I am in student visa from Jan 2018 to Sep 2018 for full time work, but I paid Social Security Tax and Medical Tax for 2018. Can I return the two taxes?

[KarenJ]

What visa are you on?  When did you first arrive in the US on that visa?

[brightliang]

I arrived in US on F1 visa on July 30, 2013.

[KarenJ · Accepted solution]

If you arrived in the US in 2013 on an F1 visa, your 5 years or part years were 2013,2014,2015,2016 and 2017.  You are a US resident since January 1, 2018 as you passed the substantial presence test in 2018.

As a resident in 2018, you have the same liability for Social Security and Medicare taxes as US citizens.

https://www.irs.gov/individuals/international-taxpayers/foreign-student-liability-for-social-securit...

https://www.irs.gov/individuals/international-taxpayers/alien-residency-examples