Missing the October 15 deadline can result in penalties and interest charges on any unpaid taxes. The failure-to-file penalty is usually 5% of the unpaid taxes for each month or part of a month that a tax return is late, up to a maximum of 25%.

Generally, no further extensions are allowed beyond the October 15 deadline. It's crucial to file your return or request an extension by the original April deadline to avoid penalties if you think you owe tax.

You'll need W-2s from employers, 1099s for other income, receipts for deductions, and any other relevant tax documents. Having these organized will make the filing process smoother, and our free tax prep planner will ensure you don’t overlook any required documents.

You can pay online through the IRS website, by phone, or by mail. You can also set up a payment plan if you can't pay the full amount immediately.

Yes, you can still e-file your return after the extension deadline, up until the October 15 deadline. E-filing is generally faster and more secure than paper filing.