Amended Return​​ Fill in this oval only when you are amending your 2023 PA tax return. Please read the instructions beginning on Page 42.To obtain an Affidavit of Correction, you need to download the form from the PennDOT website, fill it out accurately, and submit it. Corporations that have business activity outside Pennsylvania must complete and file the. No changes may be made to this form either in content or format without the express written approval of the Administrative Office of Pennsylvania Courts. How do I change my address for my check? A Change of Address form can be found in the Owner Forms section. No, you do not need to include a copy of the federal tax return with your PA40X. But, you should wait until the original 2019 PA-40 has been processed. Rule IX: Updates to Pennsylvania Construction Classification Premium Adjustment Program.