Why was my return rejected as a duplicate?
The IRS rejected your return because they already received a filing containing your EIN/SSN for the tax year. If you are unsure about the filing, we recommend contacting your CPA or tax professional who handles your income taxes - they may have already filed an extension form for you this year. If you need to contact the IRS directly about the rejection, please dial the following numbers:
For IRS Form 4868: 1-800-829-1040
For IRS Form 7004: 1-800-829-4933
For IRS Form 8868: 1-877-829-5500