I always feel nervous when I have to amend a client’s taxes. After all, that means that the ability of the IRS to audit their report continues. Normally, there is a 6 year deadline for audits. Except that time frame starts from the due date of the return or the time the taxes are filed- whichever is later. (Yes, that means just because you filed in January of this year for 2021 does not mean that the audit period lapses on 31 January 2028; nope- it’s still [for this year, which the altered due date] 18 April 2028.