If you filed the extension through TurboTax, you will be notified when it gets accepted. See more information below from this Article: What to Do After You've Filed an Income Tax Extension
Checking federal tax extension status
If you sent your extension in on time, it should be granted. To confirm receipt, it's easiest if you use software like TurboTax Easy Extension, since you'll get a confirmation from TurboTax within 48 hours.
- If you use the U.S. mail to send your extension, you'll have to contact the Internal Revenue Service (IRS) to ask about extension status.
- Currently, you can't do this on the IRS website. Call the IRS customer service number to determine if your request for an extension was received and approved.
Checking state tax extension status
If your state requires that you file an extension application separate from the federal tax extension application, you'll have to contact the taxing authorities in your state to check on its status. Call the taxpayer service number and ask the service agent whether your papers arrived on time.
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