By Fatskills Exam Guides Team — the exam nerds behind 28,500+ quizzes and 2.1M practice questions across 500+ global exams.
Filing deadlines, extensions, and estimated tax payments are critical components of tax compliance. The April 15 deadline is when individual tax returns are due, extensions allow for an additional 6 months to file (but not to pay), and estimated tax payments are quarterly payments made by individuals who expect to owe tax of $1,000 or more when their return is filed. Understanding these concepts matters because they directly impact tax planning, cash flow management, and compliance with IRS regulations.
October 15: The extended deadline if a 6-month extension is filed.
Extensions:
Payment Due: Any tax owed is still due by April 15, even with an extension.
Estimated Tax Payments:
In practice, many taxpayers misunderstand that an extension to file does not extend the time to pay. Any tax due must still be paid by April 15 to avoid penalties and interest. This is a common trap for new taxpayers and even some seasoned ones.
Scenario: John expects to owe $5,000 in taxes for the year. He files for an extension using Form 4868 and pays $4,000 by April 15.
He pays $4,000 of the estimated $5,000 tax due.
John makes quarterly estimated tax payments:
Filing the Return:
Goal: Practice filing an extension and making estimated tax payments.
Step-by-step:1. Download Form 4868 from the IRS website.2. Fill out the form with hypothetical information (e.g., name, address, estimated tax due).3. Calculate quarterly estimated tax payments using Form 1040-ES.4. Note the due dates for each payment.
What to save: A completed Form 4868 and a schedule of estimated tax payments.
"I can accurately file for a tax extension, make estimated tax payments, and understand the deadlines and penalties involved."
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