Can a co-signer of new car loan qualify to claim the new car interest tax deduction? It's my son's car, but the car is titled in both names.

[DoninGA]

Only the person whose name is on the new car loan is eligible to deduct the loan interest on their federal tax return.

[Opus 17]

The instructions and regulations have not been finalized.  Based on the how the law is worded, my best guess is that to use the interest deduction, the taxpayer must (a) own the car, and (b) pay the interest.  If the car is titled in both names, you are an owner.  But who makes the payments?