 Income tax 2023-2024, when and where should you file? Get ready and some coffee because we need to know a lot of information to do income tax preparation 2023-2024. Most of this information can be found in the Form 1040 Instructions Tax Year 2023, which you can find on the IRS website, irs.gov, irs.gov. When and where should you file? So for most of us, we're back to the norm here, not having those weird holidays landing on a weekend, pushing that date out. But to file Form 1040-1040 SR, we have the April 15th, 2024 deadline for most of us. However, if you live in Maine or Massachusetts, you have until April 17th because of the Patriots' Day and Emancipation Day holidays. They're just...