I have a question regarding my filings for this year (2018)

[steve-waddell]

I received a letter from My employer stating  that my social security wages were underreported on my 2018 W2 and my FICA payroll tax withholding for 2018 was under withheld. Problem is my taxes have already been filed, accepted, approved, and refund sent.  What do I do?

[JohnW15]

This isn't an issue that would likely have an impact on your return.  If your employer doesn't send you a corrected Form W-2, there's probably no reason for concern.

Please see the TurboTax FAQ "Do I need to amend?" below for common scenarios that would require an amended return filing.  

https://ttlc.intuit.com/replies/3318732