<prompt> Human: Ive always had a 401k and have always contributed to that. Never had an IRA. Im now fortunate enough to be maxing my 401k and looking for other options. Ive seen posts here multiple times about IRAs and Ive read the sidebar many times... but I still have some questions.For 2018 Roth IRA: Contribution limit is 5500 under 50 and income limit is 120k single. My gross income will be over this limit. However, if the AGI on my 1040 is 120k, I can contribute the full amount to Roth IRA? Is my understanding correct?Secondly, I can contribute to the 2018 IRA up through roughly April 15, 2019? As I am close to the income limit and dont want to risk penalties, Id prefer to file my taxes early to ensure my AGI is below the limit and if so then dump the max amount into the IRA. Is my thinking correct? Thanks for confirmation!  <response>: You can contribute for 2017 until Apr. 17, 2018. If your 2017 AGI is below 118k, Id go ahead and contribute 5500 on behalf of 2017 right now. 