Just to add: You do not need to remove any earnings - only the amount of excess. The earnings (if any) stay in the Roth since you will be paying the 6% penalty in 2015 that qualifies the earnings to stay in the Roth. In 2017 when you enter the 1099-R, you include the 2015 contribution when it asks for prior year contributions so you will not be taxed again on the same money.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
