If you’re actually working as a contractor for the company, no longer receiving a W-2 is correct. However, the 1099-MISC has been replaced by Form 1099-NEC (see this TurboTax article) for self-employed people. (You could mention this to them, in case they haven’t updated things yet.) This also depends on your treatment as a contractor being correct , and your actually no longer being an employee (the IRS is touchy about this subject, which is discussed here).
The rest of your tax treatment depends on some additional info not included in your post. If you have been in the U.S. long enough to become a “resident for tax purposes” (based on the “Substantial Presence Test” — this IRS link is quirky, and you have to scroll up a little), then the question of whether you consider yourself to have permanently left the country (and whether your your actions support that) would determine if you’d continue to file form 1040, or be a “Dual-Status Taxpayer” (here) for the year.
If you hadn’t yet become a resident (through the Substantial Presence Test), you would continue to file Form 1040NR (which you should already be doing) for the year you leave (assuming you had income while here). But you would probably no longer be subject to U.S. tax law in subsequent years if you had no U.S. source income (which doesn’t include money paid to you by a U.S. company while you’re a contractor abroad).
Please give us more details about your stay in the U.S. so far and your situation with the U.K. move. We won’t be able to tell you how much tax you need to pay, but we can probably give you more specific guidance about how to file...
¡Gracias, @fggrau94!
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
