Study guide
30.4 Form 8879 (Signature Authorization)
Enrolled Agent EA
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1 Part 1, Chapter 1: Tax Return Basics & Filing Requirements
1.1 Form 1040 Overview & Structure 1.2 Form 1040-SR for Seniors 1.3 Who Must File (Income Thresholds) 1.4 Filing Deadlines & Extensions (Form 4868) 1.5 Penalties: Failure to File vs. Failure to Pay 1.6 Sources of Tax Information (W-2s, 1099s, K-1s) 1.7 Preparer Due Diligence Requirements 1.8 Amended Returns (Form 1040-X)
2 Part 1, Chapter 2: Filing Status & Dependents
2.1 Single & Married Filing Jointly 2.2 Married Filing Separately 2.3 Head of Household Requirements 2.4 Qualifying Surviving Spouse 2.5 Qualifying Child Test (5 Tests) 2.6 Qualifying Relative Test (4 Tests) 2.7 SSN, ITIN & Residency Status
3 Part 1, Chapter 3: Wages & Employee Compensation
3.1 W-2 Income & Withholding 3.2 Employee vs. Independent Contractor 3.3 1099-NEC, 1099-MISC & 1099-K Reporting 3.4 Fringe Benefits (Taxable vs. Non-Taxable) 3.5 Stock Options (ISO vs. NQSO) 3.6 Special Categories (Clergy, Military, Foreign)
4 Part 1, Chapter 4: Interest, Dividends & Other Income
4.1 Taxable vs. Tax-Exempt Interest 4.2 US Savings Bonds & OID 4.3 Ordinary vs. Qualified Dividends 4.4 Schedule B Requirements 4.5 Rental & Royalty Income Basics 4.6 Alimony, Gambling & Other Income 4.7 Cancelled Debt & Form 1099-C 4.8 Net Operating Loss (NOL)
5 Part 1, Chapter 5: Capital Gains & Property Transactions
5.1 Capital vs. Non-Capital Assets 5.2 Cost Basis Calculation 5.3 Inherited & Gifted Property Basis 5.4 Short-Term vs. Long-Term Gains 5.5 Capital Gains Tax Rates (0%, 15%, 20%) 5.6 Netting & the $3,000 Loss Limit 5.7 Wash Sales & Related Party Rules 5.8 Sale of Primary Residence (Section 121) 5.9 Installment Sales (Form 6252) 5.10 Like-Kind Exchanges (Section 1031)
6 Part 1, Chapter 6: Adjustments to Income
6.1 Educator Expenses & HSA Contributions 6.2 Self-Employment Tax Deduction 6.3 IRA Contributions (Traditional) 6.4 Student Loan Interest Deduction 6.5 Alimony Paid (Pre-2019 Divorces) 6.6 Other Adjustments & New OBBBA Deductions (Tips, Overtime, Auto Loan, Senior Bonus)
7 Part 1, Chapter 7: Deductions (Standard & Itemized)
7.1 Standard Deduction by Filing Status 7.2 Medical & Dental Expenses (7.5% Floor) 7.3 State & Local Taxes (SALT $40K Cap) 7.4 Mortgage Interest Deduction 7.5 Charitable Contributions 7.6 Casualty & Theft Losses 7.7 QBI Deduction (Section 199A)
8 Part 1, Chapter 8: Tax Calculation & Credits
8.1 Tax Tables & Rate Schedules 8.2 Alternative Minimum Tax (AMT) 8.3 Self-Employment Tax Calculation 8.4 Child Tax Credit & Additional CTC 8.5 Earned Income Tax Credit (EITC) 8.6 Education Credits (AOC & LLC) 8.7 Child & Dependent Care Credit 8.8 Other Credits (Saver's, Premium Tax)
9 Part 1, Chapter 9: Retirement Accounts & Social Security
9.1 Traditional vs. Roth IRA 9.2 401(k), 403(b) & TSP Basics 9.3 SEP-IRA & SIMPLE IRA 9.4 Required Minimum Distributions (RMDs) 9.5 Early Withdrawal Penalties & Exceptions 9.6 Social Security Taxation
10 Part 1, Chapter 10: Specialized Individual Returns
