
The US tax filing deadline is April 15, 2025. Taxpayers can request an automatic extension until October 15 using Form 4868 or IRS Free File. However, taxes owed must still be paid by April 15 to avoid penalties. Late filing penalties start at 5% monthly, capping at 25%. Late payment penalties are 0.5% monthly, increasing to 1% if unpaid after IRS notice. Interest accrues daily at 7%.