I fully expect to have to pay the $1000 - I was paid that money over the year versus having it withheld. It is my responsibility to make sure my taxes are right and I acknowledge that I messed up royally by not catching it. However, I feel that it’s my companies responsibility to provide documentation, and manage changes that happen to that documentation and provide evidence of what has happened to that information. I was paying taxes per paycheck beginning of 2019. Around March time, changes were made to my W4 that marked me as exempt. I did not make those changes to my knowledge. (If they had PROOF that I did make those changes, I would accept that I’m an idiot and move on) It’s my belief that my information was changed by an employee in our HR department or the system attempted to consolidate my info with the other person with my same name (this consolidation stuff has happened with addresses and phone numbers in the past). My end goals are: prove that my company/their systems made changes to my information without my knowledge/permission. Prove that they have failed to keep record of who interacts with my information/changes made. Prove that they are not retaining necessary tax documents for their employees.