How do I split a 1099-INT for bond purchased while married and that only has me on it, but I'm now divorced and filing as a single individual

While I was married, I purchased a series I bond using joint marital money. The bond was purchased with ONLY me as the name/SSN on it.

 

I was officially divorced in January 2024. 

Per our agreement, immediately after the divorce was finalized, I cashed out a series I bond in February 2024. We split the money (which was the agreement since it was purchased with marital funds)

 

I am now getting ready to do my taxes for year 2024 and the government sent me a 1099-INT for the bond. As expected, it only lists me. The Interest earned and reported on the 1099-INT needs to be split between me and my ex 50/50 however. We are in different tax brackets.

 

What would be the proper way to do this?

I read something about a nominee thing but I'm not sure this is correct, or how I go about that, or how you do the paperwork. I'm not sure if there are deadlines either such as the ex needing a 1099 from me by Jan 31st?

 

No idea if a 1099-INT can be split and how you do it