If you filed for an extension, the IRS wants you to know: you can still e-file. IRS Free File options remain available to eligible taxpayers through the extended filing deadline, offering a faster and more accurate alternative to paper returns.
E-filing on extension carries the same benefits as e-filing in April — faster processing, quicker refunds via direct deposit, and built-in error checks that catch common mistakes before submission.
Don't confuse the extension to file with an extension to pay: any tax owed was still due by the April deadline, and interest continues to accrue on unpaid balances regardless of the filing extension.
File electronically as soon as your documents are ready rather than waiting until the October deadline — it reduces the window for penalties and gets any refund moving sooner.