For most taxpayers, no, you can't file your return after April 18 without it being considered late. April 18 is the deadline to submit your return, pay taxes owed, and file an extension.
There are a couple exceptions:
- You're a resident of Maine or Massachusetts. You have until April 19 to file your returns due to the Patriots' Day holiday. Or,
- You're a U.S. citizen or resident alien and you are out of the country on April 18
The IRS considers you out of the country if:
- You're living outside the United States or Puerto Rico and your main place of business or post of duty is outside the United States or Puerto Rico, or
- You're on duty in the military or naval service outside the United States or Puerto Rico