Quick answer: The IRS says either the dependent's SSN or last name does not match the information provided to the IRS by the Social Security Administration. Check every dependent's name and SSN carefully. If the SSA record needs correction, the IRS says to wait about two weeks after the SSA update before e-filing again.

What does IRS reject code R0000-504-02 mean?

R0000-504-02 means the Social Security number and corresponding last name entered for a dependent do not match IRS records.

This is a dependent name/SSN matching rejection. It is different from IND-507-01, which means a dependent's SSN was already used on another accepted return.

What should I check first?

  1. Check the dependent's SSN. Look for missing digits, transposed digits or another typing error.
  2. Check the dependent's last name. Compare it with the Social Security card.
  3. Check every dependent listed. Make sure the name and SSN pair belongs to the correct dependent.
  4. Review any legal name change. The tax return should match the current Social Security record.

What if the dependent's name and SSN look correct?

If the return matches the Social Security card but the rejection continues, the IRS says to contact the Social Security Administration to confirm the dependent's record.

If the SSA updates the dependent's SSN record, the IRS guidance says to wait about two weeks before trying to e-file again.

How do I fix R0000-504-02?

  1. Save the complete rejection message. Confirm the exact code is R0000-504-02.
  2. Identify the dependent involved.
  3. Compare the dependent's SSN with the Social Security card.
  4. Compare the dependent's last name with the Social Security card.
  5. Correct any typing or entry errors.
  6. If the return is correct but SSA records differ, contact the Social Security Administration.
  7. After an SSA update, allow the IRS-recommended waiting period before e-filing again.
  8. Resubmit and review the new acknowledgment.

Can I paper-file instead?

Yes. The IRS page for this rejection says a taxpayer can print and mail the return instead of waiting to e-file again, particularly when necessary to avoid filing late or missing the filing deadline.

If a paper return follows an e-file rejection near the deadline, review the current IRS rejected-return procedures and include any documentation the IRS requires for a timely rejected electronic return.

R0000-504-02 vs. IND-507-01

R0000-504-02 means the dependent's last name/SSN combination does not match IRS records. IND-507-01 means the dependent's SSN was already used on another accepted return for the same tax year.

Common questions about R0000-504-02

Does this mean someone else claimed my dependent?

Not necessarily. This code is about a mismatch between the dependent's last name and SSN in IRS records. A dependent-already-claimed rejection uses a different code.

Can a misspelled dependent name cause this rejection?

Yes. A spelling or surname mismatch can cause the dependent's name and SSN combination to fail IRS validation.

What if the dependent recently changed their last name?

Use the name that matches the current Social Security record. If SSA needs to update the record, complete that correction before e-filing again and follow the IRS waiting guidance.

Can RefundIQ help me understand R0000-504-02?

Yes. Have the tax year and complete reject code ready. Do not send Social Security numbers, banking information or complete tax documents through an ordinary website message.

Read the RefundIQ dependent rejection guide →

Compare with IND-507-01 →

Browse all RefundIQ IRS reject codes →

Official IRS sources

Sources reviewed October 7, 2026. IRS procedures can change; use the guidance that applies when you file.