Resolving IRS e-file Error code R0000-679-01: Here’s How to Fix It

Error code: R0000-679-01 
PrimaryPriorYearPIN’ or ‘PrimaryPriorYearAGIAmt’ in the Return Header must match the e-File database. 

User Message 
‘Primary taxpayer’s prior year PIN or AGI amount does not match with the IRS records. Please correct the information and retransmit your return. 

When you e-file Form 4868, IRS Error Code R0000-679-01 may appear if the IRS cannot verify the primary taxpayer’s identity due to incorrect prior-year AGI or PIN. This is a common validation error that can be resolved by reviewing and correcting the prior-year information before re-submitting the return. 

What is IRS Error Code R0000-679-01? 

IRS Error Code R0000-679-01 occurs when the primary taxpayer’s prior-year AGI or self-selected PIN does not match IRS records. The IRS uses this information to verify the taxpayer’s identity, and any discrepancy will prevent the irs Form 4868 from being accepted. 

Why did you get this when E-filing Form 4868? 

• The IRS only permits one valid Form 4868 per taxpayer and tax year. 
• If the prior-year AGI or PIN entered for the primary taxpayer does not exactly match IRS records, the extension request will be rejected. 

Common Reasons Include: 

• An incorrect prior-year AGI was entered for the primary taxpayer. 
• An incorrect self-select PIN was used. 
• The IRS has a different prior-year return on record (amended, late-filed, or still processing). 

If you are unsure which prior-year information the IRS has on file, you may contact the IRS directly for clarification by calling 1-800-829-1040, available Monday through Friday, 7:00 AM to 7:00 PM (local time). 

How to resolve the Error Code R0000-679-01 

Step 1: Verify Primary Taxpayer Information 

• Review the primary taxpayer’s prior-year tax return. 
• Confirm that the prior-year AGI entered matches IRS records. 
• Verify that the prior-year PIN or self-select PIN is correct. 

Even minor differences, extra spaces, or formatting errors can trigger this error. 

Step 2: Correct the Information 

• Update any incorrect AGI or PIN in Form 4868. 
• Make sure the AGI or PIN matches exactly what the IRS has on file. 

Step 3: Verify Filing Details 

If the extension continues to be rejected: 

• Confirm the tax year selected. 
• Ensure that the Filing Status is correct (Single, Married Filing Jointly, etc.). 
• Verify the primary taxpayer’s SSN is correct. 

Important: If the taxpayer did not file a prior-year return, enter 0 for the AGI. 

How to Review this error in TaxZerone 

Step 1: Login & Identify the Error 

• Log in to your TaxZerone account. 
• Locate the rejected return on the Extension Forms Dashboard and click “View Errors.” 
• Identify Error Code R0000-679-01 and click “Fix Error.” 

Step 2: Verify Primary Taxpayer Identity Information 

• Check the primary taxpayer’s information exactly as it appears on IRS records. 
• Confirm the prior-year AGI and self-selected PIN are correct. 
• If any information is incorrect, update it and click “Save & Continue.” 

Step 3: Update and Re-submit 

• Ensure all prior-year information for the primary taxpayer is accurate. 
• Click “Save & Continue” to apply the changes. 
• Re-submit the return only after confirming the updated information matches IRS records. 

How to Avoid Errors While Filing 

• Always refer to the primary taxpayer’s prior-year tax return when entering AGI or PIN details. 
• Double-check all identity verification fields before e-filing. 
• Keep copies of prior-year IRS returns and acknowledgment confirmations for reference. 

IRS Error Code R0000-679-01 indicates that the primary taxpayer’s prior-year AGI or self-selected PIN entered on the return does not match IRS records. 

The return cannot be accepted until the correct prior-year information is provided. Always verify the primary taxpayer’s AGI or PIN before resubmitting to ensure a smooth IRS e-filing experience.