Tax Deadline 2024 Massachusetts Extension. The filing deadline to submit 2023 returns or file an extension is monday, april 15, 2024, for most taxpayers. You must send payment for taxes in massachusetts for the fiscal year 2023 by april 16, 2024.
If you file for an extension, you have until october 15, 2024, to file your return, but you still must pay any taxes you owe by april 15, 2024, unless you’re a. The extension deadline is october 15, 2024 to file your massachusetts income.