yes $1. the easiest thing to do would be to omit line 13K. Turbotax does not support the form which means if you have that $1, you won't be able to e-file You would have to manually complete the 8990 and enter the $1 if deductible, on the appropriate form and then mail in your return with the 8990. The mailing costs would negate any tax savings from that $1.