10.1 Estate Tax (Form 706) 10.2 Gift Tax (Form 709) 10.3 Foreign Income (Form 2555) 10.4 FBAR & FATCA Reporting 10.5 Farm Income (Schedule F) 10.6 Disaster Area Rules
11 Part 2, Chapter 11: Business Entity Types
11.1 Overview of Entity Types 11.2 State Law vs. Tax Classification 11.3 Entity Selection: Reasonable Comp & QBI 11.4 Form 8832 & Rev. Proc. 2009-41 11.5 LLC Deep Dive: Spouses & EINs 11.6 Changing Status: The 60-Month Rule
12 Part 2, Chapter 12: Starting a Business
12.1 Hobby vs. Business (Profit Motive) 12.2 Employer Identification Number (EIN) 12.3 Tax Year Selection 12.4 Recordkeeping Requirements 12.5 Statute of Limitations 12.6 Related Party Transactions 12.7 Start-Up Costs, Entity Choice & OBBBA Business Changes (2025)
13 Part 2, Chapter 13: Worker Classification & Payroll
13.1 Employee vs. Independent Contractor 13.2 Common Law Test (Behavioral, Financial, Relationship) 13.3 Statutory Employees & Non-Employees 13.4 Form 941 & Payroll Deposits 13.5 Trust Fund Recovery Penalty 13.6 FUTA & Unemployment Taxes
14 Part 2, Chapter 14: Accounting Methods & Income
14.1 Cash vs. Accrual Method 14.2 Hybrid Methods & Changes 14.3 Inventory & COGS 14.4 Gross Receipts & Income Recognition 14.5 Constructive Receipt 14.6 Form 1099 Reporting Requirements 14.7 §163(j) Business Interest Expense Limitation 14.8 §174 Research & Experimental Expenditures
15 Part 2, Chapter 15: Depreciation & Asset Treatment
15.1 MACRS Basics & Recovery Periods 15.2 Mid-Month, Mid-Quarter, Half-Year Conventions 15.3 Section 179 Expense Deduction 15.4 Bonus Depreciation 15.5 Listed Property Rules 15.6 Amortization of Intangibles 15.7 Depletion 15.8 Disposition of Business Assets
16 Part 2, Chapter 16: Business Deductions
16.1 Ordinary & Necessary Test 16.2 Business Travel Expenses 16.3 Business Meals (50% Limitation) 16.4 Business Use of Vehicle 16.5 Home Office Deduction 16.6 Business Interest Limitation (163(j)) 16.7 Business Bad Debts
17 Part 2, Chapter 17: Business Credits & Fringe Benefits
17.1 General Business Credit Overview 17.2 R&D Credit & Disabled Access Credit 17.3 Small Employer Health Insurance Credit 17.4 Fringe Benefit Rules 17.5 Cafeteria Plans (Section 125) 17.6 Achievement Awards & Other Benefits
18 Part 2, Chapter 18: Sole Proprietorships
18.1 Schedule C Overview 18.2 Calculating Net Profit/Loss 18.3 Self-Employment Tax (Schedule SE) 18.4 Estimated Tax Payments 18.5 Hobby Loss Rules
19 Part 2, Chapter 19: Partnerships
19.1 Partnership Formation 19.2 Partner's Basis Calculation 19.3 Form 1065 Overview 19.4 Schedule K-1 (Partner's Share) 19.5 Guaranteed Payments 19.6 Partnership Distributions 19.7 At-Risk & Passive Activity Rules 19.8 Partnership Termination & Liquidation
20 Part 2, Chapter 20: C Corporations
20.1 Form 1120 Overview 20.2 Corporate Tax Rate (21%) & CAMT 20.3 Accumulated Earnings Tax 20.4 Dividends Received Deduction 20.5 Earnings & Profits (E&P) 20.6 Corporate Distributions, Dividends & Stock Redemptions 20.7 §351 Transfers, §1032, §1202 QSBS & Other Corporate Provisions 20.8 Corporate Liquidation
21 Part 2, Chapter 21: S Corporations
