First, verify that you, in fact, have the wrong Social Security Number (SSN) on your tax return for 2018.
- If you e-file your tax return online, you'll get a rejection error code almost immediately.
- If you mail in your tax return, you'll generally get a letter in the mail from the IRS with your rejection code number. If you accidentally typed in the wrong SSN for your return, the error code you'll get is 0500, meaning your tax information doesn't match the data the IRS has on file from the Social Security Administration (SSA). To contact the SSA call 1 (800) 772-1213.
If your SSN is incorrect but you didn't get any letter from the IRS, contact the IRS to see what's going on with your 2018 tax return. You could also check your IRS transcript to see what they have as your SSN and related tax documents.
The IRS telephone number is 1-800-829-1040. Expect long wait times since it is tax season.
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