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Study Guide: Tax Accounting: Tax Compliance - Filing Deadlines, April 15, Extensions, 6 Months, Estimated Tax Payments
Source: https://www.fatskills.com/accounting/chapter/tax-accounting-tax-compliance-filing-deadlines-april-15-extensions-6-months-estimated-tax-payments

Tax Accounting: Tax Compliance - Filing Deadlines, April 15, Extensions, 6 Months, Estimated Tax Payments

By Fatskills Exam Guides Team — the exam nerds behind 28,500+ quizzes and 2.1M practice questions across 500+ global exams.

⏱️ ~3 min read

? What this actually is

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.

? The core logic (or formula)

  1. Filing Deadline:
  2. April 15: The deadline for filing individual tax returns (Form 1040).
  3. October 15: The extended deadline if a 6-month extension is filed.

  4. Extensions:

  5. Form 4868: Used to request an automatic 6-month extension to file.
  6. Payment Due: Any tax owed is still due by April 15, even with an extension.

  7. Estimated Tax Payments:

  8. Form 1040-ES: Used to calculate and pay estimated taxes.
  9. Due Dates: April 15, June 15, September 15, and January 15 of the following year.
  10. Safe Harbor Rule: Pay 100% of the prior year's tax or 90% of the current year's tax to avoid penalties.

? Hidden rule nobody explains

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.

? Practical example / breakdown

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.

  1. Extension Request:
  2. John files Form 4868 by April 15, requesting an extension to file until October 15.
  3. He pays $4,000 of the estimated $5,000 tax due.

  4. Estimated Tax Payments:

  5. John makes quarterly estimated tax payments:

    • April 15: $1,000
    • June 15: $1,000
    • September 15: $1,000
    • January 15 (next year): $1,000
  6. Filing the Return:

  7. John files his tax return by October 15 and pays the remaining $1,000 tax due.

? Your move today

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.

? Quick reference asset

Extension Request (Form 4868)

Field Example
Name John Doe
Address 123 Main St, Anytown, USA
Estimated Tax Due $5,000
Amount Paid $4,000
Balance Due $1,000

Estimated Tax Payments (Form 1040-ES)

Due Date Amount Paid
April 15 $1,000
June 15 $1,000
September 15 $1,000
January 15 $1,000

Common mistakes & recovery

  • Common Error 1: Assuming an extension to file also extends the payment deadline.
  • Recovery: Always pay the estimated tax due by April 15.
  • Common Error 2: Missing estimated tax payment deadlines.
  • Recovery: Set reminders for each quarterly due date.
  • Quick Check: Verify that all estimated tax payments are made on time and that any remaining tax due is paid by the filing deadline.
  • Exam Tip: Memorize the due dates for extensions and estimated tax payments to save time during the exam.

? Completion check

"I can accurately file for a tax extension, make estimated tax payments, and understand the deadlines and penalties involved."