21.1 S Election Requirements (Form 2553) 21.2 Form 1120-S Overview 21.3 Shareholder Basis Calculation 21.4 Reasonable Compensation 21.5 S Corporation Distributions 21.6 Built-In Gains Tax & Termination
22 Part 2, Chapter 22: Specialized Business Returns
22.1 Trusts & Estates (Form 1041) 22.2 Simple vs. Complex Trusts 22.3 Distributable Net Income (DNI) 22.4 Tax-Exempt Organizations (Form 990) 22.5 Retirement Plans (Form 5500) 22.6 Qualified Retirement Plans Overview 22.7 Farm Taxation 22.8 Rental Real Estate Activities
23 Part 3, Chapter 23: Practice Before the IRS
23.1 What is Practice Before the IRS? 23.2 Who Can Practice (Full Rights) 23.3 Limited Practice Rights (AFSP, Unenrolled) 23.4 Special Relationships (Family, Employees) 23.5 PTIN Requirements 23.6 Circular 230 Overview 23.7 Office of Professional Responsibility (OPR)
24 Part 3, Chapter 24: Becoming & Maintaining EA Status
24.1 Two Paths to EA (Exam vs. IRS Experience) 24.2 Application Process (Form 23) 24.3 Background & Compliance Checks 24.4 Renewal Requirements (Form 8554) 24.5 Continuing Education Requirements 24.6 Inactive Status & Termination
25 Part 3, Chapter 25: Practitioner Duties (Circular 230)
25.1 Due Diligence Requirements 25.2 Knowledge of Client's Omission 25.3 Conflict of Interest Rules 25.4 Fee Requirements (Contingent, Unconscionable) 25.5 Advertising & Solicitation Rules 25.6 Tax Return Position Standards 25.7 Written Advice Standards 25.8 Sanctions & Penalties for Violations
26 Part 3, Chapter 26: Power of Attorney & Authorization
26.1 Form 2848 (Power of Attorney) 26.2 CAF (Centralized Authorization File) 26.3 Form 8821 (Tax Information Authorization) 26.4 Third-Party Designee 26.5 Signing Returns for Taxpayers 26.6 Client Confidentiality & Privilege 26.7 Representing Clients in Audits (Examination) 26.8 Appealing IRS Decisions 26.9 Collection Representation
27 Part 3, Chapter 27: Legal Authority & Research
27.1 Hierarchy of Tax Authority 27.2 Internal Revenue Code 27.3 Treasury Regulations 27.4 Revenue Rulings & Procedures 27.5 Court Cases & Precedent 27.6 Statutes of Limitations
28 Part 3, Chapter 28: Specific Representation Issues
28.1 Trust Fund Recovery Penalty (TFRP) 28.2 Innocent Spouse Relief (Form 8857) 28.3 Injured Spouse Allocation (Form 8379) 28.4 Penalty Abatement (FTA & Reasonable Cause) 28.5 Taxpayer Advocate Service (TAS) 28.6 Freedom of Information Act (FOIA)
29 Part 3, Chapter 29: Final Review & Exam Strategy
29.1 Exam Structure & Logistics (2026-2027) 29.2 The "Clock" of Representation (Master Deadlines) 29.3 Ethics vs. Law (Sanctions & Penalties) 29.4 Final Mock Review & Exam Strategy
30 Part 3, Chapter 30: Filing Process & E-File
30.1 E-File Requirements (The "More Than 10 Returns" Rule) 30.2 ERO Responsibilities 30.3 EFIN & Application Process 30.4 Form 8879 (Signature Authorization) 30.5 Record Retention & Data Security (WISP) 30.6 Preparer Penalties (Filing Specific)
30.4 Form 8879 (Signature Authorization)
Key Takeaways Explain This Topic AI
Form 8879 authorizes the ERO to sign/submit the return electronically.
