For individuals, the last day to file 2022 taxes without an extension is April 15, 2023, unless extended because of a state holiday. However, if you requested a six-month tax extension using Form 4868, the deadline was October 16, 2023. Therefore, the last day to file 2022 taxes depends on whether you requested an extension or not. If you did not request an extension, the deadline has already passed. If you did request an extension, the deadline was October 16, 2023.