The United States IRS has extended the tax deadline for 2021 until Monday, May 17th! This means you have an additional month to file your taxes.
Of course, it is possible to file an extension by submitting Form 4868, which means you have until Oct. 15th to file your taxes. But that doesn't mean you're off the hook if you owe the IRS — the deadline for payment is still May 17th, whether you filed an extension or not. To avoid a penalty, you generally must pay at least 90% of what you owe to the IRS by the May due date. If you do not pay the taxes you owe by Monday, May 17th, you will accrue interest and penalties.
The IRS urges taxpayers who are due a refund to file as soon as possible.