Actually a good question. I believe YOU will bear the xtra tax burden on the extra 6K the company paid on your behalf. Anything thing you get In your pocket or Paid to a 3rd party on your behalf will be taxed as income you received.

Similar to when they closed the EWR Base and gave the ones that wanted it a paid move to MEM. While the move package was a good deal because they paid everything, ( house hint trips, realtor commisions, home inspections and complete movement of Household goods) the extra benny was taxed as income. While the company did give me some cash (1 months base salary) to cover the additional taxes) My taxes were higher that year. Called a Gross UP