You should also use Form 843 when you are requesting a refund of penalties and curiosity or an addition to tax that you just already paid. You should utilize this Form 1040X if you can find changes within your filing status, income, credits or deductions. (Go through more details on https://jaidenxmzoa.blogdeazar.com/35710071/the-basic-principles-of-how-to-fix-errors-on-a-previously-filed-tax-return