I recently accepted a job that gave a $5000 signing bonus.  1 month into the job, I realize that the position is not for me and am going to move on.  I know that I have to pay back the signing bonus but I only received $2700 after tax. 
Do I have to pay back the $2700 or the entire $5000? I know my new company is giving me $5000 to pay back my old company, but that will also be taxed.
Does anyone have any experience with a similar situation?
UPDATE:
Okay, so its my last week.... and it seems like my company issued my bonus in 2007 since it showed up on my 2007 W2's. I now have to pay back the company the full 5000 since they submitted my earnings to the IRS already, which is fine.
I asked them if it should be reflected in my 2008 W2's and they said NO. Does this make sense???? My 2007 W2 will report that I made $5000 more. Shouldn't my W2 for 2008 reflect that I made $5000 less?
			
			Do I have to pay back the $2700 or the entire $5000? I know my new company is giving me $5000 to pay back my old company, but that will also be taxed.
Does anyone have any experience with a similar situation?
UPDATE:
Okay, so its my last week.... and it seems like my company issued my bonus in 2007 since it showed up on my 2007 W2's. I now have to pay back the company the full 5000 since they submitted my earnings to the IRS already, which is fine.
I asked them if it should be reflected in my 2008 W2's and they said NO. Does this make sense???? My 2007 W2 will report that I made $5000 more. Shouldn't my W2 for 2008 reflect that I made $5000 less?
				
		
			