The taxpayer acts as if they are signing the 1040.
Timing: Must be signed BEFORE transmission.
Material changes (>$50 refund or >$14 withholding) require a NEW Form 8879.
Retention: ERO must keep Form 8879 for 3 years from the return due date.
Last updated: October 2026
- Form 8879: The Electronic Handshake
- Why This Matters for the Exam
Form 8879 matters on Part 3 because it involves strict timing rules (before transmission), retention requirements (3 years), and material change thresholds ($50/$14). The IRS treats Form 8879 as the legal equivalent of the taxpayer's signature on a paper 1040, so violations carry serious consequences.
Expect scenario-based questions that test your understanding of when a new form is required and what happens if the ERO transmits without a signed form.
What Is Form 8879?
Form 8879 (IRS e-file Signature Authorization) - The form taxpayers sign to authorize the ERO to electronically sign and transmit their tax return. This form replaces the physical signature that would appear on a paper Form 1040.
Key Concept: When you e-file, the taxpayer doesn't actually sign the 1040 itself. Instead, they sign Form 8879, which gives the ERO permission to apply an electronic signature on their behalf.
- The Three Critical Rules for Form 8879
- Rule #1: Signature BEFORE Transmission
The ERO cannot transmit a return to the IRS until they have a signed Form 8879 in hand (physical or digital).
Acceptable Signature Methods:
Wet Signature: Taxpayer signs a physical copy of Form 8879 in ink.
Electronic Signature: Taxpayer signs using an IRS-approved e-signature platform (must meet security standards).
Faxed Signature: A faxed copy of a signed Form 8879 is acceptable (as long as the original is retained).
Unacceptable Signature Methods:
Verbal Authorization: "Yes, you can file my return" over the phone is NOT sufficient.
Email Without Signature: An email saying "go ahead and file" without a signed 8879 attached is NOT sufficient.
Pre-Signed Blank Forms: Having clients sign blank forms "for future use" is prohibited.
Exam Trap: Students often think verbal approval is enough. It's not. The form must be signed.
Rule #2: No Alterations Without a New Signature
If the return changes materially after the taxpayer signs Form 8879, a new form must be signed.
Material Changes (Require New Form):
Tax Due/Refund Changes > $50: If the refund increases from $1,000 to $1,100, a new form is required.
Withholding Changes > $14: If you discover an additional W-2 that adds $20 of withholding, a new form is required.
Changes to Personal Information: If you correct the taxpayer's SSN or address after signing, a new form is required.
Immaterial Changes (No New Form Required):
Tax Due/Refund Changes ≤ $50: Correcting a $30 error doesn't trigger a new form.
Withholding Changes ≤ $14: Adding $10 of withholding doesn't trigger a new form.
Math or calculation errors that don't change the refund/tax due by more than $50.
Rule #3: Retention for 3 Years
The ERO must retain the signed Form 8879 for 3 years from the later of :
The return due date (e.g., April 15, 2025 for a 2024 return).
The actual filing date (if filed late).
Example:
2025 return filed on April 15, 2026 → Retain until April 15, 2029.
2025 return filed on October 15, 2026 (on extension) → Retain until October 15, 2029.
Form 8879 Rules Summary
- Rule Requirement Consequence of Violation
- Signature Timing Before transmission Cannot file; IRS system rejects return
- Material Changes New form if >$50 or >$14 Return is invalid; ERO liability
- Retention 3 years from due/file date IRC §6695 penalty ($60 per failure)
- On the Exam
Question types to practice on Form 8879:
- Timing Questions: "Can an ERO transmit a return before receiving Form 8879?"
- Material Change Questions: "The refund increases by $60 after the client signs 8879. What must the ERO do?"
- Retention Questions: "How long must an ERO keep Form 8879?"
The key is to remember: Sign BEFORE transmission, new form if >$50 or >$14, retain for 3 years.