Quick answer: R0000-504-02 means the dependent's last name and Social Security number do not match IRS records. Check the SSN and last name exactly as shown on the Social Security record. If SSA makes a correction, the IRS says to wait about 2 weeks before trying to e-file again.
What does R0000-504-02 mean?
The IRS says R0000-504-02 occurs when the Social Security number entered for a dependent does not match the dependent's last name in IRS records.
The Social Security Administration provides the underlying name-and-SSN information to the IRS.
Read the full R0000-504-02 guide →
What should I check first?
- Compare the dependent's SSN with the Social Security card.
- Check the dependent's last name spelling.
- Check for hyphens, spaces, suffixes or recent legal name changes.
- Make sure the correct dependent's SSN was entered in the correct row.
What if the name on the tax return is different from the Social Security card?
Use the name that matches the Social Security record. The IRS says names and SSNs should agree with the Social Security card to avoid processing and refund delays.
What if the dependent recently changed their name?
If the legal name changed but the Social Security record has not yet been updated, contact the Social Security Administration. The tax return should match the current SSA record.
What if the SSN and name both look correct?
The IRS says to contact the Social Security Administration if the information on the return appears correct but still does not match IRS records.
You can call SSA at 800-772-1213 to verify the dependent's Social Security record.
How long should I wait after SSA corrects the record?
The IRS specifically says to wait about 2 weeks after SSA updates the dependent's SSN record before attempting to e-file again.
Can I mail the return instead of waiting?
Yes. The IRS says you may print and mail the return instead of waiting for the SSA update to flow through, especially if waiting could cause you to miss the filing deadline.
If a rejected electronic return must be paper-filed near the deadline, follow the IRS rejected-return timing and documentation instructions.
Is this the same as someone already claiming my dependent?
No. A name/SSN mismatch and a duplicate dependent are different problems.
- R0000-504-02: the dependent's name and SSN do not match IRS/SSA records.
- IND-507-01: the dependent's SSN was already used on another accepted return.
Read: Someone Already Claimed My Dependent →
What if the dependent's SSN was already used too?
If the rejection says the SSN was already used, first confirm the number is correct and then follow the duplicate-dependent rules. For recent tax years, the IRS may allow e-filing with a valid current-year IP PIN for the primary taxpayer.
Dependent information looks right but the IRS still rejects it?
RefundIQ can review the mismatch, determine whether the issue is with the return entry, SSA record or another dependent-related rejection, prepare or correct the return, and help retransmit it.
Have RefundIQ Handle It — Call 844-754-1040Step-by-step before resubmitting
- Save the exact rejection message.
- Confirm the dependent's name and SSN against the Social Security card.
- Correct any typing or spelling error.
- If the return looks correct, contact SSA.
- If SSA updates the record, wait about two weeks before e-filing again.
- If necessary, use the IRS paper-filing option to avoid filing late.
- Check the new acknowledgment after retransmission.
Common questions
Can a simple misspelling cause this rejection?
Yes. The IRS says either the SSN or last name can be the source of the mismatch.
Does this mean someone stole my child's identity?
Not necessarily. This code is primarily a name/SSN matching problem. Identity theft is more likely to be considered when the correct SSN was already used on another return or when there is suspicious activity.
Can RefundIQ fix the dependent mismatch and prepare the return?
Yes. RefundIQ can review the reject code and dependent information, prepare or correct the return, and help retransmit it for IRS acceptance.
Go to the RefundIQ Dependent Rejection Help Center →
Official IRS sources
Sources reviewed October 7, 2026. IRS and SSA records can change after corrections; use the guidance that applies to the tax year being filed.