need help about reimbursement and W2

 

Hello Tax expert, 

 

I want to explain my situation below for your understanding:

 

1. My employer paid half the rent while I was working for him for several months and coronavirus test and he paid as "reimbursement" on paystub.

(a)He was a guarantor for the rent so he signed on some rent documents. 

(b)He asked me to move to that place nearby his business address due to increase of work as I was working for him abroad remotely. 

(c)He asked me to provide the total rent receipt as his CPA needed that ( I don't know why)

 

2. On my 2021 w2 form, those reimbursements are not included. 

 

3. I double checked with him, those reimbursements are not my income. 

 

Question1. )

I believe I don't have to report this as my employer told me to do so. Do I have to report those reimbursement for tax filing? 

 

Question 2)

If I have to report, how? If I don't have to report but need some documents as proof, what do I have to prepare? 

 

Question 3)

He also paid some transportation as I had to take an Uber when commute for work. Do I also have to report this even though it is not included on W2?

 

Thank you so much for your help.