial to take both distributions in 2015 if you expect to be in a substantially lower tax bracket in 2015.