Hi,
I had an extension to file my 2018 return until Oct 15. I missed that date and am in the process of filing my return now. A few days ago, I contributed to my SEP Ira account for 2018. Unfortunately I made a mistake and contributed about $1000 too much. I had paid all my estimated taxes on time, and am due a small federal refund, (I owe about $400 CA state tax).
Question is, can I even contribute to my SEP at all at this late date, even though Vanguard accepted it as 2018 employer contribution? Since I am due a refund, then does my tax filing deadline then become 3 years later, since that is how long I would have to claim my refund? If so, then is it ok to contribute to my SEP this late?
Also, If all is ok with the late contribution, how can I account for the approx $1000 overpayment? I haven't sent in the returns yet, so I didn't "file" the incorrect amount. Can I just have Vanguard apply the overage to my 2019 contribution? I h
