When it comes to handling the decedent's bank accounts, we're here to make the process as simple and straightforward as possible. One thing for sure is that the bank will want to know the specific reasons for the removal request as the next-to-kin.How do i write a letter for next of kin (father) who is willing to give up his rights to heir in son inheirtance? We can provide you with guidance on how to fill out forms. We can usually answer questions about court deadlines. Access our financial planning and report fraud forms and submit online. Note: If you are Heir at law, Next of kin, or Beneficiary you must be able to establish a material interest in the estate or trust. Documentation.