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What happens if I estimate incorrectly?

Personal Tax Extension Filing Service

The IRS's general guidance is to make your estimate as accurate as you can with the information that you have. If the IRS later determines that your estimate is not reasonable in their opinion, they may declare your extension to be null and void, which could result in additional interest and/or penalties. Therefore, take care to ensure that your estimate would be judged by the IRS to be fair, sensible, and in good faith.

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How long does it take to get a personal tax extension? If your order is placed by 9pm central time on April 18, we will e-file your extension application by midnight central time. Our business hours are Monday-Friday, 9am-5pm Central Time, excluding ...
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What is the due date for filing a personal federal tax return? The regular due date for most individuals for a 2017 federal tax return is April 18, 2018. However this filing deadline can be extended to October 15, 2018...
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How do I estimate my total personal federal taxes? This is also called your "total tax liability". It is the total amount of taxes that you owe the IRS for 2017, whether you have paid any of it yet or not. For example, if you estimate that you will ...
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How do I make a personal tax extension payment to the IRS? To make an extension payment to the IRS by credit or debit card after e-filing your extension through our website, go here and select one of the service providers in the first table. Note that paying...
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