Normally, when spouses file a joint tax return, they are equally liable for any misstatements or fraud. This sounds like it goes back to the 2018 tax season? When was the 2018 return filed? You need to file a fraud report with the IRS that indicates your spouse signed your name to a joint return without your permission or agreement. You may also need to file your own separate returns for the years in question (married filing separately) although that will be difficult since you can’t normally file a separate return after a joint return (that’s part of the fraud complaint).
You should talk to your attorney about adding a tax specialist attorney to your legal team.
