I have a new client this year who has been repaying the 2008 first time homebuyers credit. He sold his primary residence in 2018. I requested the purchase and sales information so I could complete the Form 5405, he told me that the credit was for a home he purchased in 2008 and sold in 2011. The 5405 was never filed and he's been repaying the credit all these years.

I'm not sure how to reconcile this for him. It's looking like he will not have a gain on the sale. As far as I can find I can't go back and amend the 2011 return. Should I fill out the 5405 as if the home was sold in 2018?

I appreciate any insight on this!