Form 1040 is the backbone of Part 1. Candidates must know the exact flow of the form: Gross Income -> Deductions to arrive at AGI -> Standard or Itemized Deductions -> Qualified Business Income Deduction (QBID) -> Taxable Income -> Gross Tax -> Nonrefundable Credits -> Other Taxes -> Payments and Refundable Credits -> Refund or Amount Owed.
IRS Form Guide
IRS Form 1040: Individual Income Tax Return Guide for EA Exam
HS
Written By
Hiren Soni, CA
TN
Fact-Checked By
Tom Norton, CPA, EA
Last Updated
July 10, 2026
Tax Law Compliance
IRS SEE 2025/2026 Rules
At a Glance: Quick Summary
Quick Answer:
IRS Form 1040 is the standard federal income tax form used by individual taxpayers to report their annual gross income, claim deductions and credits, and calculate their tax liability or refund.
Tax Definition:
Form 1040 consists of multiple schedules (Schedule 1 for additional income/adjustments, Schedule 2 for additional taxes, Schedule 3 for additional credits) that roll up to determine the final tax results for individuals.
Key Takeaways:
- Filing Date: Normally April 15th of the following calendar year (unless extended to October 15th via Form 4868).
- Filing Statuses: Single, Married Filing Jointly, Married Filing Separately, Head of Household, Qualifying Surviving Spouse.
- Adjusted Gross Income (AGI): The line item that governs eligibility thresholds for deductions, credits, and phaseouts.
- Schedules A-F: Detail itemized deductions, interest/dividends, business profit/loss, capital transactions, supplemental income, and farming.
Key Statistics & Parameters
2 Pages (plus Schedules)
Pages
Part 1 (Individuals)
SEE Part Tested
6 Months (via Form 4868)
Filing Extension
Generally 3 years from filing date
Statute of Limitations
Tax Limits & Comparison
| Form 1040 Section | Description | Key Associated Schedule |
|---|---|---|
| Lines 1-8 | Gross Income (Wages, Interest, Dividends) | Form 1040 / Schedule 1 |
| Line 11 | Adjusted Gross Income (AGI) | Form 1040 / Schedule 1 |
| Line 12 | Standard or Itemized Deduction | Schedule A |
| Line 15 | Taxable Income | Form 1040 |
| Lines 25-33 | Payments (Withholding, Estimated Tax, Credits) | Schedule 3 |
Frequently Asked Questions
Schedule 1 is used to report additional income (such as business income, capital gains, rental income, unemployment) and adjustments to income (like student loan interest, self-employed health insurance).
No. Form 4868 grants a 6-month extension of time to file the tax return, but all taxes due must be paid by the original April deadline to avoid interest and failure-to-pay penalties.
Official IRS References & Citations
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