If I am being paid in the US by a US company while working in a foreign country for the entire year, how do I file? or is there even any benefit or tax breaks?

[pk]

Are you US citizen/resident ?  Which country?  When did you leave the USA and have been there continuously since then ?  Is your family with you?  Are you on  a temporary assignment  that was extended?

[elyselynee]

Are you US citizen/resident ?  - yes, born and raised American citizen, was only in Mexico for 1 year (2018) for a work assignment.
Which country?  Mexico
When did you leave the USA and have been there continuously since then ?  Lived there all of 2018... We are now living back at our home in San Diego.
Is your family with you? Yes, they kived with me full time in Mexico for 2018, we are back in the states for 2019.
Are you on  a temporary assignment  that was extended? It was a temporary assignment that was NOT extended. We are back in the USA.

[pk]

Did Mexico tax you on your income or were you in the development zone  ( i.e. maquiladora zones where I think Mexico does not tax the income from abroad ) ?  While you answer I will go through the US/Mexico tax treaty to jog my memry.

[elyselynee]

No tax in Mexico on income .
 Working In Maquiladoras zones

[pk]

Then  you file with your W-2 as if you were in the USA -- this is not foreign income and therefore   not eligible foreign earned income exclusion

[elyselynee]

Ok! Thank you so much for your help.